Kbase 34286: Is the Progress Enterprise Database suitable to run on an IBM AIX HACMP-cluster?
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
5/10/1998 |
|
Solution ID: P4286
GOAL:
Is the Progress Enterprise Database suitable to run on an IBM AIX HACMP-cluster?
GOAL:
Does Progress support clustering?
FACT(s) (Environment):
IBM AIX
FIX:
Progress does not support the same database running in multiple machines or nodes in a cluster environment, this configuration is used for performance reasons. For cluster failover purpose Progress offers a product called Fathom High Availability Cluster.
Fathom High Availability Cluster works together with IBM HACMP technology and provides an automated way to move the database resources from another node in case of a failure on the primary node.
Without Fathom High Availability Cluster product, the user have the option to configure scripts to control the failover event and move the database resources to another machine. It is very important to mention that these scripts have tailored manually by the system administrator.
This is an example of a failover configuration: if node 1 fails, a backup node is in place that will use the database crash recovery mechanism to restart all database functions. As long as the failover processes, caching etc. are transparent for the db engine, then there should be no issues.
The only thing HACMP does is make sure that the right disks are mounted and the system gets the right IP-address. The startup and shutdown scripts are equal on both local disks. The database disks are shared between the production- and stand-by box.