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IDS Forum

AW: HDR Logical Recovery Problems

Posted By: Schuran, Sven
Date: Wednesday, 3 December 2003, at 8:40 a.m.

In Response To: HDR Logical Recovery Problems (WOLFGANG NEUMAR)

Please read documentation again, when a secondary is switched to standard, you have to restore it with a backup from primary!

only when primary switched to standard and afterwards back to primary and the secondary is secondary all the time and all needed logocal logs are available on primary the data will be transferd to secondary. otherwise you have to setup up a new hdr!

cu sven

>>This situation came from a test when the secondary was a standard server, and then the primary came back online, the secondary became again secondary.
-----Ursprüngliche Nachricht-----
Von: WOLFGANG NEUMAR [mailto:wolfgang.neumar@hp.com]
Gesendet: Freitag, 28. November 2003 11:15
An: ids@iiug.org
Betreff: HDR Logical Recovery Problems [2267]

Hi!

We are running HDR in a testenvironment with IDS 9.30FC3X3 on HP Tru64 5.1B.
We got errors from HDR:

teszi06 ( primary ):

04:17:30 DR: ping timeout
04:17:30 DR: Receive error
04:17:30 Checkpoint Completed: duration was 66 seconds.
04:17:30 Checkpoint loguniq 4890, logpos 0x51d018

04:17:30 Maximum server connections 21
04:17:32 DR: Turned off on primary server
04:17:32 DR: Cannot connect to secondary server
04:17:42 DR: Primary server connected
04:17:42 DR: Receive error

teszr06 ( secondary ):

04:06:23 Maximum server connections 20
04:11:22 Checkpoint Completed: duration was 0 seconds.
04:11:22 Checkpoint loguniq 4889, logpos 0xf9b018

04:11:22 Maximum server connections 20
04:17:18 DR: ping timeout
04:17:42 DR: Received connection request from remote server when DR is not Off
[Local type: Secondary, Current state: FAILED]
[Remote type: Primary]

04:17:54 DR: Received connection request from remote server when DR is not Off
[Local type: Secondary, Current state: FAILED]
[Remote type: Primary]

04:18:06 DR: Received connection request from remote server when DR is not Off
[Local type: Secondary, Current state: FAILED]
[Remote type: Primary]

04:18:18 DR: Received connection request from remote server when DR is not Off
[Local type: Secondary, Current state: FAILED]
[Remote type: Primary]

Can anyone explain what this error messages mean?

I decided to restart the secondary instance.

The primary server got connected.

status on the secondary:

09:10:21 Physical Recovery Complete: 1406 Pages Examined 1406 Pages Restored.

09:10:22 Dataskip is now OFF for all dbspaces
09:10:22 Restartable Restore has been DISABLED
09:10:22 Recovery Mode
09:10:23 DR: Failure recovery from disk in progress ...
09:10:25 Logical Recovery Started.
09:10:25 10 recovery worker threads will be started.
09:10:25 Start Logical Recovery - Start Log 4889, End Log ?
09:10:25 Starting Log Position - 4889 0xf9b018
tevbis01.health.local / root:
tevbis01.health.local / root:
tevbis01.health.local / root:onstat -

Informix Dynamic Server Version 9.30.FC3X3 -- Fast Recovery (Sec) -- Up 00:12:33 -- 524288 Kbytes
Blocked:CKPT

tevbis01.health.local / root:onstat -g dri

Informix Dynamic Server Version 9.30.FC3X3 -- Fast Recovery (Sec) -- Up 00:12:43 -- 524288 Kbytes
Blocked:CKPT

Data Replication:
Type State Paired server Last DR CKPT (id/pg)
secondary off teszi06 4889 / 3995

DRINTERVAL 30
DRTIMEOUT 30
DRLOSTFOUND /usr/informix/teszi06/etc/dr.lostfound

In this state the secondary hangs.

I've analysed the situation.
The next logical log on the secondary is not backed up!

20d16a248 37 U-B---- 4886 4284bd 5000 234 4.68
20d16a298 38 U-B---- 4887 429845 5000 5000 100.00
20d16a2e8 39 U-B---- 4888 42abcd 5000 5000 100.00
20d16a338 40 U---C-L 4889 42bf55 5000 5000 100.00
20d16a388 41 U------ 4841 42d2dd 5000 4583 91.66
20d16a3d8 42 U-B---- 4842 42e665 5000 609 12.18
20d16a428 43 U-B---- 4843 42f9ed 5000 5000 100.00

On the primary:

onstat -l
....
20d16a2e8 39 U-B---- 4888 42abcd 5000 5000 100.00
20d16a338 40 U-B---- 4889 42bf55 5000 5000 100.00
20d16a388 41 U-B---- 4890 42d2dd 5000 5000 100.00
20d16a3d8 42 U---C-L 4891 42e665 5000 4018 80.36
20d16a428 43 U-B---- 4843 42f9ed 5000 5000 100.00

This situation came from a test when the secondary was a standard server, and then the primary came back online, the secondary became again secondary.

How can I free the log.log 4841 on the secondary?
Or how can I finish logical recoery without restore a level 0 backup?

Thanks & regards
Wolfgang

Messages In This Thread

HDR Logical Recovery Problems
WOLFGANG NEUMAR -- Friday, 28 November 2003, at 5:15 a.m.
- Re: HDR Logical Recovery Problems
  ART KAGEL, BLOOMBERG/ 65E 55TH -- Friday, 28 November 2003, at 8:44 a.m.
- AW: HDR Logical Recovery Problems
  Schuran, Sven -- Wednesday, 3 December 2003, at 8:40 a.m.

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