Understanding database server exceptions

A database server exception is an unexpected condition that occurs within the database server.

A database server exception can occur in any of the following tasks:
  • Within an SQL statement

    The mi_exec() and mi_exec_prepared_statement() functions execute SQL statements. An exception can occur when the database server executes an SQL statement.

  • Within a UDR

    The mi_routine_exec() function executes UDRs through the Fastpath interface. An exception can occur when this UDR executes.

  • By the DataBlade® API function, mi_db_error_raise()

    The mi_db_error_raise() function can explicitly raise a database server exception within a DataBlade® API module. For more information, see Raise an exception.

  • Within the execution of some other DataBlade® API function

    Other functions in the DataBlade® API might raise exceptions when they execute.

When the database server encounters a database server exception, it raises the MI_Exception event.