TMS: split trans directory between hosts(log, tmp)

[peter_baumgartner]

Hello folks,

we are actually facing a situation where DEV and Production System are connected via WAN. It is usually no problem except when we want to import patches. It looks like SAP is producing huge amounts of read/writes on the trans dir.

So my question: Is it possible to split trans between two hosts to improve tp performance?

I would prefer sharing bin, buffer, cofiles, data, etc, storage but keep log and tmp local.

As we are one iSeries/AS400 we could try to change profile parameter on both hosts A and B to localhost/sapmnt/trans, delete bin, buffer, cofiles, data, etc on host B and replace every folder with a symlink to hostA/sapmnt/trans/<foldername>

Has anyone already tried this or are there better ideas?

Thx for your help!

[Reagan · Accepted solution]

The amount of read/write is normal during a upgrade or patching activity and if the problem is only during such a situation then I wouldn't consider doing this.

The bin, data, cofiles, buffer and EPS should be accessible for all systems.

If the problem is with the space used by the transport directory then consider doing a clean up of the transport directory.

If the problem is only during a patching then temporarily redirect the EPS/in, log and tmp directories to the local file system until the activity is over.

Regards

RB

[peter_baumgartner · Accepted solution]

It is all about unnecessary read/writes via WAN.

Now both server have a local sapmnt/trans directory and every single subdirectory points from ServerA/usr/sap/trans/dir<x> to ServerB/usr/sap/trans/dir<x>.

Before starting patches, we rename the links to IN, LOG and TEMP and create local directories.

This helps a lot in matter of patch-times.

br

Peter

[Reagan]

Create files systems called /SAPtrans/log and /SAPtrans/tmp on all the servers where the transport directory is shared.

Create symbolic links from the log and tmp sub directories to the local /SAPtrans/log and /SAPtrans/tmp filesystems or directories.

Regards

RB