$session->transactionStart( $lock_code )
The transactionStart() function starts a transaction block, which may subsequently be aborted or committed by using transactionAbort()/transactionCommit().
sub SM_READ_LOCK { 1 };
$session->transactionStart( SM_READ_LOCK );
The $lock_code values have the possible values shown in Lock code literals.
| Lock code |
Literal |
|---|---|
| 0 |
SM_NO_LOCK |
| 1 |
SM_READ_LOCK_ONLY |
| 2 |
SM_READ_LOCK |
| 3 |
SM_WRITE_LOCK |
