This script demonstrates the EXCEPTION_INIT pragma.

    
SQL> CREATE TABLE emp (
  2    id         NUMBER PRIMARY KEY,
  3    fname VARCHAR2(50),
  4    lname  VARCHAR2(50)
  5  );

Table created.

SQL>
SQL>
SQL>
SQL> CREATE TABLE log_table(
  2    code     VARCHAR2(100),
  3    message     VARCHAR2(100),
  4    info     VARCHAR2(100));

Table created.

SQL>
SQL> DECLARE
  2    e_MissingNull EXCEPTION;
  3    PRAGMA EXCEPTION_INIT(e_MissingNull, -1400);
  4  BEGIN
  5    INSERT INTO emp (id) VALUES (NULL);
  6  EXCEPTION
  7    WHEN e_MissingNull then
  8      INSERT INTO log_table (info) VALUES ('ORA-1400 occurred');
  9  END;
 10  /

PL/SQL procedure successfully completed.

SQL>
SQL> SELECT info FROM log_table;

INFO
--------------------------------------------------------------------------------
ORA-1400 occurred

1 row selected.

SQL> drop table log_table;

Table dropped.

SQL> drop table emp;

Table dropped.

1.	Check exception type
2.	Deal with multiple exception branches
3.	when other exceptions then
4.	Handle update exception
5.	declaration exception
6.	handle exception of duplicate value on index
7.	when other then not user-defined exception
8.	Using PRAGMA EXCEPTION_INIT
9.	Different Values of SQLCODE and SQLERRM
10.	The OTHERS Exception Handler
11.	Error-handling features of PL/SQL: log exception
12.	PLS-483 error: Duplicate Handlers
13.	NO_DATA_FOUND exception.
14.	The scope of exceptions.
15.	Sub block in exception section
16.	Catch all exceptions
17.	Catch user-defined exception
18.	Check zero divide exception
19.	Combines declaring an EXCEPTION variable
20.	Insert error message to a table in exception handler
21.	Mapping a user-defined error code to an EXCEPTION variable
22.	Error Handling Call
23.	Raise exception in if statement

This script demonstrates the EXCEPTION_INIT pragma. : Exception Handle « PL SQL « Oracle PL / SQL

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