Managing Serviceguard Extension for SAP, December 2007

Step-by-Step Cluster Conversion
HP-UX Configuration
Chapter 3 121
IS050 Installation Step:
The usage of local executables with SGeSAP is required. It is not
sufficient to have a local executable directory as part of the kernel 7.x
instance directory.
Check if the Central Instance host and all application servers have a
directory named /usr/sap/<SID>/SYS/exe/ctrun. If the directory
exists, this step can be skipped. The system is already using local
executables through sapcpe.
To automatically synchronize local copies of the executables, SAP
components deliver the sapcpe mechanism. With every startup of the
instance, sapcpe matches new executables stored centrally with those
stored locally. Figure 3-1 shows a SAP filesystem layout with sapcpe
activated for two Application Servers.
Figure 3-1 sapcpe Mechanism for Executables
Central Instance
/usr/sap/<SID>/SYS/exe/
dbg/
opt/
run/
softlink
NFS
Copied executables
via sapcpe
/sapmnt/<SID>
exe/
NFS
App Server 2
/usr/sap/<SID>/SYS/exe/
sapcpe
dbg/
opt/
run/
ctrun/
NFS
NFS Mounted
/sapmnt/<SID>
exe/
/usr/sap/<SID>/SYS/exe/
App Server 1
sapcpe
dbg/
opt/
run/
ctrun/
NFS Mounted
/sapmnt/<SID>
exe/