Creating a Node-Specific File for the Cluster File System

Perform this procedure for each file that is to maintain node-specific information. The following files are typically required to maintain node-specific information:

• $ORACLE_HOME/network/admin/snmp_ro.ora

• $ORACLE_HOME/network/admin/snmp_rw.ora

For information about other files that might be required to maintain node-specific information, see your Oracle documentation.

How to Create a Node-Specific File for the Cluster File System

1. On each cluster node, create the local directory that will contain the file that is to maintain node-specific information.

   # mkdir -p local-dir

   -p

   Specifies that all nonexistent parent directories are created first

   local-dir

   Specifies the full path name of the directory that you are creating

2. On each cluster node, make a local copy of the global file that is to maintain node-specific information.

   # cp -p global-file local-dir

   -p

   Specifies that the owner, group, permissions modes, modification time, access time, and access control lists are preserved.

   global-file

   Specifies the file name and full path of the global file that you are copying. This file was installed on the cluster file system under the directory that the ORACLE_HOME environment variable specifies.

   local-dir

   Specifies the directory that is to contain the local copy of the file. This directory is the directory that you created in Step 1.

3. Replace the global file that you copied in Step 2 with a symbolic link to the local copy of the file.

   1. From any cluster node, remove the global file that you copied in Step 2.

      # rm global-file

      global-file

      Specifies the file name and full path of the global file that you are removing. This file is the global file that you copied in Step 2.

   2. From any cluster node, create a symbolic link from the local copy of the file to the global file that you removed in Step a.

      # ln -s local-file global-file

      -s

      Specifies that the link is a symbolic link

      local-file

      Specifies that the file that you copied in Step 2 is the source of the link

      global-file

      Specifies that the global version of the file that you removed in Step a is the target of the link

Example 1–2 Creating Node-Specific Files

This example shows the sequence of operations that is required to create node-specific files on a two-node cluster. This cluster is configured as follows:

• The ORACLE_HOME environment variable specifies the /global/oracle directory.

• The local file system on each node is located under the /local directory.

The following operations are performed on each node:

1. To create the local directory that will contain the files that are to maintain node-specific information, the following command is run:

   # mkdir -p /local/oracle/network/admin

2. To make a local copy of the global files that are to maintain node-specific information, the following commands are run:

   # cp -p $ORACLE_HOME/network/admin/snmp_ro.ora \ /local/oracle/network/admin/.

   # cp -p $ORACLE_HOME/network/admin/snmp_rw.ora \ /local/oracle/network/admin/.

The following operations are performed on only one node:

1. To remove the global files, the following commands are run:

   # rm $ORACLE_HOME/network/admin/snmp_ro.ora

   # rm $ORACLE_HOME/network/admin/snmp_rw.ora

2. To create symbolic links from the local copies of the files to their corresponding global files, the following commands are run:

   # ln -s /local/oracle/network/admin/snmp_ro.ora \ $ORACLE_HOME/network/admin/snmp_rw.ora

   # ln -s /local/oracle/network/admin/snmp_rw.ora \ $ORACLE_HOME/network/admin/snmp_rw.ora