A Troubleshooting the Installation Process

This appendix provides troubleshooting information for installing Oracle Clusterware and Oracle Real Application Clusters (RAC). The topic in this appendix is:

Troubleshooting the Oracle Clusterware and RAC Installation

A.1 Troubleshooting the Oracle Clusterware and RAC Installation

This section contains these topics:

General Installation Issues
Real Application Clusters Installation Error Messages
Performing Cluster Diagnostics During Real Application Clusters Installations

A.1.1 General Installation Issues

The following is a list of examples of types of errors that can occur during installation:

Nodes unavailable for selection from the OUI Node Selection screen: Cause: Oracle Clusterware is either not installed, or the Oracle Clusterware services are not up and running.; Action: Install Oracle Clusterware, or review the status of your Oracle Clusterware. Consider restarting the nodes, as doing so may resolve the problem.

Node nodename is unreachable

Cause: Unavailable IP host

Action: Attempt the following:

Run the command ipconfig /all. Compare the output of this command with the contents of the C:\WINNT\system32\drivers\etc\hosts file to ensure that the node IP is listed.
Run the command nslookup to see if the host is reachable.

Time stamp is in the future

Cause: One or more nodes has a different clock time than the local node. If this is the case, then you may see output similar to the following:

time stamp 2005-04-04 14:49:49 is 106 s in the future

Action: Ensure that all member nodes of the cluster have the same clock time.

Administrative user unable to log in to SQL*Plus using the SYSDBA role: Cause: When you install Oracle Database on Microsoft Windows, Oracle Universal Installer creates a Windows local group called ORA_DBA, and then adds your Windows username to it. Members of ORA_DBA automatically receive the SYSDBA privilege. However, for cluster installations, Oracle Universal Installer does not add the user to ORA_DBA if they have performed the installation remotely. As a result, this user cannot log in to SQL*Plus using the SYSDBA role; Action: Manually add remote users to ORA_DBA.

A.1.2 Real Application Clusters Installation Error Messages

Real Application Clusters Management Tools Error Messages are in Oracle Database Oracle Clusterware and Oracle Real Application Clusters Administration and Deployment Guide.

A.1.3 Performing Cluster Diagnostics During Real Application Clusters Installations

If the Oracle Universal Installer (OUI) does not display the Node Selection page, then perform clusterware diagnostics by running the olsnodes -v command from the binary directory in your Oracle Clusterware home, CRS_home\BIN, and analyzing its output. Refer to your clusterware documentation if the detailed output indicates that your clusterware is not running.

In addition, use the following command syntax to check the integrity of the Cluster Manager:

cluvfy comp clumgr -n node_list -verbose

In the preceding syntax example, the variable node_list is the list of nodes in your cluster, separated by commas.