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RAC for SAP

Former Member
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Dear all,

I want to install SAP Netweaver 2004s on RAC. There are 2 servers that connected with SAN storage. How to configure DB1 and App1 on server 1, DB2 and App2 on server2. When one server goes down, one other server still lives.

Can you have any document about RAC for SAP?

Thanks very much,

Tan

Accepted Solutions (1)

Accepted Solutions (1)

Former Member
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Note 527843 - Oracle RAC support in the SAP environment

In note check -- >

o -> SAP on Oracle Real Application Clusters (RAC).

- SAP NetWeaver with Oracle 10gR2 RAC (UNIX & Linux)

- SAP NetWeaver with Oracle 10gR2 RAC (Windows 2003)

- Providing High Availability for SAP Resources

- SAP R/3 4.6D and 4.7 Enterprise with Oracle RAC 9.2 (UNIX)

- SAP R/3 4.x with Oracle 9iR2 RAC (Windows 2000 / 2003)

Thanks and regards

Former Member
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Thank for your replying. These documents are related to database installation for RAC. When setting-up application (central instance and central service instance), and how should we setup application on each server?

Thank Michael and Sergo

Former Member
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Hi again

It depends on your platform and cluster implementation, but in most cases you will implement SAP HA with a standalone enqueue server and a enqueue replication server. Check this thread for more infos:

Basically you have:

Node A: Enqueue/Message Server (ASCS00) + Dialog Instance

Node B: Enqueue Replication (ERS01) + Dialog Instance

Regards Michael

Answers (1)

Answers (1)

Former Member
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Hi Tan

On which platform are you going to install RAC? We have it running on SLES 10 linux on x86_64 hardware.

On linux you will use OCFS2 as cluster filesystem, and CRS (oracle clusterware) to cover HA, combined with SAPCTL to cover SAP HA.

Documentation is here: [SAP on Oracle Real Application Clusters (RAC)|https://www.sdn.sap.com/irj/sdn/ora?rid=/webcontent/uuid/e9071e42-0d01-0010-4bae-dafd2e524b57] [original link is broken];

Also check these sap notes:

527843 - Oracle RAC support in the SAP environment

581320 - FAQ: Oracle Real Application Cluster (RAC)

Best regards

Michael