Can you share the full ALTER TABLE syntax used?
Schema names and table names aren't important, please just mask them as
you wish, but I'm curious what is used for clauses like UPDATE GLOBAL
INDEXES (and are there any global indexes?) or WITH/WITHOUT VALIDATION, etc?
On 9/11/2023 11:13 AM, Ls Cheng wrote:
Hi
Running 19.15.
I have some batch processes which run exchange partition commands then run some ETL, sometimes the exchange partition takes minutes instead of seconds and the ALTER is waiting for the library cache lock. From ASH we can see that the blocking sessions are running queries against the partition. I tried to reproduce the issue but in my tests the exchange partition runs successfully and there is no library cache lock while the table is being queried.
So I wonder what is exactly causing library cache lock to the ALTER TABLE exchange partition?
Thanks
