Interface Property


  • public interface Property
    List of all properties understood by the system. It also has some other static fields.

    This class exists for two reasons

    1. To act as the internal documentation for the properties.
    2. To remove the need to declare a java static field for the property name in the protocol/implementation class. This reduces the footprint as the string is final and thus can be included simply as a String constant pool entry.

    This class should not be shipped with the product.

    This class has no methods, all it contains are String's which by are public, static and final since they are declared in an interface.

    • Field Detail

      • PROPERTIES_FILE

        static final java.lang.String PROPERTIES_FILE
        Name of the file that contains system wide properties. Has to be located in ${derby.system.home} if set, otherwise ${user.dir}
        See Also:
        Constant Field Values
      • PROPERTY_RUNTIME_PREFIX

        static final java.lang.String PROPERTY_RUNTIME_PREFIX
        By convention properties that must not be stored any persistent form of service properties start with this prefix. These properties are not documented.
        See Also:
        Constant Field Values
      • LOG_SEVERITY_LEVEL

        static final java.lang.String LOG_SEVERITY_LEVEL
        derby.stream.error.logSeverityLevel=integerValue
        Indicates the minimum level of severity for errors that are reported to the error stream. Default to 0 in a "sane" server, and SESSION_SEVERITY in the insane (and product) server.
        See Also:
        ExceptionSeverity.SESSION_SEVERITY, Constant Field Values
      • EXT_DIAG_SEVERITY_LEVEL

        static final java.lang.String EXT_DIAG_SEVERITY_LEVEL
        derby.stream.error.ExtendedDiagSeverityLevel=integerValue
        Indicates the minimum level of severity for errors that are reported thread dump information and diagnosis information depends on jvm vender. Default to SESSION_SEVERITY(40000).
        See Also:
        Constant Field Values
      • LOG_BOOT_TRACE

        static final java.lang.String LOG_BOOT_TRACE
        derby.stream.error.logBootTrace
        defaults to false. If set to true logs a stack trace to the error stream on successful boot or shutdown. This can be useful when trying to debug dual boot scenarios especially with multiple class loaders.
        See Also:
        Constant Field Values
      • ERRORLOG_STYLE_PROPERTY

        static final java.lang.String ERRORLOG_STYLE_PROPERTY
        derby.stream.error.style=The error stream error style. rollingFile is the only file currently supported. Takes precendence over derby.stream.error.file. Takes precendence over derby.stream.error.method. Takes precendence over derby.stream.error.field
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        Constant Field Values
      • ERRORLOG_FILE_PROPERTY

        static final java.lang.String ERRORLOG_FILE_PROPERTY
        derby.stream.error.file=absolute or relative error log filename Takes precendence over derby.stream.error.method. Takes precendence over derby.stream.error.field
        See Also:
        Constant Field Values
      • ERRORLOG_METHOD_PROPERTY

        static final java.lang.String ERRORLOG_METHOD_PROPERTY
        derby.stream.error.method= . returning an OutputStream or Writer object Takes precendence over derby.stream.error.field
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      • ERRORLOG_FIELD_PROPERTY

        static final java.lang.String ERRORLOG_FIELD_PROPERTY
        derby.stream.error.field= className.fieldName returning an OutputStream or Writer object
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      • ERRORLOG_ROLLINGFILE_PATTERN_PROPERTY

        static final java.lang.String ERRORLOG_ROLLINGFILE_PATTERN_PROPERTY
        derby.stream.error.rollingfile.pattern=the pattern A pattern consists of a string that includes the following special components that will be replaced at runtime:
        • "/" the local pathname separator
        • "%t" the system temporary directory
        • "%h" the value of the "user.home" system property
        • "%d" the value of the "derby.system.home" system property
        • "%g" the generation number to distinguish rotated logs
        • "%u" a unique number to resolve conflicts
        • "%%" translates to a single percent sign "%"
        If no "%g" field has been specified and the file count is greater than one, then the generation number will be added to the end of the generated filename, after a dot.

        Thus for example a pattern of "%t/java%g.log" with a count of 2 would typically cause files to be written on Solaris to /var/tmp/java0.log and /var/tmp/java1.log whereas on Windows 95 they would be typically written to C:\TEMP\java0.log and C:\TEMP\java1.log

        Generation numbers follow the sequence 0, 1, 2, etc.

        Normally the "%u" unique field is set to 0. However, if the FileHandler tries to open the filename and finds the file is currently in use by another process it will increment the unique number field and try again. This will be repeated until FileHandler finds a file name that is not currently in use. If there is a conflict and no "%u" field has been specified, it will be added at the end of the filename after a dot. (This will be after any automatically added generation number.)

        Thus if three processes were all trying to output to fred%u.%g.txt then they might end up using fred0.0.txt, fred1.0.txt, fred2.0.txt as the first file in their rotating sequences.

        Note that the use of unique ids to avoid conflicts is only guaranteed to work reliably when using a local disk file system.

