How to Trap ORA-6502 Error Stack Information and Insert into a Table using PL/SQL?
(Doc ID 605225.1)
Last updated on JULY 05, 2017
Applies to:PL/SQL - Version: 10.2.0.4 to 22.214.171.124
Information in this document applies to any platform.
***Checked for relevance on 19-Feb-2010***
The DBMS_UTILITY package provides various utility subprograms and the one illustrated in this Note enables us to store information about an error. The following functions from the DBMS_UTILITY package that will be used in this Note are:
FORMAT_CALL_STACK - Formats the current call stack
29 ----- PL/SQL Call Stack -----
object line object
385b5af28 23 anonymous block
FORMAT_ERROR_STACK - Formats the current error stack
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
FORMAT_ERROR_BACKTRACE - Formats the backtrace from the point of the current error to the exception handler where the error has been caught. (Look in the USER_SOURCE table for the failing line.)
ORA-06512: at line 12
The following code demonstrates how this information can be inserted into an error log table.
Note: ORA-6502 can be raised in the declaration part of the PL/SQL program by faulty initialization expressions. Handlers in the current block cannot catch the raised exception because an exception raised in a declaration propagates immediately to the enclosing block. The sample code has nested the failing code so that the error can be trapped.
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