User's Guide

1. Log on as <lcsid>adm on the machine on which liveCache was installed.
Make sure, you have mounted a sharable logical volume on /sapdb/<LCSID>/wrk as discussed
above.
2. Change the path of the runtime directory of the liveCache and move the files to the new logical volume
accordingly.
cd /sapdb/data/wrk/<LCSID>
find . -depth -print | cpio -pd /sapdb/<LCSID>/wrk
cd ..
rm -r /sapdb/data/wrk/<LCSID>
dbmcli -d <LCSID> -u control,control
dbmcli on <LCSID>>param_directget RUNDIRECTORY
OK
RUNDIRECTORY /sapdb/data/wrk/<LCSID>
---
dbmcli on <LCSID>>param_directput RUNDIRECTORY /sapdb/<LCSID>/wrk
OK
---
dbmcli on <LCSID>>
liveCache Installation Step: LC020
Mark all shared non-CFS liveCache volume groups as members of the cluster.
This only works if the cluster services are already available. For example:
cd /
# umount all logical volumes of the volume group
vgchange -a n <vg_name>
vgchange -c y <vg_name>
vgchange -a e <vg_name>
# remount the logical volumes
The device minor numbers must be different from all device minor numbers gathered on the other hosts.
Distribute the shared volume groups to all potential failover nodes.
HP-UX Setup for Options 1, 2 and 3
This section describes how to synchronize and configure the HP-UX installations on all cluster nodes in order
to allow that the same liveCache instance is able to run on any of these nodes. This section does not apply
to hot standby systems, since they never perform any instance failover.
For systems with hot standby this entire HP-UX setup section can be skipped.
Cluster Node Synchronization
1. Repeat the steps in this section for each node of the cluster that is different from the primary. .
2. Logon as root to the primary host and prepare a logon for each of its backup hosts.
liveCache Installation Step: LC030
Synchronize the /etc/group and /etc/passwd files.
The liveCache installation has created a <lcsid>adm user belonging to the sapsys group. Make sure the
user and group exist on all nodes and that UID and GID are consistent across the nodes.
liveCache Installation Step: LC040
Synchronize the sql<nn> entries from the /etc/services file between the nodes to match the entries on
the primary node.
liveCache Installation Step: LC050
Change the HP-UX kernel on the backup nodes to meet the SAP liveCache requirements as specified in the
SAP liveCache installation documents.
HP-UX Setup for Options 1, 2 and 3 99