# DbEnv.lock_stat |

`

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    import com.sleepycat.db.*;

    public DbLockStat lock_stat()
    	throws DbException;

# Description

The DbEnv.lock_stat method creates a DbLockStat object encapsulating a statistical structure. The lock region statistics are stored in a DbLockStat object. The following data fields are available from the DbLockStat object:

public int st_lockid;
  The last allocated lock ID.
public int st_nmodes;
  The number of lock modes.
public int st_maxlocks;
  The maximum number of locks possible.
public int st_nlockers;
  The number of current lockers.
public int st_maxnlockers;
  The maximum number of lockers at any one time.
public int st_nrequests;
  The total number of locks requested.
public int st_nreleases;
  The total number of locks released.
public int st_nconflicts;
  The total number of locks not immediately available due to conflicts.
public int st_ndeadlocks;
  The number of deadlocks detected.
public int st_regsize;
  The size of the region.
public int st_region_wait;
  The number of times that a thread of control was forced to wait before obtaining the region lock.
public int st_region_nowait;
  The number of times that a thread of control was able to obtain the region lock without waiting.

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

# Errors

If a fatal error occurs in Berkeley DB, the DbEnv.lock_stat method will fail and throw a DbRunRecoveryException, at which point all subsequent database calls will fail in the same way.

In addition, the DbEnv.lock_stat method may fail and throw an exception for errors specified for other Berkeley DB and C library or system methods.

### Classes

DbEnv, DbLock

# See Also

DbEnv.set_lk_conflicts, DbEnv.set_lk_detect, DbEnv.set_lk_max, DbEnv.lock_detect, DbEnv.lock_get, DbEnv.lock_id, DbLock.put and DbEnv.lock_stat.`

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