This appendix provides troubleshooting information for installing Oracle Grid Infrastructure.
See Also:
The Oracle Database 11g Oracle RAC documentation set included with the installation media in the Documentation directory:Oracle Clusterware Administration and Deployment Guide
Oracle Real Application Clusters Administration and Deployment Guide
This appendix contains the following topics:
Interpreting CVU "Unknown" Output Messages Using Verbose Mode
Interpreting CVU Messages About Oracle Grid Infrastructure Setup
Performing Cluster Diagnostics During Oracle Grid Infrastructure Installations
The following is a list of examples of types of errors that can occur during installation. It contains the following issues:
Could not execute auto check for display colors using command /usr/X11R6/bin/xdpyinfo
Failed to connect to server, Connection refused by server, or Can't open display
Nodes unavailable for selection from the OUI Node Selection screen
PROT-8: Failed to import data from specified file to the cluster registry
/etc/oratab pointing to a non-existent Oracle home. The OUI log file should show the following error: "java.io.IOException: /home/oracle/OraHome//bin/kfod: not found"/etc/oratab pointing to a non-existing Oracle home.su command to change from a user that is authorized to open an X window to a user account that is not authorized to open an X window on the display, such as a lower-privileged user opening windows on the root user's console display.echo $DISPLAY to ensure that the variable is set to the correct visual or to the correct host. If the display variable is set correctly then either ensure that you are logged in as the user authorized to open an X window, or run the command xhost + to allow any user to open an X window.
If you are logged in locally on the server console as root, and used the su - command to change to the Oracle Grid Infrastructure installation owner, then log out of the server, and log back in as the grid installation owner.
root.sh. Oracle Grid Infrastructure fails to start because the local host entry is missing from the hosts file.
The Oracle Grid Infrastructure alert.log file shows the following:
[/oracle/app/grid/bin/orarootagent.bin(11392)]CRS-5823:Could not initialize agent framework. Details at (:CRSAGF00120:) in /oracle/app/grid/log/node01/agent/crsd/orarootagent_root/orarootagent_root.log 2010-10-04 12:46:25.857 [ohasd(2401)]CRS-2765:Resource 'ora.crsd' has failed on server 'node01'.
You can verify this as the cause by checking crsdOUT.log file, and finding the following:
Unable to resolve address for localhost:2016 ONS runtime exiting Fatal error: eONS: eonsapi.c: Aug 6 2009 02:53:02
$ xhost fully_qualified_remote_host_name
For example:
$ xhost somehost.example.com
Then, enter the following commands, where workstation_name is the host name or IP address of your workstation.
Bourne, Bash, or Korn shell:
$ DISPLAY=workstation_name:0.0
$ export DISPLAY
To determine whether X Window applications display correctly on the local system, enter the following command:
$ xclock
The X clock should appear on your monitor.If the X clock appears, then close the X clock and start Oracle Universal Installer again.
Run the shell command ifconfig -a. Compare the output of this command with the contents of the /etc/hosts file to ensure that the node IP is listed.
Run the shell command nslookup to see if the host is reachable.
As the oracle user, attempt to connect to the node with ssh or rsh. If you are prompted for a password, then user equivalence is not set up properly.
rootupgrade.sh. To confirm, look for the error "utopen:12:Not enough space in the backing store" in the log file Grid_home /log/hostname/client/ocrconfig_pid.log./var/opt/oracle/srvConfig.loc, and copy the contents of this raw device to the new device using the command dd./etc/ssh/sshd_config, and setting it to a value of 0 (unlimited).time stamp 2005-04-04 14:49:49 is 106 s in the future
If you run Cluster Verification Utility using the -verbose argument, and a Cluster Verification Utility command responds with UNKNOWN for a particular node, then this is because Cluster Verification Utility cannot determine if a check passed or failed. The following is a list of possible causes for an "Unknown" response:
The node is down
Common operating system command binaries required by Cluster Verification Utility are missing in the /bin directory in the Oracle Grid Infrastructure home or Oracle home directory
The user account starting Cluster Verification Utility does not have privileges to run common operating system commands on the node
The node is missing an operating system patch, or a required package
The node has exceeded the maximum number of processes or maximum number of open files, or there is a problem with IPC segments, such as shared memory or semaphores
If the Cluster Verification Utility report indicates that your system fails to meet the requirements for Oracle Grid Infrastructure installation, then use the topics in this section to correct the problem or problems indicated in the report, and run Cluster Verification Utility again.
