OGG and firing triggers

Hi,
I am designing and implementing OGG to replicate a set of about 200 tables from a master system to two target systems. Updates to these tables only occur on the master system so this is a 1:n uni-directional situation. The master and target systems are all Oracle.
Some or all of the target tables have triggers on them. For 95% of the tables, we don't want the triggers to fire when GG replicates to the table. This is easily accomplished by using the SUPPRESSTRIGGERS subparameter of the DBOPTIONS parameter in the replicat parameter file. So, I set up one extract/pump/replicat process to replicate the data to these tables.
Of the remaining 5% of the tables, most of the time we want the triggers to fire on the target systems when data is replicated to the target table. Again this is easily accomplished by setting up another extract/pump/replicat process with DBOPTIONS NOSUPPRESSTRIGGER.
There are a couple of tables on the target systems which have more than one trigger and we want one of the triggers to fire when replicating but not the other ones. I believe that I can partly accomplish this by putting a SQLEXEC on the MAP statement for these tables which issues an ALTER TRIGGER <schema.trigger>; DISABLE. The documentation says this SQLEXEC will run before the data is replicated to the target table so the trigger will be disabled when the replication happens.
My problem is... How do I enable the trigger again once I have replicated data to the target table? I don't think it's possible to have a SQLEXEC run after the replication happens. Is that true?
I have considered simply disabling the triggers when replication starts with a standalone SQLEXEC statement that runs when replication starts and enabling them using SQLEXEC ONEXIT to enable the triggers again when replication stops. this will work but I'm not sure my customer will buy this solution.
Thanks a lot for any help you can provide.

I've figured out how to do this. Start the replicat with DBOPTIONS SUPPRESSTRIGGERS specified. Then run a standalone SQLEXEC which executes the following stored procedure call for each trigger you want to have fire: dbms_ddl.set_trigger_firing_property(<trigger_owner> '<trigger_name>', FALSE);
I have a set of eight triggers I want to fire so I created a simple stored procedure that executes this SP for each of my triggers. It could probably be done inline in the replicat parameter deck too.
Also, I have a second SP which I call using SQLEXEC ON EXIT. This disables all the triggers I enabled at the beginning.
Looking at ALL_TRIGGERS at the FIRE_ONCE column/property will tell you what state a trigger is in. Ironically, NO means the the trigger will fire and YES means it will not.

Similar Messages

After and before triggers

My doubt is about the execution of triggers
I have a table T1
create table T1
+(ID1 number(9,2) primary key,+
NAME1 VARCHAR2(100)) ;
It has following 2 rows.
insert into t1 values (1,'sandeep')
insert into t1 values (2,'tom')
commit;
I have following 4 triggers
create or replace
TRIGGER TRIGGER1_before_statement
before update on T1
begin
dbms_output.put_line('fired before statement');
END;
create or replace
trigger TRIGGER_BEFORE_EACHROW
before update on T1 for each row
begin
DBMS_OUTPUT.PUT_LINE('fired before each row');
END;
create or replace
TRIGGER TRIGGER_after_eachrow
after update ON T1
FOR EACH ROW
begin
DBMS_OUTPUT.PUT_LINE('fired trigger after eachrow');
END;
create or replace
trigger TRIGGER1_AFTER_STATEMENT
after update on T1
begin
dbms_output.put_line('fired after statement');
END;
i ran the following script
SET SERVEROUTPUT ON;
begin
update T1 set T1.ID1=1 where T1.ID1 = 2;
end;
This update statement will fail because it violates the primary key constraint on the table.
During execution of the update statement, i expect only the before statement and row triggers to fire because after triggers will be fired after execution of the statement and in this case the update execution has failed.
But the output i am getting is
fired before statement
fired before each row
fired trigger after eachrow
which means the after TRIGGER_after_eachrow has also fired but my update statement has failed and TRIGGER_after_eachrow should fire only after updating the rows.
Why this trigger was fired? If oracle processes all the triggers even if the triggerig statement fails, then why TRIGGER1_AFTER_STATEMENT was not fired.
Thanks in advance.

