How do you end an exception in PL SQL?
DECLARE exception_name EXCEPTION; BEGIN IF condition THEN RAISE exception_name; END IF; EXCEPTION WHEN exception_name THEN statement; END; You can use the above syntax in raising the Oracle standard exception or any user-defined exception.
What is begin end in PL SQL?
BEGIN – END blocks are the building blocks of PL/SQL, and each PL/SQL unit is contained within at least one such block. Nesting BEGIN – END blocks within PL/SQL blocks is usually done to trap certain exceptions and handle that special exception and then raise unrelated exceptions.
What are the exceptions in PL SQL?
Overview of PL/SQL Error Handling. Advantages of PL/SQL Exceptions. Predefined PL/SQL Exceptions. Defining Your Own PL/SQL Exceptions….Predefined PL/SQL Exceptions.
| Exception | Oracle Error | SQLCODE Value |
|---|---|---|
| NO_DATA_FOUND | ORA-01403 | +100 |
| NOT_LOGGED_ON | ORA-01012 | -1012 |
| PROGRAM_ERROR | ORA-06501 | -6501 |
| ROWTYPE_MISMATCH | ORA-06504 | -6504 |
How does an execution block start and end in PL SQL?
A PL/SQL block has an executable section. An executable section starts with the keyword BEGIN and ends with the keyword END . The executable section must have a least one executable statement, even if it is the NULL statement which does nothing.
What is exception in PL SQL Mcq?
This section starts with the EXCEPTION keyword. It contains exception(s) that handle errors in the program.
What is Sqlcode in Plsql?
The function SQLCODE returns the number code of the most recent exception. For internal exceptions, SQLCODE returns the number of the associated Oracle error. SQLCODE is only useful in an exception handler. Outside a handler, SQLCODE always returns 0 .
When an exception occurs in a PL SQL block and it is handled the block is said to?
If no handler is found, PL/SQL returns an unhandled exception error to the host environment. Exceptions cannot propagate across remote procedure calls done through database links. A PL/SQL block cannot catch an exception raised by a remote subprogram.