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IDS Forum

HDR Logical Recovery Problems

Posted By: WOLFGANG NEUMAR
Date: Friday, 28 November 2003, at 5:15 a.m.

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






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