For each node listed as a failure node, review the installation owner user configuration to ensure that the user configuration is properly completed, and that SSH configuration is properly completed. The user that runs the Oracle Grid Infrastructure installation must have permissions to create SSH connections.
Oracle recommends that you use the SSH configuration option in OUI to configure SSH. You can use Cluster Verification Utility before installation if you configure SSH manually, or after installation, when SSH has been configured for installation.
For example, to check user equivalency for the user account oracle, use the command su - oracle and check user equivalence manually by running the ssh command on the local node with the date command argument using the following syntax:
$ ssh nodename date
The output from this command should be the timestamp of the remote node identified by the value that you use for nodename. If you are prompted for a password, then you need to configure SSH. If ssh is in the default location, the /usr/bin directory, then use ssh to configure user equivalence. You can also use rsh to confirm user equivalence.
If you see a message similar to the following when entering the date command with SSH, then this is the probable cause of the user equivalence error:
The authenticity of host 'node1 (140.87.152.153)' can't be established. RSA key fingerprint is 7z:ez:e7:f6:f4:f2:4f:8f:9z:79:85:62:20:90:92:z9. Are you sure you want to continue connecting (yes/no)?
Enter yes, and then run Cluster Verification Utility to determine if the user equivalency error is resolved.
If ssh is in a location other than the default, /usr/bin, then Cluster Verification Utility reports a user equivalence check failure. To avoid this error, navigate to the directory Grid_home/cv/admin, open the file cvu_config with a text editor, and add or update the key ORACLE_SRVM_REMOTESHELL to indicate the ssh path location on your system. For example:
# Locations for ssh and scp commands ORACLE_SRVM_REMOTESHELL=/usr/local/bin/ssh ORACLE_SRVM_REMOTECOPY=/usr/local/bin/scp
Note the following rules for modifying the cvu_config file:
Key entries have the syntax name=value
Each key entry and the value assigned to the key defines one property only
Lines beginning with the number sign (#) are comment lines, and are ignored
Lines that do not follow the syntax name=value are ignored
When you have changed the path configuration, run Cluster Verification Utility again. If ssh is in another location than the default, you also need to start OUI with additional arguments to specify a different location for the remote shell and remote copy commands. Enter runInstaller -help to obtain information about how to use these arguments.
Note:
When you or OUI runssh or rsh commands, including any login or other shell scripts they start, you may see errors about invalid arguments or standard input if the scripts generate any output. You should correct the cause of these errors.
To stop the errors, remove all commands from the oracle user's login scripts that generate output when you run ssh or rsh commands.
If you see messages about X11 forwarding, then complete the task Section 2.14.4, "Setting Display and X11 Forwarding Configuration" to resolve this issue.
If you see errors similar to the following:
stty: standard input: Invalid argument stty: standard input: Invalid argument
These errors are produced if hidden files on the system (for example, .bashrc or .cshrc) contain stty commands. If you see these errors, then refer to Section 2.14.5, "Preventing Installation Errors Caused by Terminal Output Commands" to correct the cause of these errors.
/bin/ping address to check each node address. When you find an address that cannot be reached, check your list of public and private addresses to make sure that you have them correctly configured. If you use third-party vendor clusterware, then refer to the vendor documentation for assistance. Ensure that the public and private network interfaces have the same interface names on each node of your cluster.id command on each node to confirm that the installation owner user (for example, grid or oracle) is created with the correct group membership. Ensure that you have created the required groups, and create or modify the user account on affected nodes to establish required group membership.
See Also:
Section 2.4, "Creating Groups, Users and Paths for Oracle Grid Infrastructure" for instructions about how to create required groups, and how to configure the installation owner userThe Oracle Grid Infrastructure alert log is the first place to look for serious errors. In the event of an error, it can contain path information to diagnostic logs that can provide specific information about the cause of errors.
