Re: Lengthening backup

  • From: "Terry Sutton" <terrysutton@xxxxxxx>
  • To: <oracle-l@xxxxxxxxxxxxx>
  • Date: Sat, 8 Jul 2006 14:16:51 -0700

Faud,

What's an ora_i process?  The oracle processes (besides connections) I see are:
oracle@:/export/home/oracle $ ps -ef | grep ora_                                
                  
  oracle 15349     1  0   Mar 20 ?       803:07 ora_dbw2_DBNAME
  oracle 15343     1  0   Mar 20 ?        0:18 ora_pmon_DBNAME
  oracle 15365     1  0   Mar 20 ?       24:03 ora_snp0_DBNAME
  oracle 15363     1  0   Mar 20 ?        0:05 ora_reco_DBNAME
  oracle 15371     1  0   Mar 20 ?       123:15 ora_arc0_DBNAME
  oracle 15383     1  0   Mar 20 ?       116:37 ora_arc6_DBNAME
  oracle 15359     1  0   Mar 20 ?       2345:43 ora_ckpt_DBNAME
  oracle 15355     1  0   Mar 20 ?       796:49 ora_dbw5_DBNAME
  oracle 15353     1  0   Mar 20 ?       776:13 ora_dbw4_DBNAME
  oracle 15367     1  0   Mar 20 ?       15:36 ora_snp1_DBNAME
  oracle 15351     1  0   Mar 20 ?       785:47 ora_dbw3_DBNAME
  oracle 15369     1  0   Mar 20 ?       30:50 ora_snp2_DBNAME
  oracle 12533 11168  0 14:15:15 pts/7    0:00 grep ora_
  oracle 15357     1  1   Mar 20 ?       5559:09 ora_lgwr_DBNAME
  oracle 15381     1  0   Mar 20 ?       103:16 ora_arc5_DBNAME
  oracle 15347     1  0   Mar 20 ?       781:11 ora_dbw1_DBNAME
  oracle 15373     1  0   Mar 20 ?       102:51 ora_arc1_DBNAME
  oracle 15375     1  0   Mar 20 ?       119:24 ora_arc2_DBNAME
  oracle 15379     1  0   Mar 20 ?       122:43 ora_arc4_DBNAME
  oracle 15345     1  0   Mar 20 ?       793:48 ora_dbw0_DBNAME
  oracle 15361     1  0   Mar 20 ?       119:17 ora_smon_DBNAME
  oracle 15377     1  0   Mar 20 ?       103:31 ora_arc3_DBNAME
  oracle 15385     1  0   Mar 20 ?       104:06 ora_arc7_DBNAME

--Terry
  the first week  when the problem starts i would look at the ora_i process. we 
had the excact same problem with ora_i being hung and oracle spawing more ora_i 
processes until the backusp became real slow and used to crawl to a halt.
  killing the previous ora_i processes immediately solved the issues.


  ----- Original Message ----
  From: Terry Sutton <terrysutton@xxxxxxx>
  To: oracle-l@xxxxxxxxxxxxx
  Sent: Friday, July 7, 2006 2:01:16 PM
  Subject: Re: Lengthening backup


  SQL> SELECT DISTINCT(incremental_level)
     FROM rc_backup_set WHERE db_id = 435051864
     AND start_time > SYSDATE -10;
    
  INCREMENTAL_LEVEL
  -----------------

  So the incremental level is null.

  --Terry
    ----- Original Message ----- 
    From: Allen, Brandon 
    To: terrysutton@xxxxxxx ; oracle-l@xxxxxxxxxxxxx 
    Sent: Friday, July 07, 2006 11:43 AM
    Subject: RE: Lengthening backup


    The only thing I can think of that would cause such behaviour is if for 
some reason you were actually running a cumulative incremental backup.  From 
the script you've shown, that doesn't appear to be the case, but could you 
check the incremental_level of the rc_backup_set view in your recovery catalog 
and verify?



----------------------------------------------------------------------------
    From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] 
On Behalf Of Terry Sutton


    I'm having some issues with a client's RMAN backup.  They're on Oracle 
8.1.7.4, Solaris 8.  It's a weekly full backup, and they're backing up ~1.5TB 
to disk, and the longer the instance is up, the longer the backup takes. 
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