The discussion in the following paragraphs does not apply when
binlog_format=ROW because, in
that case, temporary tables are not replicated; this means that
there are never any temporary tables on the replica to be lost
in the event of an unplanned shutdown by the replica. The
remainder of this section applies only when using
statement-based or mixed-format replication. Loss of replicated
temporary tables on the replica can be an issue, whenever
statements involving temporary tables that can be logged safely
using statement-based format. For more information about
row-based replication and temporary tables, see
Row-based logging of temporary tables.
Safe replica shutdown when using temporary tables. Temporary tables are replicated except in the case where you stop the replica server (not just the replication threads) and you have replicated temporary tables that are open for use in updates that have not yet been executed on the replica. If you stop the replica server, the temporary tables needed by those updates are no longer available when the replica is restarted. To avoid this problem, do not shut down the replica while it has temporary tables open. Instead, use the following procedure:
STOP SLAVE SQL_THREADstatement.
SHOW STATUSto check the value of the
If the value is not 0, restart the replication SQL thread with
START SLAVE SQL_THREADand repeat the procedure later.
When the value is 0, issue a mysqladmin shutdown command to stop the replica.
Temporary tables and replication options.
By default, all temporary tables are replicated; this happens
whether or not there are any matching
options in effect. However, the
options are honored for temporary tables. The exception is
that to enable correct removal of temporary tables at the end
of a session, a replica always replicates a
TEMPORARY TABLE IF EXISTS statement, regardless of
any exclusion rules that would normally apply for the
A recommended practice when using statement-based or
mixed-format replication is to designate a prefix for exclusive
use in naming temporary tables that you do not want replicated,
then employ a
option to match that prefix. For example, you might give all
such tables names beginning with
norepyourtable, and so on), then use
to prevent them from being replicated.