After installation, Oracle Grid Infrastructure posts alert messages when important events occur. For example, you might see alert messages from the Cluster Ready Services (CRS) daemon process when it starts, if it aborts, if the failover process fails, or if automatic restart of a CRS resource failed.
Oracle Enterprise Manager monitors the Clusterware log file and posts an alert on the Cluster Home page if an error is detected. For example, if a voting disk is not available, a CRS-1604 error is raised, and a critical alert is posted on the Cluster Home page. You can customize the error detection and alert settings on the Metric and Policy Settings page.
The location of the Oracle Grid Infrastructure log file is CRS_home/log/hostname/alerthostname.log, where CRS_home is the directory in which Oracle Grid Infrastructure was installed and hostname is the host name of the local node.
The following issues can occur on IBM AIX release 6.1:
/bin/oslevel 6.1.4.0 /bin/oslevel -s 6100-04-01-0944
This issue is caused by AIX incorrectly reporting the operating system level. In this example, the value returned by /bin/oslevel should be 6.1.0.0.
If 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 Grid Infrastructure home (Grid_home/bin on Linux and UNIX-based systems, and Grid_home\BIN on Windows-based systems) 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.
Starting with Oracle Grid Infrastructure 11g release 2 (11.2.0.3) and later, you can use the CVU healthcheck command option to check your Oracle Grid Infrastructure and Oracle Database installations for their compliance with mandatory requirements and best practices guidelines, and to check to ensure that they are functioning properly.
Use the following syntax to run the healthcheck command option:
cluvfy comp healthcheck [-collect {cluster|database}] [-db db_unique_name] [-bestpractice|-mandatory] [-deviations] [-html] [-save [-savedir directory_path]
For example:
$ cd /home/grid/cvu_home/bin $ ./cluvfy comp healthcheck -collect cluster -bestpractice -deviations -html
The options are:
-collect [cluster|database]
Use this flag to specify that you want to perform checks for Oracle Grid Infrastructure (cluster) or Oracle Database (database). If you do not use the collect flag with the healthcheck option, then cluvfy comp healthcheck performs checks for both Oracle Grid Infrastructure and Oracle Database.
-db db_unique_name
Use this flag to specify checks on the database unique name that you enter after the db flag.
CVU uses JDBC to connect to the database as the user cvusys to verify various database parameters. For this reason, if you want checks to be performed for the database you specify with the -db flag, then you must first create the cvusys user on that database, and grant that user the CVU-specific role, cvusapp. You must also grant members of the cvusapp role select permissions on system tables.
A SQL script is included in CVU_home/cv/admin/cvusys.sql to facilitate the creation of this user. Use this SQL script to create the cvusys user on all the databases that you want to verify using CVU.
If you use the db flag but do not provide a database unique name, then CVU discovers all the Oracle Databases on the cluster. If you want to perform best practices checks on these databases, then you must create the cvusys user on each database, and grant that user the cvusapp role with the select privileges needed to perform the best practice checks.
[-bestpractice | -mandatory] [-deviations]
Use the bestpractice flag to specify best practice checks, and the mandatory flag to specify mandatory checks. Add the deviations flag to specify that you want to see only the deviations from either the best practice recommendations or the mandatory requirements. You can specify either the -bestpractice or -mandatory flag, but not both flags. If you specify neither -bestpractice or -mandatory, then both best practices and mandatory requirements are displayed.
-html
Use the html flag to generate a detailed report in HTML format.
If you specify the html flag, and a browser CVU recognizes is available on the system, then the browser is started and the report is displayed on the browser when the checks are complete.
If you do not specify the html flag, then the detailed report is generated in a text file.
-save [-savedir dir_path]
Use the save or -save -savedir flags to save validation reports (cvuchecdkreport_timestamp.txt and cvucheckreport_timestamp.htm), where timestamp is the time and date of the validation report.
If you use the save flag by itself, then the reports are saved in the path CVU_home/cv/report, where CVU_home is the location of the CVU binaries.
If you use the flags -save -savedir, and enter a path where you want the CVU reports saved, then the CVU reports are saved in the path you specify.