        The default pattern is "%d/derby-%g.log"

        See Also:
        Constant Field Values
      • ERRORLOG_ROLLINGFILE_LIMIT_PROPERTY

        static final java.lang.String ERRORLOG_ROLLINGFILE_LIMIT_PROPERTY
        derby.stream.error.rollingfile.limit=the rolling file size limit

        The default limit is 1024000

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        Constant Field Values
      • ERRORLOG_ROLLINGFILE_COUNT_PROPERTY

        static final java.lang.String ERRORLOG_ROLLINGFILE_COUNT_PROPERTY
        derby.stream.error.rollingfile.count=the rolling file count

        The default count is 10

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        Constant Field Values
      • LOG_FILE_APPEND

        static final java.lang.String LOG_FILE_APPEND
        derby.infolog.append={true,false}
        If the info stream goes to a file and the file already exist, it can either delete the existing file or append to it. User can specifiy whether info log file should append or not by setting derby.infolog.append={true/false} The default behavior is that the exiting file will be deleted when a new info stream is started.
        See Also:
        Constant Field Values
      • SYSTEM_HOME_PROPERTY

        static final java.lang.String SYSTEM_HOME_PROPERTY
        derby.system.home
        Property name for the home directory. Any relative path in the system should be accessed though this property
        See Also:
        Constant Field Values
      • BOOT_ALL

        static final java.lang.String BOOT_ALL
        derby.system.bootAll
        Automatically boot any services at start up time. When set to true this services will be booted at startup, otherwise services will be booted on demand.
        See Also:
        Constant Field Values
      • NO_AUTO_BOOT

        static final java.lang.String NO_AUTO_BOOT
        derby.database.noAutoBoot
        Don't automatically boot this service at start up time. When set to true this service will only be booted on demand, otherwise the service will be booted at startup time if possible.
        See Also:
        Constant Field Values
      • DELETE_ON_CREATE

        static final java.lang.String DELETE_ON_CREATE
        derby.__deleteOnCreate
        Before creating this service delete any remenants (e.g. the directory) of a previous service at the same location.

        INTERNAL USE ONLY

        See Also:
        Constant Field Values
      • FORCE_DATABASE_LOCK

        static final java.lang.String FORCE_DATABASE_LOCK
        derby.database.forceDatabaseLock
        Derby attempts to prevent two instances of Derby from booting the same database with the use of a file called db.lck inside the database directory. On some platforms, Derby can successfully prevent a second instance of Derby from booting the database, and thus prevents corruption. If this is the case, you will see an SQLException like the following: ERROR XJ040: Failed to start database 'toursDB', see the next exception for details. ERROR XSDB6: Another instance of Derby may have already booted the database C:\databases\toursDB. The error is also written to the information log. On other platforms, Derby issues a warning message if an instance of Derby attempts to boot a database that may already have a running instance of Derby attached to it. However, it does not prevent the second instance from booting, and thus potentially corrupting, the database. If a warning message has been issued, corruption may already have occurred. The warning message looks like this: WARNING: Derby (instance 80000000-00d2-3265-de92-000a0a0a0200) is attempting to boot the database /export/home/sky/wombat even though Derby (instance 80000000-00d2-3265-8abf-000a0a0a0200) may still be active. Only one instance of Derby should boot a database at a time. Severe and non-recoverable corruption can result and may have already occurred. The warning is also written to the information log. This warning is primarily a Technical Support aid to determine the cause of corruption. However, if you see this warning, your best choice is to close the connection and exit the JVM. This minimizes the risk of a corruption. Close all instances of Derby, then restart one instance of Derby and shut down the database properly so that the db.lck file can be removed. The warning message continues to appear until a proper shutdown of the Derby system can delete the db.lck file. If the "derby.database.forceDatabaseLock" property is set to true then this default behavior is altered on systems where Derby cannot prevent this dual booting. If the to true, then if the platform does not provide the ability for Derby to guarantee no double boot, and if Derby finds a db.lck file when it boots, it will throw an exception (TODO - mikem - add what exception), leave the db.lck file in place and not boot the system. At this point the system will not boot until the db.lck file is removed by hand. Note that this situation can arise even when 2 VM's are not accessing the same Derby system. Also note that if the db.lck file is removed by hand while a VM is still accessing a derby.database, then there is no way for Derby to prevent a second VM from starting up and possibly corrupting the database. In this situation no warning message will be logged to the error log. To disable the default behavior of the db.lck file set property as follows: derby.database.forceDatabaseLock=true
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        Constant Field Values
      • LOCKS_ESCALATION_THRESHOLD

        static final java.lang.String LOCKS_ESCALATION_THRESHOLD
        derby.locks.escalationThreshold
        The number of row locks on a table after which we escalate to table locking. Also used by the optimizer to decide when to start with table locking. The String value must be convertible to an int.
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      • DEFAULT_LOCKS_ESCALATION_THRESHOLD

        static final int DEFAULT_LOCKS_ESCALATION_THRESHOLD
        The default value for LOCKS_ESCALATION_THRESHOLD
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      • MIN_LOCKS_ESCALATION_THRESHOLD

        static final int MIN_LOCKS_ESCALATION_THRESHOLD
        The minimum value for LOCKS_ESCALATION_THRESHOLD
        See Also:
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      • DEADLOCK_TIMEOUT

