Installing SAP – Same Instances

1. ASCS and ERS should be installed based on “virtual hostname” based on “virtual IP”, which should have been added to hosts files during earlier installation steps. Please be sure to do so if they have not already been done prior to installing SAP.

• • When installing SAP (specifically ASCS or SCS) you need to specify the SAPINST_USE_HOSTNAME=vip option. This is not required for ERS. (Note: Document the SAPINST_USE_HOSTNAME virtual IP address as it will be used later during creation of the SAP resources in LifeKeeper.)
    

Note: Specify sapinst SAPINST_USE_HOSTNAME=vip where vip is the virtual IP that will float between the nodes.

Run ./sapinst SAPINST_USE_HOSTNAME= {hostname}

• • In seven phases, the Core Services should be created and started. If permission errors occur on jdbcconnect.jar, go to /sapmnt/STC/exe/uc/linuxx86_64 and make that directory as well as file jdbcconnect.jar writable (chmod 777 ---).
    

Enqueue replication should be configured and checked working based on SAP documentation and best practices.

2. ASCS and ERS profiles should be pointing to local mount point containing /usr/sap, sapmnt or any other necessary for SAP files in your environment, the actual files will be moved onto NFS mount points after it is installed and configured.

In the instance profiles of ERS and ASCS instances you have to change the entries, to prevent the services from getting automatically restart the program, after that you have to restart the “sapstartsrv” of ASCS and ERS instances. e.g ----

Autostart = 1

Restart_Program_00 = local $(_ER) pf=$(_PFL) NR=$(SCSID)

to

Autostart = 0

Start_Program_00 = local $(_ER) pf=$(_PFL) NR=$(SCSID)

3. Sapstop SAP on node 1

4. Using the LifeKeeper GUI, right click on the IP address resource created for ASCS, select “In-Service” and select node2 to switch the IP onto node 2.

5. Repeat step 1 to install SAP onto node 2 and ensure that it’s able to run correctly

6. Sapstop SAP on node 2

7. Using the LifeKeeper GUI, right click on the IP address resource created for ASCS, select “In-Service” and select node1 to switch the IP back onto node 1.

8. Sapstart SAP on node 1 and ensure that it’s able to run correctly