# derby.locks.waitTimeout

#### Function

Specifies the number of seconds after which Derby aborts a transaction when it is waiting for a lock. When Derby aborts (and rolls back) the transaction, the transaction receives an SQLException of SQLState 40XL1.

The time specified by this property is approximate.

A zero value for this property means that Derby aborts a transaction any time it cannot immediately obtain a lock that it requests.

A negative value for this property is equivalent to an infinite wait time; the transaction waits forever to obtain the lock.

If this property is set to a value greater than or equal to zero but less than the value of derby.locks.deadlockTimeout, Derby never performs any deadlock checking.

#### Default

60 seconds.

#### Example

    CALL SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY(
        'derby.locks.waitTimeout', '15')
    derby.locks.waitTimeout=60

#### Dynamic or static

Dynamic; the change takes effect immediately. For information about dynamic changes to properties, see Dynamic and static properties.

Parent topic: Derby properties
Related reference
derby.authentication.builtin.algorithm
derby.authentication.ldap.searchAuthDN
derby.authentication.ldap.searchAuthPW
derby.authentication.ldap.searchBase
derby.authentication.ldap.searchFilter
derby.authentication.provider
derby.authentication.server
derby.connection.requireAuthentication
derby.database.defaultConnectionMode
derby.database.forceDatabaseLock
derby.database.fullAccessUsers
derby.database.noAutoBoot
derby.database.propertiesOnly
derby.database.readOnlyAccessUsers
derby.database.sqlAuthorization
derby.infolog.append
derby.jdbc.xaTransactionTimeout
derby.language.logQueryPlan
derby.language.logStatementText
derby.locks.deadlockTimeout
derby.locks.deadlockTrace
derby.locks.escalationThreshold
derby.locks.monitor
derby.replication.logBufferSize
derby.replication.maxLogShippingInterval
derby.replication.minLogShippingInterval
derby.replication.verbose
derby.storage.initialPages
derby.storage.minimumRecordSize
derby.storage.pageCacheSize
derby.storage.pageReservedSpace
derby.storage.pageSize
derby.storage.rowLocking
derby.storage.tempDirectory
derby.stream.error.field
derby.stream.error.file
derby.stream.error.method
derby.stream.error.logSeverityLevel
derby.system.bootAll
derby.system.durability
derby.system.home
derby.user.UserName