RE: oracle locking question

John,

I just ran across this the other day.

The answer is, you must perform a commit or rollback to release the locks. You can see this by doing something as simple as

update table
set column_name='a value'
where pk_column=0; <== make sure there is no record for this value.

then, look for table locks. you will see that a lock is being held against the table because of the above update statement. I'm not sure of the impact here, but a lock is a lock.

maybe someone else on the list can give us a better answer of what is being held.

Tom Mercadante
Oracle Certified Professional

-----Original Message-----
Sent: Wednesday, January 15, 2003 11:29 AM To: Multiple recipients of list ORACLE-L

> When doing an update that fails to update any rows, does a Rollback or a
> Commit need to be done at the end?
>
> We have a problem with some code where an update is attempted, but after
> the SQL command has run SQL%ROWCOUNT = 0 so no rows were updated. The
> program does not then perform a Commit or Rollback. This appears to be
> causing some locking problems, but how can any thing be locked if no rows
> were updated?
>

 Platform is 8.1.7

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