July 29, 2006 at 12:21 am · Filed under Database
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If you’re a freak who work around with Oracle as backend, you would face the sitution where the oracle temporary space would be exhausted.
The usage temporary tablespace can’t be found out exactly using DBA_FREE_SPACE. To find out the true value of temporary table space we may need to use V$TEMP_SPACE_HEADER data dictonary.
SELECT tablespace_name, SUM(bytes_used), SUM(bytes_free)
FROM V$temp_space_header
GROUP BY tablespace_name;
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July 26, 2006 at 8:21 am · Filed under Database
if you’re wondering why particular query or procedure is talking a long such a long time to run; then make sure you check out whether the object you’re accessing is locked or not.
there are quite a few dba views available to make our task less complicated. you can use the below query which will return you the list of locked objects.
SELECT
c.owner,
c.object_name,
c.object_type,
b.sid,
b.serial#,
b.status,
b.osuser,
b.machine
FROM
v$locked_object a ,
v$session b,
dba_objects c
WHERE
b.sid = a.session_id
AND
a.object_id = c.object_id;
you can now decide whether to kill the job/ process or someother roundaway to remove the lock obtained on the particular object.
