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This section includes the following topics:• About
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Installing the Precise product suite in a failover application tends to be more complex than installing in a regular application. It is highly recommended that you consult with Precise Customer Support prior to such an installation.
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In a live standby (or active/passive) configuration, an application runs on a primary server, or node. A dedicated secondary, or “backup,” server exists to take over if the primary server fails. The backup server is passive, meaning that it is not performing any other function.
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• An intermediate hardware or software unit that gets client IP packets and routes them to the active servers. In this case, the logical cluster name, which is the cluster IP address and host name, is hidden from the physical server in the cluster.
Preparing servers for Precise in active/passive configurations
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4. Change the Startup type of each created service to Manual.
Post-installation tasks for the Sybase Tier Collector in active/passive configurations
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ii. Run the network_root.sh script from the following folder: .\products\insight\host\install
5. Only if Insight Savvy for Network is installed:
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</ports>
</network>
</simple>
To perform post-installation tasks for Tuxedo Tier agents
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Do not type blanks between <precise_root> and the | character.
What happens in a failover situation (active/passive)
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Figure B-1 Live standby configuration before a failover
The following figure illustrates the live standby configuration after a failover.
Figure B-2 Live standby configuration after a failover
Failover tasks in active/passive configurations
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NOTE Upon failover, you must stop all services before starting them on the active server. Verify that you stop the sentry service first.
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In a parallel partitions cluster (such as Oracle RAC/OPS), an application can run concurrently on more than one server. The different instances either do not share anything or are designed for parallel access of shared resources.
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Figure B-3 Parallel partitions configuration in an Oracle application
Preparing servers for Precise in parallel partitions configurations
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Before installing Oracle Tier agents in parallel partitions configurations, verify that you can perform SQL connect from the physical server and from the PMDB FocalPoint server to each database node by using the physical name and the node name.
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You can add Precise startup and shutdown scripts to your automatic failover procedure by running a command:
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nohup ./infra/bin/psin_infra -handle-agents (stop|start) &
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When installing Precise for SQL Server in a cluster application, you can choose between the following cluster configurations:
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This is the name of the Precise for SQL Server Collector service. You can see the name by opening the Services window in the Control Panel, right-clicking the service, and selecting Properties from the pop-up menu.
7. Click Next.
8. In the Registry Replication dialog box, click Finish.
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8. In the Precise Listener Properties dialog box, on the Advanced tab, in the Restart area, clear the Affect the group check box.
Precise. Performance intelligence from click to storage. Learn more > >
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