Hi Sandeep,
While trying to search for the answer to your after trigger execution related issue, I got below from asktom site where I got a discussion regarding the same topic.
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:29259877603106
Below is the exact question post by one member and answer by tom in it.
I thought
Here is some sample which shows that after row statement fires event though the integrity
constraint check should have failed first.
Me and my colleagues are confused with the definition found at
http://download-uk.oracle.com/docs/cd/B19306_01/server.102/b14220/triggers.htm#sthref3288
drop table emp;
drop table dept;
-- Create table
create table DEPT
ID    NUMBER not null,
name VARCHAR2(100)
alter table DEPT add primary key (ID);
create table EMP
ID      NUMBER not null,
NAME    VARCHAR2(100),
DEPT_ID NUMBER
alter table EMP
add primary key (ID);
alter table EMP
add constraint EMP_DEPT_FK foreign key (DEPT_ID)
references DEPT (ID);
create or replace trigger EMP_AFT_INS_ROW_TRG after insert on emp for each row
declare
    n number;
begin
    select 1 into n from dept where dept.id = :new.dept_id;
exception
    when no_data_found then
        raise_application_error(-20001, 'No such department');
end;
insert into dept(id, name) values (1,'First department');
commit;
insert into emp (id, name, dept_id) values (101, 'First employee', 1);
commit;
rem here I expect a foreign key violation message instead of 'No such department' application error
insert into emp (id, name, dept_id) values (102, 'Second employee', 2);
commit;
Followup   September 5, 2006 - 5pm Central time zone:
constraints technically are validated AFTER the statement executes - it is not really defined
whether a trigger will or will not fire (and if you have logic that depends on such intricate
ordering, we have a really big logic problem)
but a for each row trigger - sure, because tables are allowed to violate their constraints during
the DML, think about this:
update emp set empno = empno+1;
every row updated could temporarily violate uniqueness as there could be two empno =2, empno=3 and
so on as this goes through row by row. May be its useful to you..
Regards,
Dipali..

No commit and error triggers

Hi,
In OWB 10.1.0.4.0 , I see a parameter NO COMMIT and ERROR TRIGGERS in mapping configuration properties - code generation options. i was not able to find any details regarding this.
Can anyone tell me the function of these two parameters.?

Error Trigger - Name a procedure to be fired when map fail. You may want to execute some DDL's here.
I don't know the NO COMMIT parameter. Usualy, when you click in the parameter you can see a brief description of that parameter in the lower part of the conf. widow.
Isn't there any for this NO COMMIT?
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If yes, is there a youtube video to show how its done?
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Martin

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Hi guys,
I'm lost! The differences between port forwarding and port triggering is driving me nuts! It all seems very subtle to me. Can anyone explain to me (in a very simple way) what exactly are their differences. Thanks in advance!!

Port Forwarding
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Solved!
Go to Solution.

The PXI 6541 actually has four PFI lines which can be used for importing and exporting triggers - though as you've determined, only PFI 0 has a direct front panel connection. The others (PFI 1-3) are accessible through the Digital Data & Control port, and thus can be easily accessed when using either the CB-2162 or SMB-2163 connector block (or any similar breakout for the DDC port):
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http://www.ni.com/pdf/manuals/373660d.pdf
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Hiring and firing on same day

Hi,
I'm SAP certified fresher.I've a question.Is it possible hiring and firing on same day? If yes how? if no why?
Kindly help me.
Regards,
Prasath.

hello.
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Key-up and down triggers not firing

I have a multi-record block and want to go to the previous and next records in it when the user presses the up and down arrow keys. I thought this was default behavior, but the keys didn't do anything so I tried putting key-up and key-down triggers on the block. They don't fire at all when I press the up and down arrow keys. The debug messages confirm that nothing happens at all when these keys are pressed. I tried putting form-level triggers on, and they don't fire from that block either, although they do fire from another single-record block.
I'm thinking maybe it is just some block property that I have not set correctly, but I can't see anything obvious when looking through the properties. I have the Navigation Style set to Change Record, but have tried the other options and nothing changed. The records do cycle through using the <Tab> key.
Any help is appreciated.
Thanks,
Ben
null

I'm not running web. I went ahead and tried setting num lock off anyway, but it didn't make any difference. Thanks for the suggestion.
Ben
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by vijay kumar ([email protected]):
Are u running ur application in web?
Try the numeric arrow keys (set num lock off)
<HR></BLOCKQUOTE>
null

Query regarding creating a Custom Event and Firing.

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Please can any body tell me if I have overlooked any thing ?
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Hi Stan,
I would like to use my custom action listener rather that using the the normal actionPerformed(ActionEvent e)
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Any suggestions to fire this?
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     System.out.println("My ActionEvent triggered....");
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How to use multiple counters in the 6602 to measure cycle length, calculate delay and generate triggered pulse.

