Managing Serviceguard Extension for SAP, December 2007

SAP Supply Chain Management
Planning the Volume Manager Setup
Chapter 4 211
/sapdb/data/wrk: The working directory of the main liveCache/SAPDB
processes is also a subdirectory of the IndepData path for non-HA setups.
If a liveCache restarts after a crash, it copies important files from this
directory to a backup location. This information is then used to
determine the reason of the crash. In HA scenarios, for liveCache
versions lower than 7.6, this directory should move with the package.
SAP allows you to redefine this path for each liveCache/SAPDB
individually. SGeSAP expects the work directory to be part of the lc
package. The mount point moves from /sapdb/data/wrk to
/sapdb/data/<LCSID>/wrk. This directory should not be mixed up with
the directory /sapdb/data/<LCSID>/db/wrk that might also exist. Core
files of the kernel processes are written into the working directory. These
core files have file sizes of several Gigabytes. Sufficient free space needs
to be configured for the shared logical volume to allow core dumps.
NOTE For liveCache starting with version 7.6 these limitations do not exist any
more. The working directory is utilized by all instances (IndepData/wrk)
and can be globally shared.