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running 2 LiveCache instances on one Box

Former Member
0 Kudos

Hi all,

does anyone know technical details if it should be possible to run 2 independant LiveCache instances on one Physical Hardware Server?

Both run in their dedicated SAP Netweaver 7.0 System but share the same Physical Memory, Harddisk, CPU.

Thank you

regards

Nesimi

Accepted Solutions (1)

Accepted Solutions (1)

lbreddemann
Active Contributor
0 Kudos

HI Nesimi,

this is perfectly possible. MaxDB/liveCache instances are installed in seperate DEPENDEND_PATHs in which version-dependend binaries are stored.

This way you can run and maintain the installations independendly, even if the Versions differ by several releases. E.g. on my testsystem I've installed MaxDB 7.3, 7.4, 7.5, 7.6 and 7.7 in parallel. All of them work fine - also at the same time (ok it's slow then, but it works...)

This is also described in the MaxDB documentation (look for Installation details information).

Best regards,

Lars

Former Member
0 Kudos

Hi Lars

I just checked this with some APO/LC Consultants and they claim that this scenario is not possible.

Can you guide me to that documentation?

Thanks a lot!

regards

Nesimi

lbreddemann
Active Contributor
0 Kudos

Hi Nesimi,

on what is the statemen5 of these APO/LC based?

If you look into the installation guide (http://service.sap.com/instguides) for SCM/liveCache you'll find that the liveCache name has to be chosen by the customer and that it has to be unique throughout the system landscape.

It's NOT stated that you can have only one livecache per server.

Anyhow, it's questionable if this is a good idea, since liveCache instances are very resource intensive components that try to get all the processing power they can get.

Putting more than one liveCache to one machine could (will) lead to performance issues and perhabs aborts due to resource bottlenecks (e.g. main memory).

Nevertheless: it's possible (e.g. for non-productive environements).

See notes <a href="http://service.sap.com/sap/support/notes/327578">#327578</a>, <a href="http://service.sap.com/sap/support/notes/392852">#392852</a> and <a href="http://service.sap.com/sap/support/notes/21960">#21960</a> for more details on this.

KR Lars

Former Member
0 Kudos

Thanks a lot Lars!

Answers (0)