# DBENV->set_lg_max

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    #include <db.h>

    int
    DBENV->set_lg_max(DB_ENV *dbenv, u_int32_t lg_max);

# Description

Set the maximum size of a single file in the log, in bytes. Because DB_LSN file offsets are unsigned 4-byte values, the set value may not be larger than the maximum unsigned 4-byte value. By default, or if the value is set to 0, a size of 10MB is used.

See Log File Limits for more information.

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

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

The database environment's log file size 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_lg_max", one or more whitespace characters, and the size in bytes. 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.

  The specified log file size was too large.

# See Also

DBENV->set_lg_bsize, DBENV->set_lg_max, log_archive, log_compare, log_file, log_flush, log_get, log_put, log_register, log_stat and log_unregister.`

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