RE: Temp Tablespace Group, Adding Tempfile and Resumable Transaction Issue?

From: Mark W. Farnham <mwf_at_rsiz.com>
Date: Wed, 6 Jan 2010 13:41:08 -0500
Message-ID: <1D980DA2494D4F888BEE1FFC79F29E14_at_rsiz.com>

I haven't seen this before, but it looks suspicious that:

Wed Jan 6 06:55:15 2010
alter tablespace temp_sample2 add tempfile
'/r07/oradata/martb/temp_sample2_06.dbf' size 10000M autoextend on next 5M
maxsize 51200M
Wed Jan 6 06:55:43 2010
Completed: alter tablespace temp_sample2 add tempfile
'/r07/oradata/martb/temp_sample2_06.dbf' size 10000M autoextend on next 5M
maxsize 51200M

took 28 seconds (seems reasonable), while

Wed Jan 6 06:56:21 2010
alter tablespace temp_sample3 add tempfile
'/r07/oradata/martb/temp_sample3_06.dbf' size 10000M autoextend on next 5M
maxsize 51200M
Wed Jan 6 06:56:21 2010
Completed: alter tablespace temp_sample3 add tempfile
'/r07/oradata/martb/temp_sample3_06.dbf' size 10000M autoextend on next 5M
maxsize 51200M
Wed Jan 6 06:56:21 2010
statement in resumable session 'User DM_OWNER(194), Session 771, Instance 1' was aborted

all took place in the same second. While I can't prove it, it seems like a timing error of announcing the availability of the file before it's actually ready. (meaning a bug in Oracle.) In the meantime between now and figuring out whether this is really a bug and if Oracle can fix it for your release, I'm guessing the workaround to raise the maxsize of the last existing tablespace file of each file in the group enough to give breathing room while you add the other files would work. Of course you've probably got standard sizes that this would screw up, but you could fix that at your next maint. window with little hassle since it is temp. It would also probably work to just raise the maxsize if you have room on the device and add files later.

Good luck. I'm all ears if anyone knows all about this. I'm also guessing this is not trivial to reproduce on demand.

mwf

From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Kellyn Pedersen
Sent: Wednesday, January 06, 2010 12:00 PM To: oracle Freelists
Subject: Temp Tablespace Group, Adding Tempfile and Resumable Transaction Issue?

Hello Folks,
I had a large adhoc parallel process running in one of my older marts.  The database is set up with resumable transactions and this process' slaves went into timeout when it ran out of temp tablespace striped in my temp tablespace group.
 
I added datafiles first to the temp_sample1, which it was complaining about, but knew that it was striped across and would need space in the others or I would have more parallel slaves going into timeout.  On the third tablespace of the group, I added the file bolded below and then one of the processes aborted, sending the user this error:
 
ERROR at line 1:

ORA-12801: error signaled in parallel query server P024
ORA-01157: cannot identify/lock data file 1042 - see DBWR trace file
ORA-01110: data file 1042: '/r07/oradata/martb/temp_sample3_06.dbf'

 
Anyone seen this before?  Is there a known issue with parallel processes/resumable transactions and temp tablespace groups, (all, or some of these combined) that I'm unaware of and can't fine out there?   
The output from the alert log, the dbwr trace file seems nowhere to be found!:
 
Wed Jan  6 06:54:16 2010
alter tablespace temp_sample1 add tempfile
'/r07/oradata/martb/temp_sample1_06.dbf' size 10000M autoextend on next 5M
maxsize 51200M
Wed Jan  6 06:54:17 2010
Completed: alter tablespace temp_sample1 add tempfile
'/r07/oradata/martb/temp_sample1_06.dbf' size 10000M autoextend on next 5M
maxsize 51200M
Wed Jan  6 06:54:18 2010
statement in resumable session 'User DM_OWNER(194), Session 693, Instance 1' was resumed
Wed Jan  6 06:54:18 2010
statement in resumable session 'User DM_OWNER(194), Session 572, Instance 1' was resumed
Wed Jan  6 06:54:18 2010
statement in resumable session 'User DM_OWNER(194), Session 704, Instance 1' was resumed
Wed Jan  6 06:54:18 2010
statement in resumable session 'User DM_OWNER(194), Session 726, Instance 1' was resumed
Wed Jan  6 06:55:15 2010
alter tablespace temp_sample2 add tempfile 'r07/oradata/martb/temp_sample2_06.dbf' size 10000M autoextend on next 5M maxsize 51200M
Wed Jan  6 06:55:15 2010
alter tablespace temp_sample2 add tempfile
'/r07/oradata/martb/temp_sample2_06.dbf' size 10000M autoextend on next 5M
maxsize 51200M
Wed Jan  6 06:55:43 2010
Completed: alter tablespace temp_sample2 add tempfile
'/r07/oradata/martb/temp_sample2_06.dbf' size 10000M autoextend on next 5M
maxsize 51200M
Wed Jan  6 06:56:21 2010
alter tablespace temp_sample3 add tempfile
'/r07/oradata/martb/temp_sample3_06.dbf' size 10000M autoextend on next 5M
maxsize 51200M
Wed Jan  6 06:56:21 2010
Completed: alter tablespace temp_sample3 add tempfile
'/r07/oradata/martb/temp_sample3_06.dbf' size 10000M autoextend on next 5M
maxsize 51200M
Wed Jan  6 06:56:21 2010
statement in resumable session 'User DM_OWNER(194), Session 771, Instance 1' was aborted
Kellyn Pedersen
Multi-Platform DBA
I-Behavior Inc.
http://www.linkedin.com/in/kellynpedersen  
"Go away before I replace you with a very small and efficient shell script..."

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Received on Wed Jan 06 2010 - 12:41:08 CST