# DB_ENV->log_flush

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    #include <db.h>

    int
    DB_ENV->log_flush(DB_ENV *env, const DB_LSN *lsn);

# Description

The DB_ENV->log_flush method guarantees that all log records whose DB_LSN values are less than or equal to the lsn argument have been written to disk. If lsn is NULL, all records in the log are flushed.

The DB_ENV->log_flush method returns a non-zero error value on failure and 0 on success.

# Errors

The DB_ENV->log_flush method may fail and return a non-zero error for the following conditions:

EINVAL
  An invalid flag value or parameter was specified.

The DB_ENV->log_flush method may fail and return a non-zero error for errors specified for other Berkeley DB and C library or system functions. If a catastrophic error has occurred, the DB_ENV->log_flush method may fail and return DB_RUNRECOVERY, in which case all subsequent Berkeley DB calls will fail in the same way.

# Class

DB_ENV, DB_LOGC, DB_LSN

# See Also

Logging Subsystem and Related Methods`

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