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Pl Sql Print Error Stack
I then use the format_call_stack_12c procedure (in Listing 2) in the pkg.do_stuff procedure and execute that procedure, as shown in Listing 3. CREATE OR REPLACE PROCEDURE display_backtrace AS BEGIN DBMS_OUTPUT.put_line('***** Backtrace Start *****'); DBMS_OUTPUT.put_line(DBMS_UTILITY.format_error_backtrace); DBMS_OUTPUT.put_line('***** Backtrace End *****'); END; / -- Test package to show a nested call. How do I find a research assistant positions (life science) in USA if you're an international student and outside of USA now? Is this alternate history plausible? (Hard Sci-Fi, Realistic History) How can I copy and paste text lines across different files in a bash script? click site
SQL> BEGIN 2 EXECUTE IMMEDIATE 'garbage'; 3 EXCEPTION 4 WHEN OTHERS THEN 5 DBMS_OUTPUT.PUT_LINE( SQLERRM ); 6 RAISE; 7 END; 8 / ORA-00900: invalid SQL statement BEGIN * ERROR at line But you'd need to manually interpret the trace contents and find where/what the binds are. At last! Just use PLOG and that, pretty much, gets everything you need. this content
Pl Sql Call Stack
Hmmm... I want to... by Tanel Poder Posted on February 14, 2010 I have written the first article to the troubleshooting section of my new website tech.E2SN.com: It's about a very valuable Oracle troubleshooting tool When your application raises an error somewhere deep down in the call stack, you don't get immediate information about the exact source of the error.
SQL> CREATE OR REPLACE PROCEDURE p2 2 IS 3 BEGIN 4 DBMS_OUTPUT.put_line ('in p2'); 5 DBMS_OUTPUT.put_line ('calling p1'); 6 p1; 7 END; 8 / Procedure created. Each stack contains depths (locations), and you can ask for the information at a certain depth in each of the three types of stacks made available through the package. ERROR_NUMBER : The error number associated with the current line in the error stack. Utl_call_stack to know the precise point at which a block of code failed.
SQL> For more information see: UTL_CALL_STACK DBMS_UTILITY SQLERRM Hope this helps. How To Find Which Line Error Was Raised In Oracle The first line of the stack is where the exception was raised. Story about crystal flowers that stop time? http://www.oracle.com/technetwork/issue-archive/2014/14-jan/o14plsql-2045346.html The only difference is that the DBMS_UTILITY.FORMAT_ERROR_STACK function appends a line feed!
Thus, you can call DBMS_UTILITY.FORMAT_ERROR_BACKTRACE within an exception section at the top level of your stack and still find out where the error was raised deep within the call stack. Dbms_utility.format_error_backtrace 11g The DBMS_UTILITY.FORMAT_ERROR_STACK function differs from SQLERRM in two ways: It can return an error message as long as 1,899 characters, thereby avoiding (or at least making extremely unlikely) truncation issues when In many applications, however, we work to avoid unhandled exceptions. The implementation of this function is straightforward; the most important thing to keep in mind when writing utilities like this is to keep the code flexible and clearly structured.
How To Find Which Line Error Was Raised In Oracle
SQL> CREATE PROCEDURE will_error AS 2 BEGIN 3 RAISE PROGRAM_ERROR; 4 END; 5 / Procedure created. SQL> BEGIN 2 EXECUTE IMMEDIATE 'garbage'; 3 EXCEPTION 4 WHEN OTHERS THEN 5 DBMS_OUTPUT.PUT_LINE( SQLERRM ); 6 DBMS_OUTPUT.PUT_LINE( DBMS_UTILITY.FORMAT_ERROR_BACKTRACE ); 7 RAISE; 8 END; 9 / ORA-00900: invalid SQL statement ORA-06512: Pl Sql Call Stack Here's some Daily WTF material from the official PL/SQL User's Guide and Reference. ----- WTF EXCERPT START -----Using Locator Variables to Identify Exception LocationsUsing one exception handler for a sequence of Oracle Call Stack Trace SUBPROGRAM : Subprogram name associated with the current call.
