Hi,
We have an ERP system running on HP-UX with Oracle database.
To stick with SAP recommendation, the filesystems holding the datafiles should have a blocksize of 8192K. We have 5 filesystem of 2 TB for the datafiles of the production system, and 3 have a blocksize of 1024k instead of 8192k.
The safest strategy would be to:
- Stop SAP and DB
- Copy the datafiles of these 3 filesystems to 3 new filesystem with a blocksize of 8192K
- Adapt the mount points
- Restart the DB and SAP
The problem with this strategy is that it is very time consuming, and will need a long downtime to complete it.
We have another strategy in mind:
- Putting the database in backup mode
- Copying all the datafiles (for the 5 filesystems) to new filesystems
- Putting the database back in normal mode
- Stopping SAP and the DB
- Changing the mounting points to the new filesystems
- Starting up the database and recover it (applying all the logs)
- Starting SAP
This should help us reducing the downtime.
Can you advise if it is a valid strategy ? Do you have any other idea on how we could proceed ?
Thanks in advance for your help :-)
Antoine