Re: ORA-00604 and ORA-01578

Hi BigP

Create a tablespace corrupt.dbf fill it with a table. Use dd to write junk in the middle of the datafile and you have a ora-1578

BigP wrote:

>Just to learn this thing , ..how can I corrupt a block in my test
>environment .
>ohhhh ..... but be ready to help me if I am not able to repair it .
>Thanks ,
>Bp
>----- Original Message -----
>To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
>Sent: Thursday, June 13, 2002 4:23 AM
>
>
>
>Is there any PERFORMANCE Overhead on Setting DB_BLOCK_CHECKING = TRUE
>in the init.ora .
>Any Best practice on this parameter Setting ?
>
>Thanks
>
>
>-----Original Message-----
>Sent: Wednesday, June 12, 2002 12:34 AM
>To: Multiple recipients of list ORACLE-L
>
>
>Resend.
>
>-----Original Message-----
>Sent: Tuesday, June 11, 2002 12:45 PM
>To: 'ORACLE-L_at_fatcity.com'
>Cc: 'peter.lee_at_honeywell.com'
>
>
>Peter - You can use the DBMS_REPAIR package included with Oracle to locate
>the corrupt blocks. If the data in the corrupted blocks is extremely
>important, you can use this to dump the block contents. Then you can change
>the blocks so Oracle will skip the corrupted blocks. Then you can export the
>table or copy the contents to another table.
>Dropping the tables and recreating it from your export is also an
>option.
>Don't forget to rebuild indexes afterward.
>Run ANALYZE TABLE VALIDATE CASCADE to find any other corrupt blocks
>in other tables.
>And turn on the init.ora parameter DB_BLOCK_CHECKING to detect any
>further corruptions before they occur.
>Good luck.
>
>-----Original Message-----
>Sent: Tuesday, June 11, 2002 12:29 PM
>To: Multiple recipients of list ORACLE-L
>
>
>I have a system when I issued a select statement, I get the following error.
>
>ORA-00604 Error Occur at recursive level 1
>
>ORA-01578 Oracle Datablock corrupted. File 6 Block 2853
>
>ORA-01110 Datafile 6 E:\ORANT\DATABASE\RBS1.DBS
>
>We have an export that we may be able to restore. The database is running
>in non-archive mode. Any idea on how to resolve this problem?
>
>Thank you in advance
>--
>Please see the official ORACLE-L FAQ: http://www.orafaq.com
>--
>Author:
> INET: peter.lee_at_honeywell.com
>
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-- 

/regards

Peter Gram

Mobil : +45 2527 7107
Fax   : +45 4466 8856

Miracle A/S
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2760 Måløv
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