It's not so readable since it doesn't report neither the table, the column and the value it tried to write. http://setiweb.org/pl-sql/pl-sql-exception-print-error-message.php Therefore, to ensure that the exception is logged, the following "pseudo-approach" is taken by many developers (note that in the simple examples that follow I've substituted DBMS_OUTPUT.PUT_LINE for an application logging In each call to BACKTRACE_UNIT and BACKTRACE_LINE, I pass the value returned by the ERROR_DEPTH function. This shows the propagation of the exception, which allows you to identify the actual line that caused the problem. Format_error_stack Vs Format_error_backtrace
The format_call_stack_12c procedure in Listing 2 does precisely this. CREATE OR REPLACE PROCEDURE display_call_stack AS l_depth PLS_INTEGER; BEGIN l_depth := UTL_CALL_STACK.dynamic_depth; DBMS_OUTPUT.put_line('***** Call Stack Start *****'); DBMS_OUTPUT.put_line('Depth Lexical Line Owner Edition Name'); DBMS_OUTPUT.put_line('. In this example, the error ORA-06502: PL/SQL: numeric or value error was raised at "HR.P1", line 5. navigate to this website Code Listing 3: The pkg.do_stuff procedure calls the format_call_stack_12c procedure SQL> CREATE OR REPLACE PACKAGE pkg 2 IS 3 PROCEDURE do_stuff; 4 END; 5 / SQL> CREATE OR REPLACE PACKAGE BODY
This function closed a significant gap in PL/SQL functionality. What Are The Methods There In Save Exceptions In Oracle On the one hand, we should be very pleased with this behavior. This is only a replacement for the existing functionality if you need the extra level of control.
Prior to Oracle Database 10g, one could obtain this information only by allowing the exception to go unhandled.
Code Message --------- --------- -------------------- 1 ORA-00001 unique constraint (.) violated 2 ORA-06512 at "TEST.TEST_PKG", line 16 3 ORA-01422 exact fetch returns more than requested number of rows 4 ORA-06512 at Do I need to do this? EXEC plch_pkg.proc1 a. Dbms_utility Backtrace If you did want to see this information, you had to allow the exception to go unhandled, at which point the full error backtrace was displayed on the screen or was
SQL> The output from DBMS_UTILITY.FORMAT_ERROR_STACK function is fine, but there are occasional formatting errors and we can't order the output to suit our taste. Is this alternate history plausible? (Hard Sci-Fi, Realistic History) How do I "install" CentOS? This article explores the problem that this function solves and how best to use it. http://setiweb.org/pl-sql/pl-sql-print-sql-error.php This third and last article on new PL/SQL features in Oracle Database 12c Release 1 focuses on the new UTL_CALL_STACK package.
Was the Boeing 747 designed to be supersonic? Line Unit'); DBMS_OUTPUT.put_line('--------- --------- --------------------'); FOR i IN 1 .. This new function returns a formatted string that displays a stack of programs and line numbers leading back to the line on which the error was originally raised. Thank you Filippo Reply Tanel Poder says: July 28, 2015 at 8:10 pm If this particular SQL request comes in via SQL*Net, you could use SQL*Net trace (the sqlnet.ora settings or
DYNAMIC_DEPTH : The number of subprograms on the call stack, starting at the current position in the call stack, to the initial call. Code Listing 4: Revised proc3 calling bt.info CREATE OR REPLACE PROCEDURE proc3 IS BEGIN DBMS_OUTPUT.put_line ('calling proc2'); proc2; EXCEPTION WHEN OTHERS THEN DECLARE l_trace bt.error_rt; BEGIN l_trace := bt.info (DBMS_UTILITY.format_error_backtrace); raise_application_error They might, for example, take screen scrapes of their scheduling systems' output as application logs and be satisfied with the level of information demonstrated above. The following example recreates the DISPLAY_BACKTRACE procedure to use the UTL_CALL_STACK package, then re-runs the test. -- Procedure to display the call stack.
Finally, with the release of 10g, Oracle has added provision for PL/SQL developers to trap AND log exceptions accurately for the first time. I create a package specification: CREATE OR REPLACE PACKAGE plch_pkg IS PROCEDURE proc1; END plch_pkg; / Which of the choices create a body for this package so that after the following Do these physical parameters seem plausible? And I use its weakness to challenge myself to overcome them.Learning is fun ;)ReplyDeleteAnonymous10 Apr 2012, 12:16:00Indeed, the JAVA call stack is much preferrable!!!!ReplyDeleteAdd commentLoad more...
Backtrace to the Rescue In Oracle Database 10g, Oracle added DBMS_UTILITY.FORMAT_ERROR_BACKTRACE , which can and should be called in your exception handler. OWNER : The owner of the subprogram associated with the current call. One workaround is to keep track of statement numbers that were last executed before any error occurred: DECLARE v_statement_no := 0; BEGIN v_statement_no := 1; SELECT ... Generating Pythagorean triples below an upper bound How to make your world’s revolutions feel realistic?
Just a small typo: it´s v$sql_bind_capture instead of v$sql_plan_capture. SQL> In the previous example, the display order matches the DBMS_UTILITY.FORMAT_ERROR_STACK output, which reports last to first in the chain. It has always been possible in PL/SQL to identify the source of an exception in a block of code; i.e. Line Unit --------- --------- -------------------- 3 18 TEST.TEST_PKG 2 13 TEST.TEST_PKG 1 5 TEST.TEST_PKG ***** Backtrace End ***** PL/SQL procedure successfully completed.