Hi,
I need to measure the cycle length of a pulse, calculate a delay based on this value, and then generate a triggered pulse with that delay value. The input and output pulses will be continuous. The best case would be to use the cycle length from one pulse in the calculated delay for the next pulse. One of my biggest problems has been getting the calculated delay value into the pulse specs.vi for the triggered output.
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Filipe,
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Before and after triggers

just can somebody clarify
when we say
create or replace trigger tn before/after insert/update/delete for each row/statement
i just want to know what i can do with a before trigger which i cannot do with a after trigger and viceversa

<BLOCKQUOTE><font size="1" face="Verdana, Arial, Helvetica">quote:</font><HR>Originally posted by sushant prabhu:
i just want to know what i can do with a before trigger which i cannot do with a after trigger and viceversa<HR></BLOCKQUOTE>
Before row triggers can modify column values (:new.column := value) before the row is originally written to disk. I don't think after row triggers can modify :new values. Before row triggers can't see the row's rowid, at least not for inserts, but after row triggers always can.
Statement triggers can modify the triggering table, but row triggers can't. Statement triggers can't tell what rows are touched, but row triggers are called once per row touched and can see :old and :new values for that row.
null

Interesting issue with Logical Standby and database triggers

We have a Logical Standby that each month we export (expdp) a schema (CSPAN) that is being maintained by SQL Apply and import (impdp)it to a 'frozen copy' (eg CSPAN201104) using REMAP_SCHEMA.
This works fine although we've noticed that because triggers on the original schema being exported have the original schema (CSPAN) hard-referenced in the definition are imported into and owned by the new 'frozen' schema but are still 'attached' to the original schema's tables.
This is currently causing the issue where the frozen schema trigger is INVALID and causing the SQL Apply to fail. This is the error:
'CSPAN201104.AUD_R_TRG_PEOPLE' is
invalid and failed re-validation
Failed SQL update "CSPAN"."PEOPLE" set "ORG_ID" = 2, "ACTIVE_IND" = 'Y', "CREATE_DT" = TO_DATE('22-JUL-08','DD-MON-RR'),"CREATOR_NM" = 'LC', "FIRST_NM" = 'Test', "LAST_PERSON" ='log'...
Note: this trigger references the CSPAN schema (...AFTER INSERT ON CSPAN.PEOPLE...)
I suspect that triggers on a SQL Apply Maintained schema in a Logical Standby do not need to be valid (since they do not fire) but what if they reference a SQL Apply schema but are 'owned' by a non-SQL Apply schema? This trigger references a SQL Apply table so it should not fire
This is 10gR2 (10.2.0.4) on 64 bit Windows.
Regards
Graeme King

OK, I've finally got around to actually test this and it looks like you are not quite correct Larry in this statement...
'Since this trigger belongs to a new schema that is not controlled by SQL Apply (CSPAN201105) it will fire. But the trigger references a schema that is controlled by SQL Apply (CSPAN) so it will fail because it has to be validated.'
My testing concludes that even though the trigger belongs to a schema CSPAN201105 (not controlled by SQL Apply) and references a schema controlled by SQL Apply - it does not fire. However it DOES need to be valid or it breaks SQL Apply.
My testing was as follows:
Primary DB
Create new EMP table in CSPAN schema on Primary
Create new table TRIGGER_LOG in CSPAN schema on Primary
Create AFTER INSERT/UPDATE trigger on CSPAN.EMP table (that inserts into TRIGGER_LOG table)
**All of the above replicates to Standby**
Standby DB
Create new table TRIGGER_LOG_STNDBY in CSPAN201105 schema on Primary
Create new trigger in CSPAN201105 schema that fires on INSERT/UPDATE on CSPAN.EMP but that inserts into CSPAN201105.TRIGGER_LOG_STNDBY table)
Primary DB
Insert 4 rows into CSPAN.EMP
Update 2 rows in CSPAN.EMP
TRIGGER_LOG table has 6 rows as expected
Standby DB
TRIGGER_LOG table has 6 rows as expected
TRIGGER_LOG_STNDBY table has **0 rows**
Re-create trigger in CSPAN201105 schema that fires on INSERT/UPDATE on CSPAN.EMP but that inserts into CSPAN201105.TRIGGER_LOG_STNDBY table) **but with syntax error**
Primary DB
Update 1 row in CSPAN.EMP
TRIGGER_LOG table has 7 rows as expected
Standby DB
SQL Apply is broken - ORA-04098: trigger 'CSPAN201105.TEST_TRIGGER_TRG' is invalid and failed re-validation

I will be working on a project to migrate from Sybase ASE (15.7) to SQL Server 2014 using Oracle golden gate........I am trying to find documentation which can guide me to use a separate box installation of OGG and how to configure it for Sybase and SQL s

Hi,
I need guide to install OGG on a separate box which will help me to migrate Sybase to SQL server.
Viral Dave

hi - just an fyi
we have SQL Server 2012 and from my reads and understanding OGG supports SQL Server up to 2008. not to say it wouldn't work on higher versions if installed. in the link above check out the SQL Server installation chapter. before purchasing the license I would contact Oracle.
maybe someone here has installed it on a higher version and got it to work. we are currently working on setting up OGG to work on Oracle to Oracle servers.

OGG and firing triggers

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