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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Good technical documents/references on tuning restores
I agree with Igor! ;-)
well, Paula...
you have MISSING datafiles because they are registered on your data dictionary and they were not included in your backup controlfile file at the moment of recreating the control file.
You can, re-attempt:
alter database backup controlfile to trace
include ALL you datafiles (name and path)... and then... you can drop, rename or whatever you want!
HTH
JL
> Igor Neyman, OCP DBA
>
> ineyman_at_perceptron.com
>
>
>
>
>
> -----Original Message-----
> Paula_Stankus_at_doh.state.fl.us
> Sent: Tuesday, June 03, 2003 9:05 PM
> To: Multiple recipients of list ORACLE-L
>
>
>
> 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 to handle this? Perhaps more than one
> tape subsystem would
> be better or while doing restores other backup
> utility is halted - hmmm
> - but that risks those other systems? How can I
> sell that? Hmmmm.
> Maybe I will first backup to disk. Yep, one backup
> to disk. Yep.....
>
> -----Original Message-----
> Sent: Tuesday, June 03, 2003 9:00 PM
> To: Stankus, Paula G; 'ORACLE-L_at_fatcity.com'
>
>
>
> 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 server for networker with nwadmin messages
> like "clone sets being
> created...", "other databases being backed up".
> What is the usual
> policy on concurrently running backups, cloning at
> the same time
> recovery is taking place. It appears to show a lot
> of media waiting
> events: waiting for dlt7000 tape ... of the tapes
> that I specifically
> need for this restore. Did I say: I love my
> admin...I love my
> admin....I love my admin...
>
> -----Original Message-----
> Sent: Tuesday, June 03, 2003 8:53 PM
> To: Stankus, Paula G; 'ORACLE-L_at_fatcity.com'
>
>
>
> 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
> question huh?
>
> -----Original Message-----
> Sent: Tuesday, June 03, 2003 8:46 PM
> To: Stankus, Paula G; 'ORACLE-L_at_fatcity.com'
>
>
>
> 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 RMAN shows
> it is truly still
> running.
>
> -----Original Message-----
> Sent: Tuesday, June 03, 2003 8:40 PM
> To: Stankus, Paula G; 'ORACLE-L_at_fatcity.com'
>
>
>
> Also found on monitoring performance of RMAN jobs:
> Note:144640.1 on Metalink
>
> -----Original Message-----
> Sent: Tuesday, June 03, 2003 8:36 PM
> To: Stankus, Paula G; 'ORACLE-L_at_fatcity.com'
>
>
>
> Found this white paper:
>
>
http://otn.oracle.com/deploy/availability/pdf/rman_performance_wp.pdf
>
>
> Anything better?
>
> -----Original Message-----
> Sent: Tuesday, June 03, 2003 8:33 PM
> To: Stankus, Paula G; 'ORACLE-L_at_fatcity.com'
>
>
>
> 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 bit
> Networker MML
> Using RAID 1+0
> Solaris 2.8
>
> -----Original Message-----
> Sent: Tuesday, June 03, 2003 8:28 PM
> To: Stankus, Paula G; 'ORACLE-L_at_fatcity.com'
>
>
>
> 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 doing an analyze on the RMAN catalog
> tables to improve
> performance of restore. I think it has something to
> do with how quickly
> it finds the file on tape and writes to disk.
>
> -----Original Message-----
> Sent: Tuesday, June 03, 2003 8:25 PM
> To: 'ORACLE-L_at_fatcity.com'
>
>
>
> 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 to change parameters on my
> init.ora file to use
> multiple tape io slaves to see this. Anyway, would
> like notes/docs.,
> references if you all have some.
>
> Thanks,
> Paula
>
>
-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Jose Luis Delgado INET: joseluis_delgado_at_yahoo.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Wed Jun 04 2003 - 11:54:59 CDT
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