Oracle Trigger Error Log

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Oracle Trigger After Insert Example

them; it only takes a minute: Sign up oracle trigger log up vote 1 down vote favorite 1 I have a trigger which is supposed to test whether an individual punching a time clock has punched their card within the

Oracle Triggers Tutorial

last 5 minutes. If they have not their info should be left to go on to the table clk_data, otherwise a record should be made in the log table utl_logbook and the insert to clk_data should be aborted. When I run a good punch the insert works as advertised. When it is a bad punch (within 5 minutes of the last punch) I get the following error: SQL Error: ORA-20101: Too Soon ORA-06512: at "TRUTRACK.INSERT_CLK_DATA", line 14 ORA-04088: error oracle trigger after update during execution of trigger 'TRUTRACK.INSERT_CLK_DATA' The transaction is stopped but I get no recording of it in utl_logbook. The trigger code: create or replace TRIGGER "INSERT_CLK_DATA" BEFORE INSERT ON clk_data FOR EACH row BEGIN DECLARE qty INTEGER := 0; BEGIN SELECT COUNT(*) INTO qty FROM clk_data WHERE clk_time BETWEEN (:new.clk_time - 5/(24*60)) AND (:new.clk_time + 5/(24*60)) AND :new.payroll = clk_data.payroll; IF qty > 0 THEN INSERT INTO utl_logbook (time, source, message) VALUES (sysdate, 'INSERT_CLK_DATA', 'Clock punch within restricted window. Payroll ID:' || :new.payroll || ' Time: ' || :new.clk_time || ' Type: ' || :new.type); RAISE_APPLICATION_ERROR(-20101, 'Too Soon'); END IF; END; END; oracle logging triggers share|improve this question edited Oct 9 '12 at 17:25 Nicholas Krasnov 19.2k42849 asked Oct 9 '12 at 17:23 user1732495 813 add a comment| 2 Answers 2 active oldest votes up vote 2 down vote accepted This is can be one of those rare cases when you can employ pragma autonomous_transaction. It will allow you commit without affecting your main transaction. Use it with caution. Find out more about autonomous transactions and autonomous_transaction pragma Here is an example: -- our error logging table create table tb_log( msg varchar2(123) ) / -- our working table create table tb_table( col11 number ) / -- procedure that is going to log errors NK@XE> create or replace procedure log_error(p_msg in varchar2) 2 is 3 pragma autonomous_transaction; 4 begin 5 insert into tb_log(msg) 6 values(p_msg); 7

a PL/SQL unit that is stored in the database and (if it is in the enabled state) automatically executes ("fires") in response to a specified event.

Types Of Triggers In Oracle

A trigger has this structure: TRIGGER trigger_name triggering_event [ trigger_restriction ] BEGIN new or old references not allowed in table level triggers triggered_action; END; The trigger_name must be unique for triggers in the schema. A trigger can have ora-04091 the same name as another kind of object in the schema (for example, a table); however, Oracle recommends using a naming convention that avoids confusion. If the trigger is http://stackoverflow.com/questions/12805181/oracle-trigger-log in the enabled state, the triggering_event causes the database to execute the triggered_action if the trigger_restriction is either TRUE or omitted. The triggering_event is associated with either a table, a view, a schema, or the database, and it is one of these: DML statement (described in "About Data Manipulation Language (DML) Statements") DDL statement https://docs.oracle.com/database/121/TDDDG/tdddg_triggers.htm (described in "About Data Definition Language (DDL) Statements") Database operation (SERVERERROR, LOGON, LOGOFF, STARTUP, or SHUTDOWN) If the trigger is in the disabled state, the triggering_event does not cause the database to execute the triggered_action, even if the trigger_restriction is TRUE or omitted. By default, a trigger is created in the enabled state. You can disable an enabled trigger, and enable a disabled trigger. Unlike a subprogram, a trigger cannot be invoked directly. A trigger is invoked only by its triggering event, which can be caused by any user or application. You might be unaware that a trigger is executing unless it causes an error that is not handled properly. A simple trigger can fire at exactly one of these timing points: Before the triggering event executes (statement-level BEFORE trigger) After the triggering event executes (statement-level AFTER trigger) Before each row that the event affects (row-level BEFORE trigger) After each row that the event affects (row-level AFTER trigger) A compound trigger can fire at multiple timing points. For information ab

Using Triggers" Designing Triggers Triggers are stored procedural code that is fired automatically when specified events happen in the database. Triggers are associated with tables, views, or https://docs.oracle.com/cd/B28359_01/appdev.111/b28843/tdddg_triggers.htm events. Unlike procedures and functions, triggers cannot be invoked directly. Instead, Oracle http://www.oracle.com/technetwork/testcontent/o58asktom-101055.html Database implicitly fires triggers when a triggering event occurs, regardless of the user or application. You may never be aware that a trigger is operating unless its operation causes an error that is not handled properly, when the event that fired the trigger fails. The correct use of triggers oracle trigger enables you to build and deploy applications that are more robust, secure, and that use the database more effectively. These gains are possible because triggers can deliver the following features: Data integrity checking and enforcement Auditing and logging Complex business logic modeling Transaction validity checking and enforcement Derived column generation Table modification enabling and restriction You can use triggers to oracle trigger after enforce low-level business rules that are inherent to the database, and are therefore common for all client applications. For example, you may have several client applications that access the employees table in the hr schema. If a trigger on that table ensures the proper format of all data added to the table, this business logic does not have to be reproduced and maintained in every client application. Because the trigger cannot be circumvented by the client application, the business logic stored in the trigger is used automatically. Each trigger has the following general form: TRIGGER trigger_name triggering_statement [trigger_restriction] BEGIN triggered_action; END; A trigger has four main parts: A trigger name, which must be unique with respect to other triggers in the same schema. Trigger names do not need to be unique with respect to other schema objects (tables, views, and procedures); however, Oracle recommends that you adopt a consistent naming convention to avoid confusion. A triggering statement is the event that initiates the firing of the trigger. These events include DML statements (INSERT, UPDATE, and DELE

TECHNOLOGY: Ask Tom The Trouble with Triggers By Tom Kyte Our technologist looks at trigger maintenance and implementation challenges. Those of you who frequent the asktom.oracle.com Web site know that I have an aversion to triggers. Once upon a time, a long time ago, I thought triggers were the coolest thing ever and I used (and abused) them heavily. Now, whenever possible, I will go very far out of my way to avoid a trigger. I have two primary reasons for avoiding triggers: They cause a long-term maintenance headache. Triggers are tiny bits of code that are not run directly by anything—they just “happen” as a side effect of some other operation. Because their work is done as a side effect, people frequently forget that triggers are there. (And reviewing code for all side effects is difficult, if not impossible.) Most times I see them implemented, they are implemented incorrectly. Triggers contain huge errors in logic that the developer didn’t see or anticipate, usually because that person didn’t expect the problems encountered. Maintenance Headache Hopefully the first reason to avoid triggers, the maintenance headache, is fairly easy to see. Suppose you are working on someone else’s project, because you have inherited someone else’s work. Say you have a bit of code or better yet a stored procedure that represents a transaction, and you read it. You might presume, “I understand what this does. I get it.” But if you are on a system laden with triggers all over the place, you won’t have gotten it at all—you’ll have gotten it wrong, at best. Triggers cause side effects. They do things out of the mainstream. When you run an update and see “1 row processed,” 500 other things may also have happened. More than once, I’ve received an e-mail similar to the