        static final java.lang.String DEADLOCK_TIMEOUT
        Configuration parameter for deadlock timeouts, set in seconds.
        See Also:
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      • DEADLOCK_TIMEOUT_DEFAULT

        static final int DEADLOCK_TIMEOUT_DEFAULT
        Default value for deadlock timesouts (20 seconds)
        See Also:
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      • WAIT_TIMEOUT_DEFAULT

        static final int WAIT_TIMEOUT_DEFAULT
        Default value for wait timeouts (60 seconds)
        See Also:
        Constant Field Values
      • DEADLOCK_MONITOR

        static final java.lang.String DEADLOCK_MONITOR
        Turn on lock monitor to help debug deadlocks. Default value is OFF. With this property turned on, all deadlocks will cause a tracing to be output to the db2j.LOG file.
        This property takes effect dynamically.
        See Also:
        Constant Field Values
      • DEADLOCK_TRACE

        static final java.lang.String DEADLOCK_TRACE
        Turn on deadlock trace to help debug deadlocks. Effect 1: This property only takes effect if DEADLOCK_MONITOR is turned ON for deadlock trace. With this property turned on, each lock object involved in a deadlock will output its stack trace to db2j.LOG. Effect 2: When a timeout occurs, a lockTable dump will also be output to db2j.LOG. This acts independent of DEADLOCK_MONITOR.
        This property takes effect dynamically.
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      • LOCKWAIT_TIMEOUT

        static final java.lang.String LOCKWAIT_TIMEOUT
        Configuration parameter for lock wait timeouts, set in seconds.
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      • DATABASE_CLASSPATH

        static final java.lang.String DATABASE_CLASSPATH
        derby.database.classpath
        Consists of a series of two part jar names.
        See Also:
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      • BOOT_DB_CLASSPATH

        static final java.lang.String BOOT_DB_CLASSPATH
        internal use only, passes the database classpathinto the class manager Undocumented.
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      • DATABASE_PROPERTIES_ONLY

        static final java.lang.String DATABASE_PROPERTIES_ONLY
        derby.database.propertiesOnly
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      • DERBY_INSTALL_URL

        static final java.lang.String DERBY_INSTALL_URL
        This property is private to Derby. This property is forcibly set by the Network Server to override any values which the user may have set. This property is only used to parameterize the Basic security policy used by the Network Server. This property is the location of the derby jars.
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      • DERBY_SECURITY_HOST

        static final java.lang.String DERBY_SECURITY_HOST
        This property is private to Derby. This property is forcibly set by the Network Server to override any values which the user may have set. This property is only used to parameterize the Basic security policy used by the Network Server. This property is the hostname which the server uses.
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      • DERBY_SECURITY_PORT

        static final java.lang.String DERBY_SECURITY_PORT
        This property is private to Derby. This property is forcibly set by the Network Server to override any values which the user may have set. This property is only used to parameterize the Basic security policy used by the Network Server. This property is the port number which the server listens to.
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        Constant Field Values
      • CREATE_WITH_NO_LOG

        static final java.lang.String CREATE_WITH_NO_LOG

        Creation of an access factory should be done with no logging. This is a run-time property that should not make it to disk in the service.properties file.

        Undocumented.

        See Also:
        Constant Field Values
      • PAGE_SIZE_PARAMETER

        static final java.lang.String PAGE_SIZE_PARAMETER
        The page size to create a table or index with. Must be a multiple of 2k, usual choices are: 2k, 4k, 8k, 16k, 32k, 64k. The default if property is not set is 4k.
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      • PAGE_SIZE_DEFAULT_LONG

        static final java.lang.String PAGE_SIZE_DEFAULT_LONG
        The default page size to use for tables that contain a long column.
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      • TBL_PAGE_SIZE_BUMP_THRESHOLD

        static final int TBL_PAGE_SIZE_BUMP_THRESHOLD
        The bump threshold for pages sizes for create tables If the approximate column sizes of a table is greater than this threshold, the page size for the tbl is bumped to PAGE_SIZE_DEFAULT_LONG provided the page size is not already specified as a property
        See Also:
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      • IDX_PAGE_SIZE_BUMP_THRESHOLD

        static final int IDX_PAGE_SIZE_BUMP_THRESHOLD
        The bump threshold for pages size for index. If the approximate key columns of an index is greater than this threshold, the page size for the index is bumped to PAGE_SIZE_DEFAULT_LONG provided the page size is not already specified as a property
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      • ROW_LOCKING

        static final java.lang.String ROW_LOCKING
        Derby supports Row Level Locking (rll), but you can use this property to disable rll. Applications which use rll will use more system resources, so if an application knows that it does not need rll then it can use this system property to force all locking in the system to lock at the table level. This property can be set to the boolean values "true" or "false". Setting the property to true is the same as not setting the property at all, and will result in rll being enabled. Setting the property to false disables rll.
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      • PROPERTIES_CONGLOM_ID

        static final java.lang.String PROPERTIES_CONGLOM_ID
        derby.storage.propertiesId
        Stores the id of the conglomerate that holds the per-database properties. Is stored in the service.properties file.

        INTERNAL USE ONLY

        See Also:
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      • STORAGE_TEMP_DIRECTORY

        static final java.lang.String STORAGE_TEMP_DIRECTORY
        derby.storage.tempDirectory
        Sets the temp directory for a database.

