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<title>HA DBMS</title>
<h1>HA DBMS</h1>

HA DBMS in Sun Cluster 2.0 consists of the following:<p>

	HA-INFORMIX	- Highly Available Informix Server<p>
	HA-ORACLE	- Highly Available Oracle Server<p>
	HA-SYBASE	- Highly Available Sybase Server<p>

Each  data service includes  callback programs to start/stop/abort the
data service by calling utilities provided by each DBMS.<p>

Fault monitoring agents  are   also  provided  for all   HA-DBMS  data
services.  The  monitoring programs are  written  in C  to monitor the
health of   the DBMS  by  querying  the database.   If  a  failure  is
detected, a takeover will be initiated by the fault monitoring agent.<p>

All HA-DBMS  data service support  multiple instances  per node.  Each
instance           can       be    configured       independently   by
hainformix/haoracle/hasybase.<p>
