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RE: quckways to find block corruption

From: Mohammad Rafiq <rafiq9857_at_hotmail.com>
Date: Tue, 24 Sep 2002 11:23:23 -0800
Message-ID: <F001.004D821A.20020924112323@fatcity.com> 





Dennis,



Agreed. But when working with Oracle (not MS$) it is not very common to 
encounter block corruption frequently and you should look for corruption all 
the time. Working with Oracle databases since ver 5 (atleast 14 years now), 
I have encountered this once, 2 years back and that was a index corruption 
becuase I encountered a bug in 7.3.4.3 HP-UX (Oracle Financials 10.7) while 
rebuilding composite index with parallel clause although I was using the 
same scripts on 7.3.4.0 on NCR/AT&T Unix (again Oracle Financials 10.7) and 
never found any problem. Of course, it was tracked in alertSID.log next 
working day and I have to analyze table with cascade and dropping and 
recreating all composite indexes.



Regards


Rafiq






Reply-To: ORACLE-L_at_fatcity.com


To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
Date: Mon, 23 Sep 2002 11:38:56 -0800



Rafiq - But by then your users have experienced the corruption and you have
a crisis on your hands. I feel the idea is to find the corruption BEFORE the
users find it.



 


Dennis Williams


DBA



Lifetouch, Inc.


dwilliams_at_lifetouch.com <mailto:dwilliams_at_lifetouch.com>




-----Original Message-----



Sent: Monday, September 23, 2002 12:09 PM
To: Multiple recipients of list ORACLE-L




alertSID.log if you have any corrupted block in your database and data is
being retrieved/accessed from that block....This is the first place where
data block corruption is reported/recorded.....
Regards


Rafiq







Reply-To: ORACLE-L_at_fatcity.com


To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
Date: Mon, 23 Sep 2002 02:33:19 -0800



Hi




Doesn't  full export to /dev/null do this?




Jack




                        kommareddy
                        sreenivasa               To:       Multiple
recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
                        <kommacnu_at_yahoo.c        cc:       (bcc: Jack van
Zanen/nlzanen1/External/MEY/NL)
                        om>                      Subject:  quckways to find
block corruption
                        Sent by:
                        root_at_fatcity.com


                        23-09-2002 12:03
                        Please respond to
                        ORACLE-L









Hello all,



DB: 8i


OS: solaris 2.7



can somebody post me reply for this.



is there any quick way to find which datablocks are
corrupted in my oracle database .



( other than dbverify and rman backup. )



b'coz we have BCV backup already implemented and we
cannot do a dbv every week for 500 gig production
database .



thanks in advance,


srinivas





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Author: Mohammad Rafiq


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Author: DENNIS WILLIAMS


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Author: Mohammad Rafiq


  INET: rafiq9857_at_hotmail.com


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Received on Tue Sep 24 2002 - 14:23:23 CDT












Original text of this message













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