Pl Sql Ignore Error And Continue
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program to continue to operate in the presence of errors. Topics: Overview of PL/SQL Run-Time Error Handling Guidelines for Avoiding pl sql continue after exception and Handling PL/SQL Errors and Exceptions Advantages of PL/SQL Exceptions Predefined pl sql exception in loop PL/SQL Exceptions Defining Your Own PL/SQL Exceptions How PL/SQL Exceptions Are Raised How PL/SQL Exceptions Propagate pl sql exception handling examples Reraising a PL/SQL Exception Handling Raised PL/SQL Exceptions Overview of PL/SQL Compile-Time Warnings Overview of PL/SQL Run-Time Error Handling In PL/SQL, an error condition is called an exception.
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An exception can be either internally defined (by the run-time system) or user-defined. Examples of internally defined exceptions are ORA-22056 (value string is divided by zero) and ORA-27102 (out of memory). Some common internal exceptions have predefined names, such as ZERO_DIVIDE and STORAGE_ERROR. The other internal exceptions can be given names. You can define your user defined exception in pl sql own exceptions in the declarative part of any PL/SQL block, subprogram, or package. For example, you might define an exception named insufficient_funds to flag overdrawn bank accounts. User-defined exceptions must be given names. When an error occurs, an exception is raised. That is, normal execution stops and control transfers to the exception-handling part of your PL/SQL block or subprogram. Internal exceptions are raised implicitly (automatically) by the run-time system. User-defined exceptions must be raised explicitly by RAISE statements or invocations of the procedure DBMS_STANDARD.RAISE_APPLICATION_ERROR. To handle raised exceptions, you write separate routines called exception handlers. After an exception handler runs, the current block stops executing and the enclosing block resumes with the next statement. If there is no enclosing block, control returns to the host environment. For information about managing errors when using BULK COLLECT, see Handling FORALL Exceptions (%BULK_EXCEPTIONS Attribute). Example 11-1 calculates a price-to-earnings ratio for a company. If the company has zero earnings, the division operation raises the predefined except
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Pl Sql Exception When Others
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Functions For Error Trapping Are Contained In Which Section Of A Pl/sql Block
Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 05-31-2005,01:19 AM #1 kanthbethi View Profile View Forum Posts Junior Member https://docs.oracle.com/cd/B28359_01/appdev.111/b28370/errors.htm Join Date Jun 2003 Location australia Posts 74 skip an error and continue processing Hi All I would like to skip an error and continue processing in a pl/sql block as explained below. Is it possible? SQL> create table a (x number (10), y number(10); Table created. SQL> insert into a values(1, 5); SQL> insert into a values(2, 10); SQL> insert into a values(3, 15); SQL> insert into a http://www.dbasupport.com/forums/showthread.php?47629-skip-an-error-and-continue-processing values(3, 0); SQL> insert into a values(4, 20); SQL> insert into a values(5, 25); SQL> commit; SQL> select x, y from a order by x; X Y ---------- ---------- 1 5 2 10 3 15 3 0 4 20 5 25 SQL> declare v_temp number:= 30; v_tot number; v_x number; v_y number; cursor c_temp is select x, y from a order by x; begin open c_temp; loop fetch c_temp into v_x, v_y; exit when c_temp%notfound; v_tot:=v_x+v_temp/v_y; dbms_output.put_line('Total is :'||v_tot); end loop; close c_temp; exception when others then dbms_output.put_line('Found Oracle error: '||SQLERRM); end; / Total is :7 Total is :5 Total is :5 Found Oracle error: ORA-01476: divisor is equal to zero PL/SQL procedure successfully completed. What I want to do is when it hits an error then it should throw the error out and continue processing for the rest of the rows from the cursor. Something like this: Total is :7 Total is :5 Total is :5 Found Oracle error: ORA-01476: divisor is equal to zero Total is :5.5 Total is :6.2 Is this possible? If it is then can you please explain how? Thanks rajorcl Reply With Quote 05-31-2005,02:40 AM #2 slimdave View Profile View Forum Posts Visit Homepage Foreign Script Kiddie Join Date Aug
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Ignoring Oracle ORA Errors in PL/SQL Expert Oracle Database Tips by Burleson Consulting March 21, 2015 Oracle PL/SQL provides an exception clause to allow you to stop execution of your program whenever Oracle returns a specific ORA-xxxx error. Oracle provides the generic when others clause for trapping all non-zero error codes. However, there are cases when you expect an Oracle error to be thrown, such as a PL/SQL code that creates a table, and ignores the error if the table already exists. (The ORA-00955 error below). Remember, PL/SQL is separate from the Oracle database, and whenever you call Oracle, you want to check the return code to ensure that Oracle has done what you wanted. See these important notes on PL/SQL error handling. Also note that you can handle PL/SQL exceptions when using bulk operators (forall and bulk collect) It's easy to use the built-in values with the PL/SQL exceptions clause, but this list does not cover all 1,000+ possible Oracle errors. Let's look at how to define a custom exception for an Oracle ORA- error code. Defining a custom Oracle error exception in PL/SQL Oracle has over 1,000 distinct error codes, and this is how to translate an ORA-0nnn to a SQLCODE. For example, let's assume that we want to ignore the ORA-00955 error, where a table already exists. The SQLCODE is the same as the Oracle error code with the leading ORA-000's stripped off: Oracle error SQLCODE ORA-01555 -1555 ORA-00600 -600 ORA-03113 -3113 ORA-12560 -12560 ORA-03113 -3113 etc . . . Below we trap an ORA-00955 error which translates into a -955 SQLCODE. We define a custom pragma exception TableExists) and then check this Boolean in the EXCEPTION clause: DECLARE TableExists EXCEPTION; pragma exception_init(TableExists,-955); sql_stmt varchar2(50) := 'create table temp (col1 number)'; BEGIN execute immediate sql_stmt; /*+ Ignore ORA-955 errors when the table already exists) */ EXCEPTION when TableExists then NULL; END; Here is another method for ignoring an expected non-zero return code from Oracle, using the important when others clause to abort the PL/SQL if