        See Also:
        Constant Field Values
      • DURABILITY_PROPERTY

        static final java.lang.String DURABILITY_PROPERTY
        derby.system.durability

        Currently the only valid supported case insensitive value is 'test' Note, if this property is set to any other value other than 'test', this property setting is ignored In the future, this property can be used to set different modes - for example a form of relaxed durability where database can recover to a consistent state, or to enable some kind of in-memory mode.
        When set to 'test', the store system will not force sync calls in the following cases - for the log file at each commit - for the log file before data page is forced to disk - for page allocation when file is grown - for data writes during checkpoint That means - a commit no longer guarantees that the transaction's modification will survive a system crash or JVM termination - the database may not recover successfully upon restart - a near full disk at runtime may cause unexpected errors - database can be in an inconsistent state

        This setting is provided for performance reasons and should ideally only be used when the system can withstand the above consequences.
        One sample use would be to use this mode (derby.system.durability=test) when using Derby as a test database, where high performance is required and the data is not very important
        Valid supported values are test
        Example derby.system.durability=test One can set this as a command line option to the JVM when starting the application or in the derby.properties file. It is a system level property.
        This property is static; if you change it while Derby is running, the change does not take effect until you reboot.

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      • DURABILITY_TESTMODE_NO_SYNC

        static final java.lang.String DURABILITY_TESTMODE_NO_SYNC
        This is a value supported for derby.system.durability When derby.system.durability=test, the storage system does not force syncs and the system may not recover. It is also possible that the database might be in an inconsistent state
        See Also:
        DURABILITY_PROPERTY, Constant Field Values
      • FILESYNC_TRANSACTION_LOG

        static final java.lang.String FILESYNC_TRANSACTION_LOG
        derby.storage.fileSyncTransactionLog

        When set, the store system will use sync() call on the log at commit instead of doing a write sync on all writes to the log; even if the write sync mode (rws) is supported in the JVM.

        Undocumented.

        See Also:
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      • LOG_ARCHIVE_MODE

        static final java.lang.String LOG_ARCHIVE_MODE
        derby.storage.logArchiveMode
        used to identify whether the log is being archived for the database or not. It Is stored in the service.properties file. This property can be set to the boolean values "true" or "false". Setting the property to true means log is being archived, which could be used for roll-forward recovery. Setting the property to false disables log archive mode.

        INTERNAL USE ONLY

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      • LOG_DEVICE_AT_BACKUP

        static final java.lang.String LOG_DEVICE_AT_BACKUP
        derby.storage.logDeviceWhenBackedUp
        This property indicates the logDevice location(path) when the backup was taken, used to restore the log to the same location while restoring from backup.

        INTERNAL USE ONLY

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      • MODULE_PREFIX

        static final java.lang.String MODULE_PREFIX
        derby.module.modulename

        Defines a new module. Modulename is a name used when loading the definition of a module, it provides the linkage to other properties used to define the module, derby.env.jdk.modulename and derby.env.classes.modulename. The value is a Java class name that implements functionality required by the other parts of a Derby system or database. The class can optionally implement these classes to control its use and startup.

        • org.apache.derby.iapi.services.monitor.ModuleControl
        • org.apache.derby.iapi.services.monitor.ModuleSupportable
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      • SUB_SUB_PROTOCOL_PREFIX

        static final java.lang.String SUB_SUB_PROTOCOL_PREFIX
        derby.subSubProtocol.xxx

        A new subsubprotocol can be defined by specifying the class that handles storage for the subsubprotocol by implementing the StorageFactory or WritableStorageFactory interface. This is done using a property named db2j.subsubprotocol.xxx where xxx is the subsubprotocol name. Subsubprotocol names are case sensitive and must be at least 3 characters in length.

        For instance:
        derby.subSubProtocol.mem=com.mycompany.MemStore
        defines the "mem" subsubprotocol with class com.mycompany.MemStore as its StorageFactory implementation. A database implemented using this subsubprotocol can be opened with the URL "jdbc:derby:mem:myDatabase".

        Subsubprotocols "directory", "classpath", "jar", "http", and "https" are built in and may not be overridden.

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      • MODULE_ENV_JDK_PREFIX

        static final java.lang.String MODULE_ENV_JDK_PREFIX
        Declare a minimum JDK level the class for a module or sub sub protocol supports. Set to an integer value from the JVMInfo class to represent a JDK. If the JDK is running at a lower level than the class requires then the class will not be loaded and will not be used. If there are multiple modules classes implementing the same functionality and supported by the JVM, then the one with the highest JDK requirements will be selected. This functionality is not present for sub sub protocol classes yet. See org.apache.derby.iapi.services.info.JVMInfo.JDK_ID
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      • MODULE_ENV_CLASSES_PREFIX

        static final java.lang.String MODULE_ENV_CLASSES_PREFIX
        Declare a set of classes that the class for a module or sub sub protocol requires. Value is a comma separated list of classes. If the classes listed are not loadable by the virtual machine then the module class will not be loaded and will not be used.
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      • LANG_TD_CACHE_SIZE

        static final java.lang.String LANG_TD_CACHE_SIZE
        The size of the table descriptor cache used by the data dictionary. Database. Static.

