5 Installing Cluster Environments

Oracle Clusterware and Vendor Clusterware Installations

The Oracle Universal Installer installs Oracle Clusterware on each node on which the Oracle Universal Installer detects that third-party vendor clusterware is present. If third-party vendor clusterware is not present, you must use the Oracle Universal Installer to enter the nodes on which you want the Oracle Clusterware to be installed. The Oracle Clusterware home can be either shared by all nodes, or private to each node, depending on your responses when you run the Oracle Universal Installer.

When third-party vendor clusterware is present, Oracle Clusterware can interact with the third-party vendor clusterware. In using third-party vendor clusterware, note that Oracle Clusterware can integrate with third-party vendor clusterware for all operating systems except Linux and Windows. You need to have Oracle Cluster Registry and Voting Disks shared across all nodes.

Installed Oracle Real Application Clusters Components

All instances in an Oracle Real Application Clusters environment share the control file, server parameter file, redo log files, and all data files. These files reside on a shared cluster file system or on shared disks. Either of these types of file configurations are accessed by all the cluster database instances. Each instance also has its own set of redo log files. During failures, shared access to redo log files enables surviving instances to perform recovery.

Hardware Requirements for Oracle Real Application Clusters Setup

Each node in a cluster requires the following hardware:

• External shared disks for storing the Oracle Clusterware files.

  See the Oracle Real Application Clusters Installation Guide 11g Release 2 (11.2) for information on the available disk configuration options. Review these options before you decide which storage option to use in your Oracle Real Application Clusters environment.

• One private Internet protocol (IP) address for each node to serve as the private interconnect. The following must be true for each private IP address:

  – It must be separate from the public network.– It must be accessible on the same network interface on each node.– It must have a unique address on each node.The private interconnect is used for inter-node communication by both Oracle Clusterware and Oracle Real Application Clusters. If the private address is available from a network name server (DNS), you can use that name. Otherwise, the private IP address must be available in each node's /etc/hosts file on UNIX and %SystemRoot%\system32\drivers\etc\hosts on Windows.

  During Oracle Clusterware installation, the information you enter as the private IP address determines which private interconnects are used by Oracle Real Application Clusters database instances.

• One public IP address for each node to be used as the Virtual IP address for client connections and for connection failover.

  This public Virtual IP address (VIP) must be associated with the same interface name on every node that is part of your cluster. Additionally, the IP addresses that you use for all of the nodes that are part of a cluster must be from the same subnet. If you have a domain name server (DNS), register the host names for the VIP with DNS. The Virtual IP address should not be in use at the time of the installation, because this is a Virtual IP address that Oracle manages.

• One public fixed host name address for each node, typically assigned by the system administrator during operating system installation. If you have a DNS, register both the fixed IP and the VIP address with DNS. If you do not have DNS, you must make sure that both public IP addresses are in the node host file.

Software Requirements for Oracle Real Application Clusters Setup

Each node in a cluster requires a supported interconnect software protocol to support Cache Fusion, and to support Oracle Clusterware polling. Your interconnect must be certified by Oracle for your platform. You should also have a Web browser, both to enable Oracle Enterprise Manager, and to view online documentation. For Oracle Database 11g requirements, Oracle Clusterware provides the same functionality as third-party vendor clusterware. Using Oracle Clusterware also reduces installation and support complications. However, you may require third-party vendor clusterware if you use a non-ethernet interconnect, or if you have deployed clusterware-dependent applications on the same cluster where you deploy Oracle Real Application Clusters.

Logging In to the System as root

Before you install the Oracle software, you must complete several tasks as the root user. To log in as the root user, complete one of the following procedures:

• If you are installing the software from an X Window System workstation or X terminal, then:

  1. Start a local terminal session, for example, an X terminal (xterm).

  2. If you are not installing the software on the local system, enter the following command to enable remote hosts to display X applications on the local X server:

     $ xhost +
     

  3. If you are not installing the software on the local system, use the ssh, rlogin, or telnet command to connect to the system where you want to install the software:

     $ telnet remote_host
     

  4. If you are not logged in as the root user, enter the following command to switch user to root:

     $ su - root
     password:
     #
     

• If you are installing the software from a PC or other system with X server software installed:

  1. Start the X server software.

  2. Configure the security settings of the X server software to permit remote hosts to display X applications on the local system.

  3. Connect to the remote system where you want to install the software and start a terminal session on that system, for example, an X terminal (xterm).

