Using Serviceguard Extension for RAC, 10th Edition, April 2011

Figure 12 Resources managed by SGeRAC and Oracle Clusterware and their dependencies
Startup and shutdown of the combined Oracle RAC-SGeRAC stack
The combined stack is brought up in proper order by cmrunnode or cmruncl as follows.
1. SGeRAC starts up.
2. The SGeRAC package manager starts up Oracle Clusterware via the Oracle Clusterware
MNP, ensuring that the storage needed is made available first. This requires prior startup of
disk group and mount point MNPs in the case of the storage needed by Oracle Clusterware
being managed by CFS.
3. On startup, Oracle Clusterware brings up the resources that it manages, that have been set
to auto-start within the Oracle Clusterware registry. It brings up the node applications (this is
an Oracle Clusterware term indicating resources configured per cluster node, such as the
Virtual Internet Protocol address (VIP), Oracle listener, etc.) and the ASM instance if configured.
Oracle Clusterware does not automatically bring up the RAC database instances (and the
Oracle services dependent on them) since we have turned off auto-start for the instances.
4. After the start of CRS, SGeRAC mounts the ASM disk groups which are configured for RAC
databases via ASMDG MNP packages.
5. Lastly, SGeRAC starts up the RAC database instance via the RAC database instance MNP,
ensuring that the storage needed by it is made available first (this requires prior startup of
disk group and mount point MNPs or ASM DG MNPs depending the kind of storage configured
for RAC databases, either CFS or ASM disk groups respectively). It can do this since the
SGeRAC dependency on the Oracle Clusterware MNP being up is met. So now the RAC
database instances and dependent Oracle services start up.
The combined stack is brought down in proper order by cmhaltnode or cmhaltcl as follows.
First, SGeRAC shuts down the RAC database via the RAC database instance MNP, followed by
shutdown of the storage needed by it. This requires subsequent shutdown of mount point and disk
group MNPs or ASMDG MNPs that are dependent on the particular RAC MNP in the case of the
storage needed by the RAC database being managed by CFS or ASM disk groups respectively.
86 SGeRAC Toolkit for Oracle RAC 10g or later