How to solove this mutation triggers error
I have a remove after trigger on a table with 2 columns uid and appid
I check after deletion if there is no other entries in this table with the same uid, I update a flag in another table that also has the uid column.
But I get an error of mutation.
Create or replace trigger abc
after deletion on < tab1 >
referencing old as old and new like new
for each line
declare iCount number (9);
Start
Select count (*) from < tab1 > iCount
where uid =:old.uid;
If iCount = 0 then
Update flag set < tab2 > = ' no where uid =:old.uid;
end if;
end;
/
What I'm doing wrong here and how to fix it?
Thank you
YG
end;
Hello
When you create a trigger on a table, you cannot edit/query this table until the trigger/a function completed.
You can use
(1) transaction of Pragma autonomous
(2) instead of row-level trigger, you have statement-level trigger
(3) to 11 g, try with COMPOSITE trigger
Tags: Database
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