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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-6425) DB got corrupted during the heavy operations.
Date Mon, 02 Dec 2013 14:29:36 GMT

    [ https://issues.apache.org/jira/browse/DERBY-6425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13836546#comment-13836546
] 

Rick Hillegas commented on DERBY-6425:
--------------------------------------

Hi Patil,

Here are some questions we often ask about data corruptions:

1) Do you run the compression procedures on the tables?

2) Is the conglomerate number (2032) the conglomerate number of a table or an index? The following
query will give you that information:

select s.schemaName, t.tableName, c.conglomerateName, c.isIndex
from sys.sysschemas s, sys.systables t, sys.sysconglomerates c
where c.tableid = t.tableid
and t.schemaid = s.schemaid
and c.conglomerateNumber = 2032;

3) Is the disk write-cache enabled? If so, do you suffer frequent power outages or other system
disruptions?

Thanks,
-Rick

> DB got corrupted during the heavy operations.
> ---------------------------------------------
>
>                 Key: DERBY-6425
>                 URL: https://issues.apache.org/jira/browse/DERBY-6425
>             Project: Derby
>          Issue Type: Bug
>          Components: Store
>    Affects Versions: 10.9.1.0
>         Environment: Suse 10.
>            Reporter: patil devidas
>            Priority: Critical
>
> ------------  BEGIN SHUTDOWN ERROR STACK -------------
> ERROR XSDG2: Invalid checksum on Page Page(5482,Container(0, 2032)), expected=3,506,219,016,
on-disk version=492,279,644, page dump follows: Hex dump:
> 00000000: 0075 0000 0001 0000 0000 0000 0067 0022  .u...........g..
> 00000010: 0000 0028 0000 0000 0000 0000 0000 0000  ................
> 00000020: 0000 0000 0001 0000 0000 0000 0000 0000  ................
> 00000030: 0000 0000 0000 0000 0000 0000 0406 000a  ................
> 00000040: 0026 0024 6139 3630 3261 6266 2d33 3163  ....a9602abf.31c
> 00000050: 662d 3131 6533 2d38 3363 632d 6231 3935  f.11e3.83cc.b195
> 00000060: 6138 3139 3263 6334 000b 0009 434f 4d50  a8192cc4....COMP
> 00000070: 4c45 5445 4400 0c07 dd0a 0a00 1310 0c05  LETED...........
> 00000080: 4e08 4000 0c07 dd0a 0a00 1310 1c03 1975  N..............u



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