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ORA exceptions that can’t be caught by exception handler

Posted on August 12, 2021 by Sayan Malakshinov Posted in curious, Funny, oracle, PL/SQL, SQL, troubleshooting Leave a comment

I know 2 “special” exceptions that can’t be processed in exception handler:

  • “ORA-01013: user requested cancel of current operation”
  • “ORA-03113: end-of-file on communication channel”
  • and + “ORA-00028: your session has been killed” from Matthias Rogel

Tanel Poder described the first one (ORA-01013) in details here: https://tanelpoder.com/2010/02/17/how-to-cancel-a-query-running-in-another-session/ where Tanel shows that this error is based on SIGURG signal (kill -URG):

-- 1013 will not be caught:
declare
 e exception;
 pragma exception_init(e,-1013);
begin
  raise e;
exception when others then dbms_output.put_line('caught');
end;
/

declare
*
ERROR at line 1:
ORA-01013: user requested cancel of current operation
ORA-06512: at line 5
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