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Status Functionality already exists
Workspace Db2
Created by Guest
Created on Aug 26, 2020

Direct read of Archive logs from TSM server when using db2 rollforward on crossnode restore operations

Usually our Db2 backups to TSM. Occasionally we restore a Db2 system in another operating center from where we have to access to the TSM server for Restore/rollforward.

In the target environment the Db2 archive logs are extracted via db2adutl afterwards transferred to the destination directory and finally rollforward.

Since db2 rollforward does currently not support read of Archive logs from TSM. it takes unnecessarily long to extract the Archive logs , up to factors.

If db2 rollforward would be able to read Db2 archive logs, roll forward time would be probably fast.

Needed by Date Oct 30, 2020
  • Admin
    Michael Roecken
    Aug 29, 2020

    Hi. Yes you can. Depends on how you have TSM setup in your environment, but you can use a combination of db2adutl options NODENAME, OWNER and/or OPTIONS. An example for QUERY is in the link I provided earlier and the same should work for VERIFY. If it still doesn't work for you please contact IBM service and they can help you out. Thanks.

  • Guest
    Aug 28, 2020

    Thank you very much Michael Roecken. It worked.

    One last query,
    During crossnode recovery, Can we verify archive logs on TSM from different host(ofcourse TSM connectivity is there) without extracting locally?

    [auto1111@open-stg-storage logs]$ db2 update db cfg for R74D111A using logarchopt1 "'-fromnode=ip-10-110-200-7 -fromowner=root'"
    DB20000I The UPDATE DATABASE CONFIGURATION command completed successfully.
    [auto1111@open-stg-storage logs]$ db2 update db cfg for R74D111A using VENDOROPT "'-fromnode=ip-10-110-200-7 -fromowner=root'"
    DB20000I The UPDATE DATABASE CONFIGURATION command completed successfully.VENDOROPT is the main configuration that i was missingOn open staging server --[auto1111@open-stg-storage logs]$ db2 get db cfg for R74D111A | grep LOGARCH
    First log archive method (LOGARCHMETH1) = TSM
    Archive compression for logarchmeth1 (LOGARCHCOMPR1) = OFF
    Options for logarchmeth1 (LOGARCHOPT1) = -fromnode=ip-10-110-200-7 -fromowner=root
    Second log archive method (LOGARCHMETH2) = TSM
    Archive compression for logarchmeth2 (LOGARCHCOMPR2) = OFF
    Options for logarchmeth2 (LOGARCHOPT2) =
    [auto1111@open-stg-storage logs]$ db2 get db cfg for R74D111A | grep VENDOROPT
    Vendor options (VENDOROPT) = -fromnode=ip-10-110-200-7 -fromowner=root
    [auto1111@open-stg-storage logs]$

  • Admin
    Michael Roecken
    Aug 27, 2020

    Hi. Can you please clarify this point:


    > Since db2 rollforward does currently not support read of Archive logs from TSM. it takes unnecessarily long to extract the Archive logs , up to factors.

    > If db2 rollforward would be able to read Db2 archive logs, roll forward time would be probably fast.


    Db2 ROLLFORWARD command will retrieve log files from TSM. As long as the system the rollforward is being run from has access to the TSM server the following steps can be done to ensure permissions to the TSM objects is possible:

    https://www.ibm.com/support/knowledgecenter/SSEPGG_11.5.0/com.ibm.db2.luw.admin.ha.doc/doc/c0011981.html


    If the target database name is different from the source database we have an additional option through LOGARCHOPTx --DBNAME (see https://www.ibm.com/support/knowledgecenter/SSEPGG_11.5.0/com.ibm.db2.luw.admin.ha.doc/doc/r0006082.html).


    If none of this works for you I would be interested in some more details the steps that you are blocked on.


    Thanks.