Managing Serviceguard Extension for SAP Version B.05.10, September 2010

SAP Application Server Configuration
This section describes some required configuration steps that are necessary for SAP to become
compatible to a cluster environment. The following configuration steps do not need to be
performed if the SAP System was installed using virtual IPs. The steps are only required to make
a non-clustered installation usable for clustering.
• SAP ABAP Engine specific configuration steps
• SAP J2EE Engine specific configuration steps
SAP ABAP Engine specific configuration steps
Logon as <sid>adm on the primary node on which the Central Instance or the System Central
Services have been installed. The appropriate Serviceguard package should run on this host in
debug mode.
Installation Step: IS1100
For SAP Central Instance virtualization, change into the profile directory by typing the
alias:
cdpro
In the DEFAULT.PFL change the following entries and replace the hostname with the relocatable
name if the ci component is going to be clustered. Example:
SAPDBHOST = <relocdb>
rdisp/mshost = <relocci>
rdisp/mshost = <relocci>
rdisp/sna_gateway = <relocci>
rdisp/vbname = <relocci>_<SID>_<instnr>
rdisp/btcname = <relocci>_<SID>_<instnr>
rslg/collect_daemon/host = <relocci>
If you don't have Replicated Enqueue:
rdisp/enqname = <relocci>_<SID>_<instnr>
The following parameters are only necessary if an application server is installed on the adoptive
node. Example:
rslg/send_daemon/listen port
rslg/collect_daemon/listen port
rslg/collect_daemon/talk port
Optional Step: IS1110
If you want to use the DB-Reconnect functionality for ABAP Instances:
Add entries to:
• /sapmnt/<SID>/profile/<SID>_<INSTNAME><INR>
• Instance Profiles of all application servers that use DB-Reconnect
Example:
rsdb/reco_trials = 15
rsdb/reco_sleep_time = 60
rsdb/reco_sosw_for_db = off (based on OSS #109036)
rsdb/reco_sync_all_server = on
Installation Step: IS1120
In the instance profile of each clustered ABAP instance, two values have to be added to specify
virtual addressing.
For example, in <SID>_DVEBMGS<INSTNR>:
SAPLOCALHOST = <relocci>
SAPLOCALHOSTFULL = <relocci>.<domain>
SAP Application Server Configuration 103