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Former Member

upgrading MaxDB 73 to 76

Dear Forum,

We should upgrade a MaxDB version 7.3.0 Build 035-000-090-084 database to MaxDB version 7.6.

This database holds 3 instances: SDB, QAS and DEV and it are ContentServer installations.

Unfortunately two of these installations: SDB and QAS share the same Installation path: c:\sapdb\SDB\db, although the system shows that the c:\sapdb\QAS\db directory exists as well.

I have read in the upgrade guide that instances shouldn't share the installation path, otherwise the upgrade, using SDBUPD, can't be done.

On the other hand there is still a option for migration of the instance using SDBINST, but the guide ( migration73_74eng.pdf) lists as prereq. that the installation shouldn't be a SAP installation.

I have read several documents, notes etc. but I can't find a conclusive solution.

Can someone shed some light on this?

I s f.i. dbmrelocate a solution for this?

best regards,

Louis Cladder

Edited by: L. Cladder on Dec 4, 2010 5:56 PM

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    Former Member
    Dec 04, 2010 at 04:57 PM


    what I would do in this case:


    1) create offlie backup of QAS instance

    2) create new instance QA1 for software installation c:\sapdb\QAS\db and restore QA1 intance from QAS backup

    3) change in your r/3 sustem (QA) configuarion so it points to QA1 instance instead og QAS

    4) thet/test/test , if you are happy with this change and QA1 instance works fine with CS , you can drop QAS instance


    you can do this whole procedure by droppping QAS just after the backup and creating new QAS instance using sapdb\QAS\db , in this case you will end up with QAS instance directly ,

    1) backup of QAS ,

    2) drop of QAS

    3) create new QAS with restore from backup


    thereis one better , more elegant solution

    you can use command

    dbmcli -s -d QAS -u <dbm_user>,<password> db_drop WITHOUTFILES


    register QAS with sapdb/QAS/db software

    dbmcli -s -R <drive>:\sapdb\QAS\db inst_reg <drive>:\sapdb\QAS\db

    see SAP note 604680 for details !!!


    -> anyway, please make sure you have proper backup of all instances before you do any changes

    (proper backup means backup done by maxdb/sapdb tools , the best one is offline for 7.3)

    ->before upgrading to 7.6 I would apply lates SAPDB 7.3 patch ( i think)



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