        Undocumented.

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      • LANG_TD_CACHE_SIZE_DEFAULT

        static final int LANG_TD_CACHE_SIZE_DEFAULT
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      • LANG_PERMISSIONS_CACHE_SIZE

        static final java.lang.String LANG_PERMISSIONS_CACHE_SIZE
        The size of the permissions cache used by the data dictionary. Database. Static.

        Undocumented.

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      • LANG_PERMISSIONS_CACHE_SIZE_DEFAULT

        static final int LANG_PERMISSIONS_CACHE_SIZE_DEFAULT
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      • LANG_SPS_CACHE_SIZE

        static final java.lang.String LANG_SPS_CACHE_SIZE

        The size of the stored prepared statment descriptor cache used by the data dictionary. Database. Static.

        Externally visible but undocumented.

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      • LANG_SPS_CACHE_SIZE_DEFAULT

        static final int LANG_SPS_CACHE_SIZE_DEFAULT
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      • LANG_SEQGEN_CACHE_SIZE

        static final java.lang.String LANG_SEQGEN_CACHE_SIZE
        The size of the sequence generator cache used by the data dictionary. Database. Static.

        Externally visible and documented.

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      • LANG_SEQGEN_CACHE_SIZE_DEFAULT

        static final int LANG_SEQGEN_CACHE_SIZE_DEFAULT
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      • LANG_SEQUENCE_PREALLOCATOR

        static final java.lang.String LANG_SEQUENCE_PREALLOCATOR
        Name of the implementation of SequencePreallocator which is used to tune how many values Derby pre-allocates for identity columns and sequences. Database. Static.

        Externally visible.

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      • LANGUAGE_STALE_PLAN_CHECK_INTERVAL

        static final java.lang.String LANGUAGE_STALE_PLAN_CHECK_INTERVAL
        derby.language.stalePlanCheckInterval

        This property tells the number of times a prepared statement should be executed before checking whether its plan is stale. Database. Dynamic.

        Externally visible but undocumented.

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      • DEFAULT_LANGUAGE_STALE_PLAN_CHECK_INTERVAL

        static final int DEFAULT_LANGUAGE_STALE_PLAN_CHECK_INTERVAL
        Default value for above
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      • MIN_LANGUAGE_STALE_PLAN_CHECK_INTERVAL

        static final int MIN_LANGUAGE_STALE_PLAN_CHECK_INTERVAL
        Minimum value for above
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      • STATEMENT_CACHE_SIZE

        static final java.lang.String STATEMENT_CACHE_SIZE
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      • STATEMENT_CACHE_SIZE_DEFAULT

        static final int STATEMENT_CACHE_SIZE_DEFAULT
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      • STORAGE_AUTO_INDEX_STATS

        static final java.lang.String STORAGE_AUTO_INDEX_STATS
        Tells if automatic index statistics update is enabled (default is true).
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      • STORAGE_AUTO_INDEX_STATS_LOGGING

        static final java.lang.String STORAGE_AUTO_INDEX_STATS_LOGGING
        Tells if activities related to automatic index statistics update should be written to the Derby system log file (derby.log).
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      • STORAGE_AUTO_INDEX_STATS_TRACING

        static final java.lang.String STORAGE_AUTO_INDEX_STATS_TRACING
        Tells if more detailed activities related to automatic index statistics update should be traced. Accepted values are: *off*, stdout, log, both
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      • STORAGE_AUTO_INDEX_STATS_DEBUG_CREATE_THRESHOLD

        static final java.lang.String STORAGE_AUTO_INDEX_STATS_DEBUG_CREATE_THRESHOLD

        Specifies the lower threshold for the number of rows in a table before creating statistics for the associated indexes.

        NOTE: This is a debug property which will be removed or renamed.

        Undocumented.

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      • STORAGE_AUTO_INDEX_STATS_DEBUG_CREATE_THRESHOLD_DEFAULT

        static final int STORAGE_AUTO_INDEX_STATS_DEBUG_CREATE_THRESHOLD_DEFAULT
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      • STORAGE_AUTO_INDEX_STATS_DEBUG_ABSDIFF_THRESHOLD

        static final java.lang.String STORAGE_AUTO_INDEX_STATS_DEBUG_ABSDIFF_THRESHOLD

        Specifies the lower threshold for the absolute difference between the row estimate for the table and the row estimate for the index before creating statistics for the associated indexes.

        NOTE: This is a debug property which will be removed or renamed.

        Undocumented.

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      • STORAGE_AUTO_INDEX_STATS_DEBUG_ABSDIFF_THRESHOLD_DEFAULT

        static final int STORAGE_AUTO_INDEX_STATS_DEBUG_ABSDIFF_THRESHOLD_DEFAULT
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      • STORAGE_AUTO_INDEX_STATS_DEBUG_LNDIFF_THRESHOLD

        static final java.lang.String STORAGE_AUTO_INDEX_STATS_DEBUG_LNDIFF_THRESHOLD

        Specifies the lower threshold for the logarithmical (natural logarithm e) difference between the row estimate for the table and the row estimate for the index before creating statistics for the associated indexes.

