Berkeley DB: DBENV->set_lk_max
Description: Berkeley DB: An embedded database programmatic toolkit.
Keywords: embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++

# DBENV->set_lk_max |

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    #include <db.h>

    int
    DBENV->set_lk_max(DB_ENV *dbenv, u_int32_t lk_max);

# Description

Set the maximum number of locks to be held or requested in the table. This value is used by DBENV->open to estimate how much space to allocate for various lock-table data structures. If no value is specified, a default value is used.

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

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

The environment's maximum number of locks 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", one or more whitespace characters, and the number of locks. Configuration in the DB_CONFIG file silently overrules configuration done using the DBENV->set_lk_max function.

# 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, lock_detect, lock_get, lock_id, lock_put, lock_stat and lock_vec.`

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