If you plan to use multiple network interface cards (NICs) for the interconnect, and you do not configure them during installation or after installation with Redundant Interconnect Usage, then you should use a third party solution to aggregate the interfaces at the operating system level. Otherwise, the failure of a single NIC will affect the availability of the cluster node.
If you use aggregated NIC cards, and use the Oracle Clusterware Redundant Interconnect Usage feature, then they should be on different subnets. If you use a third-party vendor method of aggregation, then follow the directions for that vendor's product.
If you encounter errors, then carry out the following system checks:
Verify with your network providers that they are using correct cables (length, type) and software on their switches. In some cases, to avoid bugs that cause disconnects under loads, or to support additional features such as Jumbo Frames, you may need a firmware upgrade on interconnect switches, or you may need newer NIC driver or firmware at the operating system level. Running without such fixes can cause later instabilities to Oracle RAC databases, even though the initial installation seems to work.
Review VLAN configurations, duplex settings, and auto-negotiation in accordance with vendor and Oracle recommendations.
If your installation reports errors related to the SCAN VIP addresses or listeners, then check the following items to make sure your network is configured correctly:
Check the file /etc/resolv.conf - verify the contents are the same on each node
Verify that there is a DNS entry for the SCAN, and that it resolves to three valid IP addresses. Use the command nslookup scan-name; this command should return the DNS server name and the three IP addresses configured for the SCAN.
Use the ping command to test the IP addresses assigned to the SCAN; you should receive a response for each IP address.
Note:
If you do not have a DNS configured for your cluster environment, then you can create an entry for the SCAN in the/etc/hosts file on each node. However, using the /etc/hosts file to resolve the SCAN results in having only one SCAN available for the entire cluster instead of three. Only the first entry for SCAN in the hosts file is used.Ensure the SCAN VIP uses the same netmask that is used by the public interface.
If you need additional assistance troubleshooting errors related to the SCAN, SCAN VIP or listeners, then refer to My Oracle Support. For example, the note with Doc ID 1373350.1 contains some of the most common issues for the SCAN VIPs and listeners.
The following is a list of issues involving storage configuration:
With Oracle Grid Infrastructure release 11.2 and later, if you remove a filesystem by mistake, or encounter another storage configuration issue that results in losing the Oracle Local Registry or otherwise corrupting a node, you can recover the node in one of two ways:
Restore the node from an operating system level backup (preferred)
Remove the node, and then add the node. With 11.2 and later clusters, profile information for is copied to the node, and the node is restored.
The feature that enables cluster nodes to be removed and added again, so that they can be restored from the remaining nodes in the cluster, is called Grid Plug and Play (GPnP). Grid Plug and Play eliminates per-node configuration data and the need for explicit add and delete nodes steps. This allows a system administrator to take a template system image and run it on a new node with no further configuration. This removes many manual operations, reduces the opportunity for errors, and encourages configurations that can be changed easily. Removal of the per-node configuration makes the nodes easier to replace, because they do not need to contain individually-managed state.
Grid Plug and Play reduces the cost of installing, configuring, and managing database nodes by making their per-node state disposable. It allows nodes to be easily replaced with regenerated state.
Initiate recovery of a node using addnode syntax similar to the following, where lostnode is the node that you are adding back to the cluster:
If you are using Grid Naming Service (GNS):
$ ./addNode.sh -silent "CLUSTER_NEW_NODES=lostnode"
If you are not using GNS:
$ ./addNode.sh -silent "CLUSTER_NEW_NODES={lostnode}" "CLUSTER_NEW_VIRTUAL_HOSTNAMES={lostnode-vip}"
Note that you require access to root to be able to run the root.sh script on the node you restore, to recreate OCR keys and to perform other configuration tasks. When you see prompts to overwrite your existing information in /usr/local/bin, accept the default (n):
The file "dbhome" already exists in /usr/local/bin. Overwrite it? (y/n) [n]: The file "oraenv" already exists in /usr/local/bin. Overwrite it? (y/n) [n]: The file "coraenv" already exists in /usr/local/bin. Overwrite it? (y/n) [n]: