Hot Network Questions Why don't browser DNS caches mitigate DDOS attacks on DNS providers? Host of new information that I have gathered from your post. –anudeepks Mar 31 '15 at 10:34 add a comment| Your Answer draft saved draft discarded Sign up or log The New UTL_CALL_STACK Package The UTL_CALL_STACK package provides information about currently executing subprograms. Where is the kernel documentation? http://back2cloud.com/pl-sql/pl-sql-error-stack.php
SQL> There is very little you can do with the backtrace, other than reordering it. x x) has a type, then is the type system inconsistent? Some time ago I thought that PHP was the worst, but well, things change."If you think you're smart and wise enough to make that kind of judgement about PL/SQL and PHP It's not so readable since it doesn't report neither the table, the column and the value it tried to write. his explanation
True to the nature of all things called "UTILITY", it really contains pretty much random things that you wouldn't expect there🙂 Everytime you read an excellent article and don't share it, On the other hand, we got this information by letting the exception go unhandled. So, here's how you get the stack trace:declare x number;begin x := 1 / 0; dbms_output.put_line(x);exceptionwhen others then dbms_output.put_line(SQLERRM); dbms_output.put_line(dbms_utility.format_error_backtrace);end;Output:ORA-01476: divisor is equal to zeroORA-06512: at line 5And it took them source codeThe source code for the examples in this article can be downloaded from here.Adrian Billington, June 2004Back to Top oracle-developer.net 2002-2016 copyright © Adrian Billington all rights reserved | original
current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. SET SERVEROUTPUT ON EXEC test_pkg.proc_1; ***** Call Stack Start ***** Depth Lexical Line Owner Edition Name . For example, using the bt.info function, the exception section of proc3 now looks like the procedure in Listing 4. Utl_call_stack Yes or No?
Consider this simple chain of program calls in Listing 1: procedure proc3 calls proc2 calls proc1 , at which point proc1 raises the NO_DATA_FOUND exception. 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. In many applications, however, we work to avoid unhandled exceptions. http://www.oracle.com/technetwork/issue-archive/2014/14-jan/o14plsql-2045346.html Newer Post Older Post Home Subscribe to: Post Comments (Atom) Tags java (18) open source (10) software development (10) tips (10) tools (10) windows (10) howto (8) unix (7) hawkscope (6)
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 Dbms_utility Backtrace EXEC plch_pkg.proc1 a. Line 14 calls the LEXICAL_DEPTH function to display the depth in the stack of each entry. Having upgraded to Oracle Database 10g, I can now revisit my proc3 procedure and replace the call to FORMAT_ERROR_STACK with FORMAT_ERROR_BACKTRACE , as shown in Listing 2.
Follow Blog via Email Enter your email address to follow this blog and receive notifications of new posts by email. If you want that exception to propagate all the way to the outermost PL/SQL block, it will have to be re-raised within each exception handler in the stack of blocks. How To Find Which Line Error Was Raised In Oracle Let's revisit the error-handling behavior available to programmers in Oracle9i Database. Oracle Call Stack Trace SQL> BEGIN 2 will_error(); 3 EXCEPTION 4 WHEN OTHERS THEN 5 DBMS_OUTPUT.PUT_LINE( SQLERRM ); 6 DBMS_OUTPUT.PUT_LINE( DBMS_UTILITY.FORMAT_ERROR_BACKTRACE ); 7 END; 8 / ORA-06501: PL/SQL: program error ORA-06512: at "SCOTT.WILL_ERROR", line 3
Hmmm... Depth Number --------- --------- --------- --------- --------- -------------------- 5 0 1 __anonymous_block 4 1 5 TEST TEST_PKG.PROC_1 3 1 10 TEST TEST_PKG.PROC_2 2 1 15 TEST TEST_PKG.PROC_3 1 0 13 TEST This shows the propagation of the exception, which allows you to identify the actual line that caused the problem. Instead, you can use PL/SQL conditional compilation to obtain that information. Format_error_stack Vs Format_error_backtrace
How to pass files found by find as arguments? 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. I can't decide whether to laugh or to cry...On a good note, since Oracle 10g you can use DBMS_UTILITY.FORMAT_ERROR_BACKTRACE function to get a string representation of stack trace with procedure names Get More Info SQL> BEGIN 2 EXECUTE IMMEDIATE 'garbage'; 3 END; 4 / BEGIN * ERROR at line 1: ORA-00900: invalid SQL statement ORA-06512: at line 2 There are many PL/SQL developers who consider
DBMS_UTILITY.CURRENT_INSTANCE DBMS_UTILITY.DATA_BLOCK_ADDRESS_BLOCK DBMS_UTILITY.DATA_BLOCK_ADDRESS_FILE DBMS_UTILITY.DB_VERSION DBMS_UTILITY.EXEC_DDL_STATEMENT DBMS_UTILITY.FORMAT_CALL_STACK DBMS_UTILITY.FORMAT_ERROR_BACKTRACE DBMS_UTILITY.FORMAT_ERROR_STACK DBMS_UTILITY.GET_CPU_TIME DBMS_UTILITY.GET_DEPENDENCY DBMS_UTILITY.GET_HASH_VALUE DBMS_UTILITY.GET_PARAMETER_VALUE DBMS_UTILITY.GET_TIME DBMS_UTILITY.INVALIDATE DBMS_UTILITY.IS_CLUSTER_DATABASE DBMS_UTILITY.IS_PARALLEL_SERVER DBMS_UTILITY.MAKE_DATA_BLOCK_ADDRESS DBMS_UTILITY.NAME_RESOLVE DBMS_UTILITY.NAME_TOKENIZE DBMS_UTILITY.PORT_STRING DBMS_UTILITY.TABLE_TO_COMMA DBMS_UTILITY.VALIDATE DBMS_WORKLOAD_CAPTURE DBMS_WORKLOAD_REPLAY DBMS_WORKLOAD_REPOSITORY DBMS_XPLN UTL_FILE UTL_HTTP UTL_RAW UTL_REF Keyword Dbms_utility.format_error_backtrace 11g It Depends! Grayscale not working in simple TikZ Story about crystal flowers that stop time?
SELECT ...EXCEPTION WHEN NO_DATA_FOUND THEN ... -- Which SELECT statement caused the error?END;Normally, this is not a problem. The format_call_stack_12c procedure in Listing 2 does precisely this. The developer of the application might even like to display that critical information to the users so that they can immediately and accurately report the problem to the support staff. What Are The Methods There In Save Exceptions In Oracle Just the Line Number, Please In a real-world application, the error backtrace could be very long.
CURRENT_EDITION : The edition of the subprogram associated with the current call. Why do jet engines smoke? Listing 3 shows an example of such an occurrence. Therefore, an important distinction needs to be made between application code that needs to be logged and that which doesn't.
SET SERVEROUTPUT ON EXEC test_pkg.proc_1; ***** Backtrace Start ***** Depth BTrace BTrace . How common is the usage of yous as a plural of you? CREATE OR REPLACE PACKAGE BODY plch_pkg IS PROCEDURE proc1 IS PROCEDURE nested_in_proc1 IS BEGIN DBMS_OUTPUT.put_line ( UTL_CALL_STACK.CONCATENATE_SUBPROGRAM ( UTL_CALL_STACK.SUBPROGRAM (1))); END; BEGIN nested_in_proc1; END; END plch_pkg; / c. BACKTRACE_UNIT : Subprogram name associated with the current call.
The only way to identify the actual statement was by removing the WHEN OTHERS so Oracle could tell me the correct line number. At last! Finally, with the release of 10g, Oracle has added provision for PL/SQL developers to trap AND log exceptions accurately for the first time. SET SERVEROUTPUT ON EXEC test_pkg.proc_1; ***** Backtrace Start ***** Depth BTrace BTrace .
This means that if you want to take advantage of DBMS_UTILITY.FORMAT_ERROR_BACKTRACE , take one of the following two approaches: Call the backtrace function in the exception section of the block in He is the author of nine books on PL/SQL (all from O'Reilly Media, Inc.), including Oracle PL/SQL Best Practices and Oracle PL/SQL Programming . Examples CREATE OR REPLACE PROCEDURE Log_Errors ( i_buff in varchar2 ) IS g_start_pos integer := 1; g_end_pos integer; FUNCTION Output_One_Line RETURN BOOLEAN IS BEGIN g_end_pos := Instr ( i_buff, Chr(10), g_start_pos Database as a Storage (DBaaS) vs.
And, even worse, you do not see the name of the subprogram within the package in which the error occurred. Code Listing 3: Re-raising exceptions to the outermost block in the stack CREATE OR REPLACE PROCEDURE proc1 IS BEGIN DBMS_OUTPUT.put_line ('running proc1'); RAISE NO_DATA_FOUND; EXCEPTION WHEN OTHERS THEN DBMS_OUTPUT.put_line ( 'Error It has always been possible in PL/SQL to identify the source of an exception in a block of code; i.e. I then re-raise the same exception using the RAISE statement.