Managing HP Serviceguard Extension for SAP for Linux (May 2013)

Contents
1 Overview..................................................................................................5
About this manual....................................................................................................................5
Related documentation..............................................................................................................5
2 SAP cluster concepts...................................................................................7
SAP-specific cluster modules.......................................................................................................7
Configuration restrictions...........................................................................................................9
Example 1: Robust failover using the one package concept............................................................9
Example 2: A mutual failover scenario.......................................................................................11
Example 3: Follow-and-push with automated enqueue replication..................................................12
Example 4: Realization of the SAP-recommended SPOF isolation..................................................15
Example 5: Dedicated failover host...........................................................................................15
Dedicated NFS packages........................................................................................................16
Virtualized dialog instances for adaptive enterprises....................................................................17
Handling of redundant dialog instances....................................................................................17
3 SAP cluster administration..........................................................................19
Performing cluster administration on the System Management Homepage (SMH)............................19
Performing SAP administration with SAP's startup framework .......................................................21
Change management.............................................................................................................25
System level changes..........................................................................................................25
SAP software changes........................................................................................................26
Ongoing verification of package failover capabilities..................................................................27
Upgrading SAP software.........................................................................................................28
Package conversion................................................................................................................28
4 SAP cluster storage layout planning............................................................30
SAP Instance storage considerations..........................................................................................30
Option 1: SGeSAP NFS cluster.............................................................................................30
Common directories that are kept local............................................................................31
Directories that Reside on Shared Disks............................................................................31
Option 2: SGeSAP NFS idle standby cluster..........................................................................34
Common directories that are kept local............................................................................34
Directories that reside on shared disks.............................................................................35
Database instance storage considerations..................................................................................35
Oracle single instance RDBMS.................................................................................................36
Oracle databases in SGeSAP NFS and NFS Idle standby clusters.............................................36
MaxDB/liveCache storage considerations..................................................................................37
Sybase ASE storage considerations...........................................................................................40
IBM DB2 storage considerations...............................................................................................40
Special liveCache storage considerations...................................................................................40
Option 1: Simple cluster with separated packages..................................................................41
Option 2: Non-MaxDB environments....................................................................................41
5 Clustering SAP using SGeSAP packages......................................................42
Overview..............................................................................................................................42
Three phase approach........................................................................................................42
SGeSAP modules and services.............................................................................................43
SGeSAP modules..........................................................................................................43
SGeSAP services...........................................................................................................43
Installation options.............................................................................................................44
Serviceguard Manager GUI and Serviceguard CLI............................................................45
SGeSAP easy deployment..............................................................................................46
Contents 3