Veritas Storage Foundation 5.1 SP1 for Oracle RAC Release Notes (5900-1513, April 2011)

is enabled, the agent considers the current traffic on all devices and calculates a

"winner" device with lower traffic. If load balancing is not enabled, the IP address

is failed over to the link with the lower network ID.

New CRSResource agent

The CRSResource agent provides an alternative mechanism for monitoring the

Oracle database in the absence of the VCS Oracle agent. It is useful in scenarios

where the database is not managed by VCS and the applications need to be started

using VCS after Oracle Clusterware starts the database. It checks the status of the

Oracle Clusterware resources, which include the Oracle database instance, the

listener, and the virtual IP address (VIP). The agent supports multiple database

configurations and ensures that the Oracle database is online and available to an

application when it starts.

Support for health checks on SF Oracle RAC cluster

SF Oracle RAC provides a health check utility that evaluates the components and

configuration in an SF Oracle RAC cluster. It gathers real-time operational

information on cluster components and reports any deviations or warnings that

may degrade performance or cause cluster issues.

The utility evaluates the health of the following components in the cluster:

■ Low Latency Transport (LLT)

■ LLT Multiplexer (LMX)

■ I/O fencing

■ Oracle Clusterware

■ PrivNIC

Utility to view LMX bandwidth used for database traffic

The lmxdbstat utility can be used to determine the LMX bandwidth used for

database traffic for each database. The utility is located at /sbin/lmxdbstat.

The utility reports the following information:

■ Status of the LMX protocol

■ The LMX port and buffer traffic received and transmitted at periodic intervals

in packets and kilobytes for each database instance.

■ The LMX port and buffer traffic received and transmitted at periodic intervals

in packets and kilobytes for a database process.

Storage Foundation for Oracle RAC Release Notes

Changes introduced in version 5.1 Service Pack 1