# DbEnv.lock_id

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    import com.sleepycat.db.*;

    public int lock_id()
        throws DbException;

# Description

The DbEnv.lock_id method returns a locker ID, which is guaranteed to be unique in the specified lock table.

The DbEnv.lock_id_free method should be called to return the locker ID to the Berkeley DB library when it is no longer needed.

The DbEnv.lock_id method throws an exception that encapsulates a non-zero error value on failure.

# Errors

The DbEnv.lock_id method may fail and throw an exception for errors specified for other Berkeley DB and C library or system methods. If a catastrophic error has occurred, the DbEnv.lock_id method may fail and throw a DbRunRecoveryException, in which case all subsequent Berkeley DB calls will fail in the same way.

# Class

DbEnv, DbLock

# See Also

Locking Subsystem and Related Methods`

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