SYSTEM ERROR: rlmemchk mb_aictr

Posted by Valeriy Bashkatov on 07-Dec-2015 08:46

Hello,

After database (10.2B Win64) failure with error

(14684) SYSTEM ERROR: Attempt to read block 0 which does not exist in area <areanum>, database <database>

I  have tried to start DB and get this error

(333)   Multi-user session begin.
(5326)  Begin Physical Redo Phase at 115808 . 
(861)   SYSTEM ERROR: rlmemchk mb_aictr: note=1628661 mstrblk=2756044.
(5292)  SYSTEM ERROR: The broker is exiting unexpectedly, beginning Abnormal Shutdown. 
(-----) drexit: Initiating Abnormal Shutdown
(5028)  SYSTEM ERROR: Releasing regular latch. latchId: 4 
(2522)  User 0 died holding 1 shared memory locks. 

the problem was solved when we turned off After Imaging and then make truncate bi

My question is why it's helped and what is mean this message? 

rlmemchk mb_aictr: note=1628661 mstrblk=2756044.

It somehow connected with the desync between AI and BI?

Regards,
Valeriy

Posted by Libor Laubacher on 07-Dec-2015 09:07

> My question is why it's helped

It helped because with AI disabled there is/was no longer a need to do that "check". Ie, with AI being off, no need to check for AI file update counter stored in the master block. The meaning of the message is that there was a difference between master block data and data being processed during redo phase. (which does not help much). In another words there is or rather was a corruption somewhere.

I would focus on the 14684 message, ie on the area mentioned there.

All Replies

Posted by Libor Laubacher on 07-Dec-2015 09:07

> My question is why it's helped

It helped because with AI disabled there is/was no longer a need to do that "check". Ie, with AI being off, no need to check for AI file update counter stored in the master block. The meaning of the message is that there was a difference between master block data and data being processed during redo phase. (which does not help much). In another words there is or rather was a corruption somewhere.

I would focus on the 14684 message, ie on the area mentioned there.

Posted by Valeriy Bashkatov on 08-Dec-2015 01:59

[quote user="Libor Laubacher"]

I would focus on the 14684 message, ie on the area mentioned there.

[/quote]
So it would mean that even if the database is then started successfully, it is still maybe a chance that there is damage in the area?
How to check it? dbrpr by area?

This thread is closed