To cancel any of the options that have been set with the SET statement, you issue the opposite SET statement (SET NOoption to turn an option off or SET option in the case of JOINOP NOTIMEOUT to restore the default behavior).

The following SET statement lets you specify how transaction errors are handled in the current session:

To direct Ingres to roll back the effects of the entire current transaction if an error occurs, specify ROLLBACK TRANSACTION. To direct Ingres to roll back only the current statement (the default), specify ROLLBACK STATEMENT. To determine the current status of transaction error handling, issue the SELECT DBMSINFO('ON_ERROR_STATE') statement.

Specifying ROLLBACK TRANSACTION reduces logging overhead, and help performance; the performance gain is offset by the fact that, if an error occurs, the entire transaction is rolled back, not the single statement that caused the error.

The following errors always roll back the current transaction, regardless of the current transaction error-handling setting:

To determine if a transaction was aborted as the result of a database statement error, issue the statement SELECT DBMSINFO('ON_ERROR_STATE'). If the error aborted the transaction, this statement returns 0, indicating that the application is currently not in a transaction.

You cannot issue the SET SESSION WITH ON_ERROR statement from within a database procedure or multi-statement transaction.