# DBENV->set_lk_max_lockers

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    #include <db.h>

    int
    DBENV->set_lk_max_lockers(DB_ENV *dbenv, u_int32_t max);

# Description

Set the maximum number of simultaneous locking entities supported by the Berkeley DB lock subsystem. This value is used by DBENV->open to estimate how much space to allocate for various lock-table data structures. For specific information on configuring the size of the lock subsystem, see Configuring locking: sizing the system.

The DBENV->set_lk_max_lockers interface may only be used to configure Berkeley DB before the DBENV->open interface is called.

The DBENV->set_lk_max_lockers function returns a non-zero error value on failure and 0 on success.

The database environment's maximum number of lockers may also be set using the environment's DB_CONFIG file. The syntax of the entry in that file is a single line with the string "set_lk_max_lockers", one or more whitespace characters, and the number of lockers. Because the DB_CONFIG file is read when the database environment is opened, it will silently overrule configuration done before that time.

# Errors

EINVAL
  An invalid flag value or parameter was specified.

  Called after DBENV->open was called.

# See Also

DBENV->set_lk_conflicts, DBENV->set_lk_detect, DBENV->set_lk_max_locks, DBENV->set_lk_max_lockers, DBENV->set_lk_max_objects, DBENV->set_lk_max, lock_detect, lock_get, lock_id, lock_put, lock_stat and lock_vec.`

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