        NOTE: This is a debug property which will be removed or renamed.

        Undocumented.

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      • STORAGE_AUTO_INDEX_STATS_DEBUG_LNDIFF_THRESHOLD_DEFAULT

        static final double STORAGE_AUTO_INDEX_STATS_DEBUG_LNDIFF_THRESHOLD_DEFAULT
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      • STORAGE_AUTO_INDEX_STATS_DEBUG_QUEUE_SIZE

        static final java.lang.String STORAGE_AUTO_INDEX_STATS_DEBUG_QUEUE_SIZE

        Specifies the size of the work unit queue in the index statistics update daemon.

        NOTE: This is a debug property which will be removed or renamed.

        Undocumented.

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      • STORAGE_AUTO_INDEX_STATS_DEBUG_QUEUE_SIZE_DEFAULT

        static final int STORAGE_AUTO_INDEX_STATS_DEBUG_QUEUE_SIZE_DEFAULT
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      • STORAGE_AUTO_INDEX_STATS_DEBUG_KEEP_DISPOSABLE_STATS

        static final java.lang.String STORAGE_AUTO_INDEX_STATS_DEBUG_KEEP_DISPOSABLE_STATS

        Specifies whether to revert to 10.8 behavior and keep disposable stats.

        NOTE: This is a debug property which will be removed or renamed.

        Undocumented.

        See Also:
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      • PROP_XA_TRANSACTION_TIMEOUT

        static final java.lang.String PROP_XA_TRANSACTION_TIMEOUT
        The property name used to get the default value for XA transaction timeout in seconds. Zero means no timout.
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      • DEFAULT_XA_TRANSACTION_TIMEOUT

        static final int DEFAULT_XA_TRANSACTION_TIMEOUT
        The default value for XA transaction timeout if the corresponding property is not found in system properties. Zero means no timeout.
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      • SQL_AUTHORIZATION_PROPERTY

        static final java.lang.String SQL_AUTHORIZATION_PROPERTY
        See Also:
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      • DEFAULT_CONNECTION_MODE_PROPERTY

        static final java.lang.String DEFAULT_CONNECTION_MODE_PROPERTY
        Default connection level authorization, set to one of NO_ACCESS, READ_ONLY_ACCESS or FULL_ACCESS. Defaults to FULL_ACCESS if not set.
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      • READ_ONLY_ACCESS_USERS_PROPERTY

        static final java.lang.String READ_ONLY_ACCESS_USERS_PROPERTY
        List of users with read-only connection level authorization.
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      • FULL_ACCESS_USERS_PROPERTY

        static final java.lang.String FULL_ACCESS_USERS_PROPERTY
        List of users with full access connection level authorization.
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      • REQUIRE_AUTHENTICATION_PARAMETER

        static final java.lang.String REQUIRE_AUTHENTICATION_PARAMETER
        See Also:
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      • AUTHENTICATION_PROVIDER_PARAMETER

        static final java.lang.String AUTHENTICATION_PROVIDER_PARAMETER
        See Also:
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      • USER_PROPERTY_PREFIX

        static final java.lang.String USER_PROPERTY_PREFIX
        See Also:
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      • AUTHENTICATION_PROVIDER_NATIVE

        static final java.lang.String AUTHENTICATION_PROVIDER_NATIVE
        See Also:
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      • AUTHENTICATION_PROVIDER_BUILTIN

        static final java.lang.String AUTHENTICATION_PROVIDER_BUILTIN
        See Also:
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      • AUTHENTICATION_PROVIDER_LDAP

        static final java.lang.String AUTHENTICATION_PROVIDER_LDAP
        See Also:
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      • AUTHENTICATION_SERVER_PARAMETER

        static final java.lang.String AUTHENTICATION_SERVER_PARAMETER
        See Also:
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      • AUTHENTICATION_PROVIDER_LOCAL_SUFFIX

        static final java.lang.String AUTHENTICATION_PROVIDER_LOCAL_SUFFIX
        See Also:
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      • AUTHENTICATION_PROVIDER_NATIVE_LOCAL

        static final java.lang.String AUTHENTICATION_PROVIDER_NATIVE_LOCAL
        See Also:
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      • AUTHENTICATION_NATIVE_PASSWORD_LIFETIME

        static final java.lang.String AUTHENTICATION_NATIVE_PASSWORD_LIFETIME
        See Also:
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      • AUTHENTICATION_NATIVE_PASSWORD_LIFETIME_DEFAULT

        static final long AUTHENTICATION_NATIVE_PASSWORD_LIFETIME_DEFAULT
        See Also:
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      • AUTHENTICATION_PASSWORD_EXPIRATION_THRESHOLD

        static final java.lang.String AUTHENTICATION_PASSWORD_EXPIRATION_THRESHOLD
        See Also:
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      • AUTHENTICATION_PASSWORD_EXPIRATION_THRESHOLD_DEFAULT

        static final double AUTHENTICATION_PASSWORD_EXPIRATION_THRESHOLD_DEFAULT
        See Also:
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      • AUTHENTICATION_BUILTIN_ALGORITHM

        static final java.lang.String AUTHENTICATION_BUILTIN_ALGORITHM

        Property that specifies the name of the hash algorithm to use with the configurable hash authentication scheme.

