Oracle Trigger Error Handling
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errors. The latter are called exceptions. Note: oracle trigger example The language of warning and error messages depends on the
Oracle Trigger Tutorial
NLS_LANGUAGE parameter. For information about this parameter, see Oracle Database Globalization Support Guide. Topics types of triggers in oracle Compile-Time Warnings Overview of Exception Handling Internally Defined Exceptions Predefined Exceptions User-Defined Exceptions Redeclared Predefined Exceptions Raising Exceptions Explicitly Exception Propagation Unhandled Exceptions
Triggers In Oracle 11g
Error Code and Error Message Retrieval Continuing Execution After Handling Exceptions Retrying Transactions After Handling Exceptions See Also: "Exception Handling in Triggers" "Handling FORALL Exceptions After FORALL Statement Completes" Tip: If you have problems creating or running PL/SQL code, check the Oracle Database trace files. The USER_DUMP_DEST initialization oracle trigger after update parameter specifies the current location of the trace files. You can find the value of this parameter by issuing SHOW PARAMETER USER_DUMP_DEST. For more information about trace files, see Oracle Database Performance Tuning Guide. Compile-Time Warnings While compiling stored PL/SQL units, the PL/SQL compiler generates warnings for conditions that are not serious enough to cause errors and prevent compilation—for example, using a deprecated PL/SQL feature. To see warnings (and errors) generated during compilation, either query the static data dictionary view *_ERRORS (described in Oracle Database Reference) or, in the SQL*Plus environment, use the command SHOW ERRORS. The message code of a PL/SQL warning has the form PLW-nnnnn. For the message codes of all PL/SQL warnings, see Oracle Database Error Messages. Table 11-1 summarizes the categories of warnings. Table 11-1 Compile-Time Warning Categories Category Description Example SEVERE Condition might cause unexpecte
Churchill Run-time errors arise from design faults, coding mistakes, hardware failures, and many other sources. Although you cannot
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anticipate all possible errors, you can plan to handle certain kinds
What Is Trigger In Oracle
of errors meaningful to your PL/SQL program. With many programming languages, unless you disable error checking, interview questions on triggers in oracle a run-time error such as stack overflow or division by zero stops normal processing and returns control to the operating system. With PL/SQL, a mechanism called exception handling https://docs.oracle.com/cd/E11882_01/appdev.112/e25519/errors.htm lets you "bulletproof" your program so that it can continue operating in the presence of errors. This chapter discusses the following topics: Overview of PL/SQL Error Handling Advantages of PL/SQL Exceptions Predefined PL/SQL Exceptions Defining Your Own PL/SQL Exceptions How PL/SQL Exceptions Are Raised How PL/SQL Exceptions Propagate Reraising a PL/SQL Exception Handling Raised PL/SQL https://docs.oracle.com/cd/A97630_01/appdev.920/a96624/07_errs.htm Exceptions Tips for Handling PL/SQL Errors Overview of PL/SQL Error Handling In PL/SQL, a warning or error condition is called an exception. Exceptions can be internally defined (by the run-time system) or user defined. Examples of internally defined exceptions include division by zero and 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 exceptions of your own 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. Unlike internal exceptions, 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, which can also raise predefined exceptions. To handle raised ex
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn http://stackoverflow.com/questions/15548176/pl-sql-oracle-error-handling more about Stack Overflow the company Business Learn more about hiring developers or https://www.techonthenet.com/oracle/exceptions/when_others.php posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up PL/SQL Oracle Error Handling up vote 1 down vote in oracle favorite 1 I've created a trigger that only allows a user to have 10 current placed orders. So now when the customer tries to placed order number 11 the oracle database throws back a error. Well 3 errors. ORA-20000: You currently have 10 or more orders processing. ORA-06512: at "C3283535.TRG_ORDER_LIMIT", line 12 ORA-04088: error during execution of trigger 'C3283535.TRG_ORDER_LIMIT' The top error is one I've created using: raise_application_error(-20000, triggers in oracle 'You currently have 10 or more orders processing.'); I just wondered after search and trying many ways how to change the error messages for the other two errors or even not show them all together to the user? Here is the code I've used create or replace trigger trg_order_limit before insert on placed_order for each row declare v_count number; begin -- Get current order count select count(order_id) into v_count from placed_order where fk1_customer_id = :new.fk1_customer_id; -- Raise exception if there are too many if v_count >= 10 then EXCEPTION WHEN OTHERS THEN raise_application_error(-20000, 'You currently have 10 or more orders processing.'); end if; end; Thanks a lot Richard oracle error-handling plsql share|improve this question edited Mar 21 '13 at 13:21 asked Mar 21 '13 at 12:54 Richard C 1111311 Another reason dislike triggers. Can you wrap your insert statement in a package/procedure call, trap it there, and return an error message to the collar? You don't state what programming environment this statement executes from. Can you filter the errors in the calling app? –OldProgrammer Mar 21 '13 at 13:05 I am sure this was answered (well) somewhere else... I just can't find it :-(. –Ben Mar 21 '13
Server MySQL MariaDB PostgreSQL SQLite MS Office Excel Access Word Web Development HTML CSS Color Picker Languages C Language More ASCII Table Linux UNIX Java Clipart Techie Humor Advertisement Oracle Basics Oracle Advanced Oracle Cursors Oracle Exception Handling Named Programmer-Defined Exception Named System Exception WHEN OTHERS Clause SQLCODE SQLERRM Oracle Foreign Keys Oracle Loops/Conditionals Oracle Transactions Oracle Triggers String/Char Functions Numeric/Math Functions Date/Time Functions Conversion Functions Analytic Functions Advanced Functions NEXT: SQLCODE Oracle / PLSQL: WHEN OTHERS Clause This Oracle tutorial explains how to use the Oracle WHEN OTHERS clause with syntax and examples. What is the WHEN OTHERS clause in Oracle? The WHEN OTHERS clause is used to trap all remaining exceptions that have not been handled by your Named System Exceptions and Named Programmer-Defined Exceptions. Syntax We will take a look at the syntax for the WHEN OTHERS clause in both procedures and functions. Syntax for Procedures The syntax for the WHEN OTHERS clause in a procedure is: CREATE [OR REPLACE] PROCEDURE procedure_name [ (parameter [,parameter]) ] IS [declaration_section] BEGIN executable_section EXCEPTION WHEN exception_name1 THEN [statements] WHEN exception_name2 THEN [statements] WHEN exception_name_n THEN [statements] WHEN OTHERS THEN [statements] END [procedure_name]; Syntax for Functions The syntax for the WHEN OTHERS clause in a function is: CREATE [OR REPLACE] FUNCTION function_name [ (parameter [,parameter]) ] RETURN return_datatype IS | AS [declaration_section] BEGIN executable_section EXCEPTION WHEN exception_name1 THEN [statements] WHEN exception_name2 THEN [statements] WHEN exception_name_n THEN [statements] WHEN OTHERS THEN [statements] END [function_name]; Example Here is an example of a procedure that uses a WHEN OTHERS clause: CREATE OR RE