Creating the SAP R/3 Environment

For a simple installation, it is sufficient to create the following file systems:
mount point size in GB
/compat/linux/oracle 45 GB
/compat/linux/sapmnt 2 GB
/compat/linux/usr/sap 2 GB

It is also necessary to created some links. Otherwise the SAP Installer will complain, as it is checking the created links:

# ln -s /compat/linux/oracle /oracle
# ln -s /compat/linux/sapmnt /sapmnt
# ln -s /compat/linux/usr/sap /usr/sap

Possible error message during installation (here with System PRD and the SAP R/3 4.6C SR2 installation):

INFO 2002-03-19 16:45:36 R3LINKS_IND_IND SyLinkCreate:200
Checking existence of symbolic link /usr/sap/PRD/SYS/exe/dbg to
/sapmnt/PRD/exe. Creating if it does not exist...

WARNING 2002-03-19 16:45:36 R3LINKS_IND_IND SyLinkCreate:400
Link /usr/sap/PRD/SYS/exe/dbg exists but it points to file
/compat/linux/sapmnt/PRD/exe instead of /sapmnt/PRD/exe. The
program cannot go on as long as this link exists at this
location. Move the link to another location.

ERROR 2002-03-19 16:45:36 R3LINKS_IND_IND Ins_SetupLinks:0
can not setup link '/usr/sap/PRD/SYS/exe/dbg' with content
'/sapmnt/PRD/exe'