Hi Florian,

the logpage at the offset 1442 on your logvolume is 
defect. Because your system is able to restart into online
mode, this page is not necessary for the restart.
When you initiate the logbackup, then the logpages are
checked for consistency. Because this page is not consistent,
the logbackup terminates the kernel. I can see that the logpage
is defect because there are values shown in the kerneltrace
 which are inconsistent and should never occur in that
combination. 

First of all please check the logfiles of your system for
hardware errors. The page had been written (if the header is correct)
on Jun 11th at 8:25. Also I'd like to know if there had been
any administration taken place at this time.


To resolve the error, it is neccessary to reinitialize the logvolume.
You can do this with the following steps:
1) ensure that a db_online will work
2) enter admin mode
3) complete databackup for security reasons
4) issue the command "util_execute clear log" which will reinitialize
   the logvolume (and delete everything on it!!)
5) start the database
6) create a complete databackup in order to start the backup-history again
7) if necessary switch on autosave-log

kind regards, Martin



This page has been written 

-----Original Message-----
From: Florian Schmitz [mailto:[EMAIL PROTECTED] 
Sent: Monday, June 13, 2005 12:33 PM
To: Brunzema, Martin
Subject: Re: SAPDBErr Assertion of state Log_SaveIterator::CheckPageBuffer 
pagebuffer is not inconsistent failed!

Hi Martin,

see the .prt.
The error happens explicitly when writing logbackups.
I restored a full backup, the db went online, then i tried a log-backup ...

Any Idea?

Flo

Florian Schmitz

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Brunzema, Martin schrieb:
> Hi Florian,
> 
> which release and build do you use?
> Could you please generate and send the readable kerneltrace 
> either by issuing the dbmcli command
>       trace_prot abkx
> or clicking the corresonding actions in the dbmgui (check -> database
> trace).
> 
> There should be some information about the error in the generated
> file, which has the filename <your databasename>.prt and is located
> in the rundirectory. 
> 
> kind regards, Martin
> 
> -----Original Message-----
> From: Florian Schmitz [mailto:[EMAIL PROTECTED] 
> Sent: Monday, June 13, 2005 11:42 AM
> To: [email protected]
> Subject: SAPDBErr Assertion of state Log_SaveIterator::CheckPageBuffer
> pagebuffer is not inconsistent failed!
> 
> Hello List,
> 
> somebody already came accross this one? 
> 
> After doing an full cold-backup and restarting the DB, knldiag.err shows
> the following :
> 
> 2005-06-13 11:21:51  3555 ERR     0 SAPDBErr Assertion of state
> Log_SaveIterator::CheckPageBuffer 
> pagebuffer is not inconsistent failed!
> 2005-06-13 11:21:51  3555 ERR 11196 DBCRASH  vabort:Emergency Shutdown,
> Log_SaveIterator.cpp: 215
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE   ----> Emergency Stack Back
> Trace <----
> ..........
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE   ----> Symbolic Stack Back
> Trace <----
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE      0: 0x0878b2ca
> eo670_CTraceStack +0x001e
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE
> /usr/sapdb/depend/pgm/kernel
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE         Frameinfo
> [0xb542b7ac] (0x0,0x0,0x1,0x878b2b8)
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE      1: 0x087a97bd vabort
> +0x0039
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE
> /usr/sapdb/depend/pgm/kernel
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE         Frameinfo
> [0xb542b7dc] 
> (0x8af21dc,0x8938160,0x8938182,0xb542b804)
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE      2: 0x087153c3
> RTE_Crash__FRC20SAPDBErr_MessageList 
> +0x010f
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE
> /usr/sapdb/depend/pgm/kernel
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE         Frameinfo
> [0xb542b80c] 
> (0x40250001,0xd7,0xb542b84c,0x8715346)
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE      3: 0x0861c4a5
> CheckPageBuffer__16Log_SaveIterator 
> +0x0199
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE
> /usr/sapdb/depend/pgm/kernel
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE         Frameinfo
> [0xb542b84c] (0xb542b890,0x0,0x0,0x861c31a)
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE      4: 0x0861c2cd 
> GetNextLogPages__16Log_SaveIteratoriPt11tsp00_Array3Z9tkb3_pagei1000i100
> 0RUi +0x0791
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE
> /usr/sapdb/depend/pgm/kernel
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE         Frameinfo
> [0xb542b8bc] 
> (0x8b5a19c,0x8,0xb542ba0c,0x861c2c1)
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE      5: 0x083a454e
> kb391_ReadNextLogpages +0x0042
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE
> /usr/sapdb/depend/pgm/kernel
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE         Frameinfo
> [0xb542ba0c] 
> (0x8b5a19c,0x4c,0x2a86a000,0xb542ba38)
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE      6: 0x0839eb03
> kb39drt_devsp_read_task +0x0367
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE
> /usr/sapdb/depend/pgm/kernel
> 2005-06-13 11:21:51  3555 ERR 11599 BTRACE         Frameinfo
> [0xb542ba3c] 
> (0xb542bde0,0x2a86a000,0xb897dbca,0x839eae5)
> 
> 

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