SQL>
SQL>
SQL> -- User defined exception
SQL>
SQL> begin
2 declare --start of nested block
3 NESTED_EXCEPTION exception;
4 begin
5 raise NESTED_EXCEPTION;
6 end; --end of nested block
7 exception
8 when NESTED_EXCEPTION then
9 dbms_output.put_line('NESTED_EXCEPTION caught!');
10 end;
11 /
when NESTED_EXCEPTION then
*
ERROR at line 8:
ORA-06550: line 8, column 10:
PLS-00201: identifier 'NESTED_EXCEPTION' must be declared
ORA-06550: line 0, column 0:
PL/SQL: Compilation unit analysis terminated
SQL>
SQL>