DB_ENV->set_tx_timestamp()

DB_ENV->set_tx_timestamp()
Prev	Chapter 12. The DB_TXN Handle	Next

#include <db.h>

int
DB_ENV->set_tx_timestamp(DB_ENV *dbenv, time_t *timestamp);

Recover to the time specified by timestamp rather than to the most current possible date.

Once a database environment has been upgraded to a new version of Berkeley DB involving a log format change (see Upgrading Berkeley DB installations), it is no longer possible to recover to a specific time before that upgrade.

The DB_ENV->set_tx_timestamp() method configures operations performed using the specified DB_ENV handle, not all operations performed on the underlying database environment.

The DB_ENV->set_tx_timestamp() method may not be called after the DB_ENV->open() method is called.

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

Parameters

timestamp

The timestamp parameter references the memory location where the recovery timestamp is located.

The timestamp parameter should be the number of seconds since 0 hours, 0 minutes, 0 seconds, January 1, 1970, Coordinated Universal Time; that is, the Epoch.

Errors

The DB_ENV->set_tx_timestamp() method may fail and return one of the following non-zero errors:

EINVAL

If it is not possible to recover to the specified time using the log files currently present in the environment; or if an invalid flag value or parameter was specified.

Class

DB_ENV, DB_TXN

Prev	Up	Next
DB_ENV->set_tx_max()	Home	DB_ENV->txn_recover()