Title: RE: Good technical documents/references on tuning restores
10/100 Mb/sec ethernet. So, if it is slow any advice?
Thanks,
Paula
-Original Message-
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Sent: Wednesday, June 04, 2003 5:52 PM
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Subject:RE: Good technical documents/references on tuning restores
10/100 Mb/sec ethernet. So, if it is slow any advice?
Thanks,
Paula
-Original Message-
Sent: Wednesday, June 04, 2003 5:52 PM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Importance: High
That's 2.5 MB per second
Title: RE: Good technical documents/references on tuning restores
Weve had this occur before. Check
connections at the physical layer they might be loose. We changed the Ethernet cable
and it seemed to work optimally after that. The cable should ideally be better
(more insulated) than
Title: RE: Good technical documents/references on tuning restores
Check
on the server for packet loss, collisions, retransmissions if you think it is a
network problem. Also test the transfer of some binary files to see what
they benchmark at and compare that against the network RMAN
backup
Title: RE: Good technical documents/references on tuning restores
Paula,
IIRC
'MISSING' means it is in the data dictionary, but not the control file. I've
gotten that before, but haven't played that game in a while. You might be able
to 'DROP' them, but I'm not sure. Check that first
Title: RE: Good technical documents/references on tuning restores
Paula,
It was very entertaining to read this
thread -J
Did you answer all your questions?-J
Igor Neyman, OCP DBA
[EMAIL PROTECTED]
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED
Title: RE: Good technical documents/references on tuning restores
I had
this problem yesterday. not sure if what I did is correct but it seemed to
work for me.
1)
Create another tablespace (TEST)
2)
move the objects from the tablespace that has the missing files into TEST
tablespace
Title: RE: Good technical documents/references on tuning restores
Sometimes it just helps to "talk" it all out. Virtually or
otherwise.
April Wells Oracle DBA/Oracle Apps DBA Corporate Systems Amarillo Texas
You will recognize your own path when you
come upon it, because you wil
Title: RE: Good technical documents/references on tuning restores
Paula,
Have you tried backing up your controlfile to
trace, editing the trace file to get rid of the unwanted datafiles, and
reopening the database with the new edited controlfile? That should get
rid of them. Of course
-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of
[EMAIL PROTECTED]
Sent: Tuesday, June 03, 2003 11:05 PM
To: Multiple recipients of list ORACLE-L
Subject: RE: Good technical documents/references on tuning restores
Okay,
Database open and I wanted to not restore
--- Igor Neyman [EMAIL PROTECTED] wrote:
Paula,
It was very entertaining to read this thread -:-)
Did you answer all your questions?-:-)
I agree with Igor! ;-)
well, Paula...
you have MISSING datafiles because they are registered
on your data dictionary and they were not included in
Title: RE: Good technical documents/references on tuning restores
I had that problem in a 9.2.0.3 AIX4.3.3 to AIX 5L upgrade... missing
with really weird names... if you look at your tablespace sizes, the ones that
are 0 bytes are the ones that have the missing files. If you can figure
out
[EMAIL PROTECTED]
cc:
Subject:RE: Good technical documents/references on tuning restores
Okay, almost 4 minutes for a datafile that was 78168 blocks - how do I
know if this is reasonable?
Also, seems to write these files out (restore sychron.) why can't it
restore
Title: RE: Good technical documents/references on tuning restores
Also found on monitoring performance of RMAN jobs:
Note:144640.1 on Metalink
-Original Message-
From: Stankus, Paula G
Sent: Tuesday, June 03, 2003 8:36 PM
To: Stankus, Paula G; '[EMAIL PROTECTED]'
Subject: RE: Good
Title: RE: Good technical documents/references on tuning restores
Seems to be taking awfully long to read files from tape and write to disk. I allocate multiple tape channels like I do for the backup which only takes about 45 minutes. Does not seem to be spawning multiple sessions. Do I need
Title: RE: Good technical documents/references on tuning restores
See nwadmin shows parellism = 32. I am not the tape person - that is my sys admin. I don't believe they actually have 32 tapes involved only 4. Can this impact performance by setting this too high? I also notice one backup
Title: RE: Good technical documents/references on tuning restores
Okay - from my reading you don't need to have multiple tape io slaves if you are using asynch. I/O. Again, best document for perf. tuning database restores using RMAN would make mucho difference. Read old note about someone
Title: RE: Good technical documents/references on tuning restores
Did I say that throughout this restore/recovery process my tapes being mounted and unmounted while other database backups and cloning was occurring. Big duh - this has got to be slowing down the process. Any ideas on how
Title: RE: Good technical documents/references on tuning restores
Strange:
looking at v$backup_async_io found some datafiles where
active bytes per sec long-waits
2154608297
7489829297
How can I start finding the disparity?
-Original Message-
From: Stankus, Paula
Title: RE: Good technical documents/references on tuning restores
This is what I have set on my target database:
--- --- ---
backup_tape_io_slaves boolean FALSE
tape_asynch_io boolean TRUE
Version 8.1.7.4 database and RMAN catalog - 32
Title: RE: Good technical documents/references on tuning restores
SELECT SID, SERIAL#, CONTEXT,
ROUND(SOFAR/TOTALWORK*100,2) % complete,
SUBSTR(TO_CHAR(SYSDATE,'HH24:MI:SS'),1,15) Time now
FROM V$SESSION_LONGOPS
WHERE OPNAME like '%restore%';
.
showed all 100% complete but msglog from
Title: RE: Good technical documents/references on tuning restores
Found this white paper:
http://otn.oracle.com/deploy/availability/pdf/rman_performance_wp.pdf
Anything better?
-Original Message-
From: Stankus, Paula G
Sent: Tuesday, June 03, 2003 8:33 PM
To: Stankus, Paula G
Title: RE: Good technical documents/references on tuning restores
Okay, almost 4 minutes for a datafile that was 78168 blocks - how do I know if this is reasonable?
Also, seems to write these files out (restore sychron.) why can't it restore different datafiles in parallel? - stupid
Title: RE: Good technical documents/references on tuning restores
Okay,
Database open and I wanted to not restore and not reference certain index
and materia. view datafiles. Now the datafiles show up with weird
MISSING.. names. How do I clean this up?
Thanks,
paula
-Original
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