64bit /32bit MaxDB

[Former Member]

Hi,

When you switch your Oracle database from 32-bit to 64-bit, you need to execute some steps to get this working correctly.

How does this work for MaxDB?

If i switch the OS from 32bit to 64bit, can i then just install the 64-bit MaxDB software, and let it run with the old database files without modification?

I can't find any notes covering this kind of migration...

Nico

[former_member229109 · Accepted solution]

Hello Nico,

"If i switch the OS from 32bit to 64bit, can i then just install the 64-bit MaxDB software, and let it run with the old database files without modification?"

-> For the liveCache type of the database, it's NOT the correct procedure.

What is the version of the database? Is your database liveCache?

If you want to perform a system copy for an SAP liveCache instance, see

SAP notes 457425 and 632357.

-> If you are SAP customer, please review the SAP notes::

129352 Homogeneous system copy with MaxDB (SAP DB)

552464 What is Big Endian / Little Endian? What Endian do I have?

962019 Heterogeneous system copy of a MaxDB Content Server Storage

715701 Migration to SAP DB/MaxDB

-> There are SAP notes/recommendations. For example, please see the SAP note 939406.

What is OS of the database server? Are you SAP customer?

Thank you & best regards, Natalia Khlopina

[Former Member · Accepted solution]

Hi,

Database is not livecache..

It 's MaxDB 7.6 running on linux x86 and migrating to linux x86_64, so i'll be safe using the backup/restore method.

Thanks for a pointer to the notes, very helpfull...

Kind Regards,

Nico

[markus_doehr2]

> If i switch the OS from 32bit to 64bit, can i then just install the 64-bit MaxDB software, and let it run with the old database files without modification?

>

> I can't find any notes covering this kind of migration...

Theoretically you could do that.

I would take a full database backup (in admin mode), install the operating system new (instead of upgrading) and do a system copy with a database restore.

Markus