Where current of statement is not updating correct row oracle Granny dating for free chat
if you are in extent N and N 1 is being used still (or with AUM N 1 contains information that cannot yet be overwritten because of the undo_retention), we'll allocate a new extent and stick it in there.
I still am a bit unclear what makes the RBS advance.
That user is updating\inserting\deleting a lot of database records without committing.
Oracle clears out any unneeded transactions in the rollback segment but eventually it fills up and the error occurs. User B logs into the data base and is updating\inserting\deleting a lot of database records, but is committing every 100 records.
Oracle clears out any unneeded transactions in the rollback segment but eventually it fills up and the error occurs.
Oracle cannot clear out any of user B's transaction since they are needed to maintain user A's consistent view of the database, which is before user B logged in.
MAY cause A to experience an ORA-1555 if A is performing a long running query against the object(s) B is modifying. It is when it is overwritten that user A will get the ORA-1555.
An ORA-1555 is never about running out of rollback.
Here if I sized the rollback so that I had 10, 10meg segments (not so they could GROW to 10meg but that they are starting at 10meg) we would wrap maybe every 20minutes now. Therefore, if all the RBS are very large with no wraps during a query, 1555 is mute Thanks Therefore does the circle is established by min extents.These rollback segments COULD grow to 100meg each if we let them (in this example) however, they will NEVER grow unless you get a big transaction.If your database does lots of little transactions, the RBS will never grow on their own. Now, someone needs to run a query that will take 5 minutes. What will be the condition at which the rollback segment wraps to extent 1.It is about rollback that was generated being overwritten.A select statement will not cause rollback to be "held".