        See Also:
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      • AUTHENTICATION_BUILTIN_ALGORITHM_DEFAULT

        static final java.lang.String AUTHENTICATION_BUILTIN_ALGORITHM_DEFAULT
        Default value for derby.authentication.builtin.algorithm when creating a new database.
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      • AUTHENTICATION_BUILTIN_ALGORITHM_FALLBACK

        static final java.lang.String AUTHENTICATION_BUILTIN_ALGORITHM_FALLBACK
        Alternative default value for derby.authentication.builtin.algorithm if AUTHENTICATION_BUILTIN_ALGORITHM_DEFAULT is not available at database creation time.
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      • AUTHENTICATION_BUILTIN_SALT_LENGTH

        static final java.lang.String AUTHENTICATION_BUILTIN_SALT_LENGTH

        Property that specifies the number of bytes with random salt to use when hashing credentials using the configurable hash authentication scheme.

        See Also:
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      • AUTHENTICATION_BUILTIN_SALT_LENGTH_DEFAULT

        static final int AUTHENTICATION_BUILTIN_SALT_LENGTH_DEFAULT
        The default value for derby.authentication.builtin.saltLength.
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      • AUTHENTICATION_BUILTIN_ITERATIONS

        static final java.lang.String AUTHENTICATION_BUILTIN_ITERATIONS

        Property that specifies the number of times to apply the hash function in the configurable hash authentication scheme.

        See Also:
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      • AUTHENTICATION_BUILTIN_ITERATIONS_DEFAULT

        static final int AUTHENTICATION_BUILTIN_ITERATIONS_DEFAULT
        Default value for derby.authentication.builtin.iterations.
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      • LOG_SWITCH_INTERVAL

        static final java.lang.String LOG_SWITCH_INTERVAL
        Property name for specifying log switch interval Undocumented.
        See Also:
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      • CHECKPOINT_INTERVAL

        static final java.lang.String CHECKPOINT_INTERVAL
        Property name for specifying checkpoint interval Undocumented.
        See Also:
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      • LOG_BUFFER_SIZE

        static final java.lang.String LOG_BUFFER_SIZE
        Property name for specifying log Buffer Size Undocumented.
        See Also:
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      • REPLICATION_LOG_BUFFER_SIZE

        static final java.lang.String REPLICATION_LOG_BUFFER_SIZE
        Property name for specifying the size of the replication log buffers
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      • REPLICATION_MIN_SHIPPING_INTERVAL

        static final java.lang.String REPLICATION_MIN_SHIPPING_INTERVAL
        Property name for specifying the minimum log shipping interval
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      • REPLICATION_MAX_SHIPPING_INTERVAL

        static final java.lang.String REPLICATION_MAX_SHIPPING_INTERVAL
        Property name for specifying the maximum log shipping interval
        See Also:
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      • REPLICATION_VERBOSE

        static final java.lang.String REPLICATION_VERBOSE
        Property name for specifying whether or not replication messages are written to the log
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      • ALPHA_BETA_ALLOW_UPGRADE

        static final java.lang.String ALPHA_BETA_ALLOW_UPGRADE

        Allow database upgrade during alpha/beta time. Only intended to be used to allow Derby developers to test their upgrade code. Only supported as a system/application (derby.properties) property.

        Undocumented.

        See Also:
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      • IN_RESTORE_FROM_BACKUP

        static final java.lang.String IN_RESTORE_FROM_BACKUP
        db2j.inRestore
        This Property is used to indicate that we are in restore mode if if the system is doing a restore from backup. Used internally to set flags to indicate that service is not booted.

        INTERNAL USE ONLY

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      • DELETE_ROOT_ON_ERROR

        static final java.lang.String DELETE_ROOT_ON_ERROR
        db2j.deleteRootOnError
        If we a new root is created while doing restore from backup, it should be deleted if a error occur before we could complete restore successfully.

        INTERNAL USE ONLY

        See Also:
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      • START_DRDA

        static final java.lang.String START_DRDA

        derby.drda.startNetworkServer

        If true then we will attempt to start a DRDA network server when Derby boots, turning the current JVM into a server.

        Default: false

        See Also:
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      • DRDA_PROP_LOGCONNECTIONS

        static final java.lang.String DRDA_PROP_LOGCONNECTIONS

        derby.drda.logConnections

        Indicates whether to log connections and disconnections.

        Default: false

        See Also:
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      • DRDA_PROP_TRACEALL

        static final java.lang.String DRDA_PROP_TRACEALL

        derby.drda.traceAll

        Turns tracing on for all sessions.

