Mutating simply means you're trying to access the
table that you're trigger is currently firing on (in a
row level trigger).
The basic workaround is typically...
before-statement-level
- initialise a PL/SQL table
before-row-level
- store information you need in the PL/SQL table, eg
rowid's of rows being inserted
after-statement-level
- loop thru the PL/SQL table and take any action you
need to do
hth
connor
--- Leslie Lu <[EMAIL PROTECTED]> wrote: > Hi all,
>
> I got ORA-04091: table mutating problem. Here is
> the
> case: select from table A and insert them into table
> B. A trigger is used to check that new DATE must be
> later than every DATE in B. So I open an cursor,
> loop
> through cursor to compare new DATE value.
>
> If I tested using hard coded value, the trigger
> works;
> if do a insert ... select, I got ORA-04091.
>
> I looked through metalink, didn't see anything that
> can help.
>
> Thank you in advance.
>
> Leslie
>
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