How to install more than one instances on one machine

[Former Member]

Hi ALL,

I want to install more than one instances on one machine, but i am a freshman on SAP field. How and where can i get the related infomation for that? thank you very much !!

[Former Member · Accepted solution]

Hi li tieyan,

Welcome to SDN.

Can you confirm that you are using a Unix platform? The SAP note <a href="http://service.sap.com/sap/support/notes/21960">#21960</a> (Several instances/systems on one UNIX computer) discusses the general considerations, when installing more than one instance on the same host.

Regards, Mark

[Former Member · Accepted solution]

thank you mark,

I have tried and got successful to install two WebAS servers on windows2003, only give them different SID.

I will try it on the Unix platform later, thank you again!!

tieyan

[Former Member · Accepted solution]

Hi tieyan,

Glad the information was of some help.

For Windows, there is an older note <a href="http://service.sap.com/sap/support/notes/28392">28392</a> that has some more information. It is important also that the SAP parameter PHYS_MEMSIZE is sized correctly according to note <a href="http://service.sap.com/sap/support/notes/88416">88416</a> (the bottom of the note gives some examples). For example, if there were two central instances and the two Oracle database instances on one host, PHYS_MEMSIZE for both instance profiles (of the central instances) would be 35% of the RAM (1/2 of 70%). In the case of MSSQLSRV 2000, for PHYS_MEMSIZE you would refer to the scenarios of note <a href="http://service.sap.com/sap/support/notes/327494">327494</a>.

If you ever want to thank somebody else for helping in answering a question, the <a href="https://wiki.sdn.sap.com/wiki/display/HOME/RulesofEngagement">Rules of Engagement</a> has a section 'Thank Others by Giving Points' that explains this further.

Regards, Mark

[Former Member]

Hell Tieyan!

Can you descibe certain steps of what do you do? E.g.:

1) Setup new entries in environment variables of ora<sid> for new instances

2) Correct *.ora files (like in UNIX)

3) Start Oracle Installer.

Is this the right steps? Or am I wrong?

Thank you

[Former Member]

I mean install more than one WebAS servers( may be should call instances ) on one machines

[Former Member]

Hi,

Try this out...<a href="http://help.sap.com/saphelp_erp2005vp/helpdata/en/6d/41e74196d8c517e10000000a155106/frameset.htm">Running application server in a clustered Environment</a>

- Nagarajan.