        Default: false

        Default: false

        See Also:
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      • DRDA_PROP_TRACE

        static final java.lang.String DRDA_PROP_TRACE

        derby.drda.trace

        See Also:
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      • DRDA_PROP_TRACEDIRECTORY

        static final java.lang.String DRDA_PROP_TRACEDIRECTORY
        derby.drda.traceDirectory
        The directory used for network server tracing files.
        Default: if the derby.system.home property has been set, it is the default. Otherwise, the default is the current directory.
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      • DRDA_PROP_MINTHREADS

        static final java.lang.String DRDA_PROP_MINTHREADS
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      • DRDA_PROP_MAXTHREADS

        static final java.lang.String DRDA_PROP_MAXTHREADS
        See Also:
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      • DRDA_PROP_SSL_MODE

        static final java.lang.String DRDA_PROP_SSL_MODE
        derby.drda.sslMode
        This property may be set to one of the following three values off: No Wire encryption basic: Encryption, but no SSL client authentication peerAuthentication: Encryption and with SSL client authentication
        See Also:
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      • DRDA_PROP_SECURITYMECHANISM

        static final java.lang.String DRDA_PROP_SECURITYMECHANISM
        derby.drda.securityMechanism
        This property can be set to one of the following values USER_ONLY_SECURITY CLEAR_TEXT_PASSWORD_SECURITY ENCRYPTED_USER_AND_PASSWORD_SECURITY STRONG_PASSWORD_SUBSTITUTE_SECURITY
        if derby.drda.securityMechanism is set to a valid mechanism, then the Network Server accepts only connections which use that security mechanism. No other types of connections are accepted.
        if the derby.drda.securityMechanism is not set at all, then the Network Server accepts any connection which uses a valid security mechanism.
        E.g derby.drda.securityMechanism=USER_ONLY_SECURITY This property is static. Server must be restarted for the property to take effect. Default value for this property is as though it is not set - in which case the server will allow clients with supported security mechanisms to connect
        See Also:
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      • DRDA_PROP_PORTNUMBER

        static final java.lang.String DRDA_PROP_PORTNUMBER
        derby.drda.portNumber
        The port number used by the network server.
        See Also:
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      • DRDA_PROP_KEEPALIVE

        static final java.lang.String DRDA_PROP_KEEPALIVE
        derby.drda.keepAlive
        client socket setKeepAlive value
        See Also:
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      • DRDA_PROP_STREAMOUTBUFFERSIZE

        static final java.lang.String DRDA_PROP_STREAMOUTBUFFERSIZE
        derby.drda.streamOutBufferSize size of buffer used when stream out for client.
        See Also:
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      • TERRITORY_BASED_COLLATION

        static final java.lang.String TERRITORY_BASED_COLLATION
        See Also:
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      • TERRITORY_BASED_PRIMARY_COLLATION

        static final java.lang.String TERRITORY_BASED_PRIMARY_COLLATION
        See Also:
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      • TERRITORY_BASED_SECONDARY_COLLATION

        static final java.lang.String TERRITORY_BASED_SECONDARY_COLLATION
        See Also:
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      • TERRITORY_BASED_TERTIARY_COLLATION

        static final java.lang.String TERRITORY_BASED_TERTIARY_COLLATION
        See Also:
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      • TERRITORY_BASED_IDENTICAL_COLLATION

        static final java.lang.String TERRITORY_BASED_IDENTICAL_COLLATION
        See Also:
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      • STORAGE_DATA_NOT_SYNCED_AT_CHECKPOINT

        static final java.lang.String STORAGE_DATA_NOT_SYNCED_AT_CHECKPOINT
        db2j.storage.dataNotSyncedAtCheckPoint

        When set, the store system will not force a sync() call on the containers during a checkpoint.

        An internal debug system only flag. The recovery system will not work properly if this flag is enabled, it is provided to do performance debugging to see whether the system is I/O bound based on checkpoint synchronous I/O.

        See Also:
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      • STORAGE_DATA_NOT_SYNCED_AT_ALLOCATION

        static final java.lang.String STORAGE_DATA_NOT_SYNCED_AT_ALLOCATION
        db2j.storage.dataNotSyncedAtAllocation

        When set, the store system will not force a sync() call on the containers when pages are allocated.

        An internal debug system only flag. The recovery system will not work properly if this flag is enabled, it is provided to do performance debugging to see whether the system is I/O bound based on page allocation synchronous I/O.

        See Also:
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      • STORAGE_LOG_NOT_SYNCED

        static final java.lang.String STORAGE_LOG_NOT_SYNCED
        db2j.storage.logNotSynced

        When set, the store system will not force a sync() call on the log at commit.

        An internal debug system only flag. The recovery system will not work properly if this flag is enabled, it is provided to do performance debugging to see whether the system is I/O bound based on log file synchronous I/O.

        See Also:
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      • STORAGE_USE_DEFAULT_FILE_PERMISSIONS

        static final java.lang.String STORAGE_USE_DEFAULT_FILE_PERMISSIONS

        derby.storage.useDefaultFilePermissions = {false,true}

        When set to true, the store system will not limit file permissions of files created by Derby to owner, but rely on the current OS default. On Unix, this is determined by umask(1). Only relevant for JVM >= 6.

        The default value is true on embedded, but false on the Network server if started from command line, otherwise it is true for the server, too (i.e. started via API).

        See Also:
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      • SERVER_STARTED_FROM_CMD_LINE

        static final java.lang.String SERVER_STARTED_FROM_CMD_LINE
        Internal. True if the network server was started from the command line (not from API). Used to determine whether to narrow file permissions iff derby.storage.useDefaultFilePermissions isn't specified. INTERNAL USE ONLY
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