Verifying the systems for Oracle RAC installation
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Verifying the systems for Oracle RAC installation

Run the SF Oracle RAC installer to verify that the cluster configuration settings are conducive for a successful Oracle RAC installation.

Table: List of checks lists the checks performed by the installer on each node. For information on resolving issues that you may encounter during the process, see the Veritas Storage Foundation for Oracle RAC Administrator's Guide, Chapter: Troubleshooting SF Oracle RAC, Section: Troubleshooting installation and configuration check failures.

Table: List of checks

Check

Description

Time synchronization

The time settings are synchronized across nodes. If the time difference exceeds five seconds, the check fails.

System checks

All the nodes in the cluster have the same architecture.

For example, the nodes in the cluster must be either Solaris SPARC systems or Solaris x64 systems.

All the nodes in the cluster have the same number and type of processors.

Operating system and patch level checks

All the nodes in the cluster have the same operating system version and patch levels.

Kernel parameter

Verifies that the kernel parameter settings and tunables are in accordance with Oracle RAC recommendations.

LLT checks

The LLT checks are performed on only two links, the first and the last link specified in the /etc/llttab file.

Verifies that the media speed setting for the links are set to full duplex. If the links are not set to full duplex, the check fails.

Verifies that the media speed and auto-negotiation settings are the same across all nodes in the cluster.

The check fails if the settings vary across the nodes and if auto-negotiation is enabled for the interface on any node in the cluster.

Verifies that the payload (MTU) for the jumbo frames is between 1500 and 9000 bytes. Verifies that this setting is the same for all LLT links in the cluster. The check fails if the value is different for different LLT links in the cluster.

Verifies that the links are not cross-connected. If the links are cross-connected, the check fails. Make sure that the links do not have a direct path of communication through switch interconnects.

Verifies that the cluster has at least two high-priority links that do not belong to the public network.

Verifies that the cluster configuration in the /etc/llthosts file is the same on all nodes in the cluster.

Verifies that the cluster ID in the /etc/llttab file is the same on all the nodes.

I/O fencing checks

Verifies that I/O fencing is enabled on each node in the cluster.

Note:

The verification applies only for disk-based fencing.

Verifies that all nodes in the cluster have registered keys with the coordinator disks. If registration keys are missing for any node in the cluster, the check fails for that node.

The possible causes for check failure are:

  • Fencing is not configured on the cluster.

  • Fencing is configured in disabled mode.

  • Fencing is configured using CPS.

ODM checks

Verifies that port d is up and running on the nodes.The check fails if the port is not up.

The possible causes for check failure are:

  • ODM is not running in the cluster.

  • ODM is running in standalone mode.

VCSMM checks

Verifies that port o is up and running on the nodes.The check fails if port o is not up.

GAB checks

Verifies that the ports a, b, d, f, h, o, v, w are up and running on the nodes. The check fails if any of the SF Oracle RAC components are not running.

LMX checks

Verifies that the LMX helper thread is disabled. The check fails if the helper thread is enabled.

To verify the systems for Oracle RAC installation

  1. Start the SF Oracle RAC installer:

    # cd /opt/VRTS/install
    # ./installsfrac -configure galaxy nebula

  2. Enter 2 to select the option SF Oracle RAC Installation and Configuration Checks.

    1)  Configure SF Oracle RAC sub-components
2)  SF Oracle RAC Installation and Configuration Checks
3)  Prepare to Install Oracle
4)  Install Oracle Clusterware and Database
5)  Post Oracle Installation Tasks
6)  Exit SF Oracle RAC Configuration
Choose option: [1-6,q] (1) 2

    The installer displays the location of the temporary log file and starts the verification process.

  3. Enter n to return to the menu.

    Is Oracle installed on the system(s) [y,n,q] (y) n
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