  4. If you are not logged in as the root user on the remote system, enter the following command to switch user to root:

     $ su - root
     password:
     #
     

Creating Required UNIX Groups and Users

Depending on whether it is the first time an Oracle software product is being installed on a system and on the products that you are installing, you may need to create several UNIX groups and a UNIX user account. The following UNIX group and users are required for all installations:

• The Oracle Inventory group (oinstall)

  You must create this group the first time you install Oracle software on the system. The usual name chosen for this group is oinstall. This group owns the Oracle inventory, which is a catalog of all Oracle software installed on the system.

  Note:

  If Oracle software is already installed on the system, the existing Oracle Inventory group must be the primary group of the UNIX user that you use to install new Oracle software. The following sections describe how to identify an existing Oracle Inventory group.

• The Oracle software owner user (oracle)

  You must create this user the first time you install Oracle software on the system. This user owns all of the software installed during the installation. The usual name chosen for this user is oracle. This user must have the Oracle Inventory group as its primary group.

You need to create other groups and users in addition to the ones created above. For more information on creating the required groups and users, see the Oracle Real Application Clusters Installation Guide 11g Release 2 (11.2).

Configuring the Oracle User Environment

You run Oracle Universal Installer from the oracle account. However, before you start Oracle Universal Installer you must configure the environment of the oracle user. For more information on configuring the environment, see the Oracle Real Application Clusters Installation Guide 11g Release 2 (11.2).

Checking the Hardware Requirements

Each system must meet certain minimum hardware requirements. For more information on hardware requirements, see the Oracle Real Application Clusters Installation Guide 11g Release 2 (11.2).

Checking the Network Requirements

There are some minimum networking hardware and Internet protocol (IP) address requirements. Check that you have the networking hardware and Internet protocol (IP) address required for an Oracle Real Application Clusters installation.

Checking Software Requirements

The Oracle Universal Installer performs checks on your system to verify that it meets the requirements listed for your platform. To ensure that these checks pass, verify the requirements before you start the Installer.

Depending on the Oracle products that you intend to install, verify that the required software is installed on the system. For more information on software requirements, see the Oracle Real Application Clusters Installation Guide 11g Release 2 (11.2).

Configuring Kernel Parameters

Each cluster node must meet the recommended kernel values. For information on verifying and setting the kernel parameters, see the Oracle Real Application Clusters Installation Guide 11g Release 2 (11.2).

Identifying Required Software Directories

You must identify or create the following directories for the Oracle software as follows:

• Oracle Base Directory

• Oracle Inventory Directory

• Oracle Clusterware Home Directory

• Oracle Home Directory

The following subsections describe the requirements for these directories.

/mount_point/app/oracle_sw_owner

/u01/app/oracle

/u01/app/orauser

/opt/oracle/app/oracle

oracle_base/../oraInventory

/u01/crs/oracle/product/11.2.0/app

oracle_base/product/11.2.0/db_1

Identifying or Creating an Oracle Base Directory

Before starting the installation, you must either identify an existing Oracle base directory or, if required, create one. For more information on identifying or creating an Oracle Base Directory, see the Oracle Real Application Clusters Installation Guide 11g Release 2 (11.2).

Creating the Clusterware Home Directory

Oracle Universal Installer creates the Oracle Clusterware home directory for you. Ensure before you start the installation that you provide sufficient disk space on a file system for the Oracle Clusterware directory, and the parent directory of the Oracle Clusterware directory space is writable by the Oracle user.

To create the Oracle Clusterware home directory and specify the correct owner, group, and permissions for it, follow these steps:

1. Enter commands similar to the following to create the recommended subdirectories in the mount point directory that you identified, and set the appropriate owner, group, and permissions on them:

   # mkdir -p /mount_point/crs/oracle_sw_owner/product/11.2.0/crs
   # chown -R root:oinstall /mount_point/crs
   # chmod -R 775 /mount_point/crs/oracle_sw_owner
   

   If the mount point you identified is /u01, the recommended Oracle Clusterware home directory path is as follows:

   /u01/crs/oracle/product/11.2.0/crs
   

2. If necessary, repeat the commands listed in the previous step to create the same directory on the other nodes in the cluster.

3. Enter commands similar to the following to set the ORACLE_BASE and ORACLE_HOME environment variables in preparation for the Oracle Clusterware installation:

   • Bourne, Bash, or Korn shell:

     $ ORACLE_BASE=/u01/app/oracle
     $ ORACLE_HOME=/u01/crs/oracle/product/11.2.0/crs
     $ export ORACLE_BASE
     $ export ORACLE_HOME
     

   • C shell:

     % setenv ORACLE_BASE /u01/app/oracle
     % setenv ORACLE_HOME /u01/crs/oracle/product/11.2.0/crs
     

4. Enter the following commands to ensure that the TNS_ADMIN environment variable is not set:

   • Bourne, Bash, or Korn shell:

     $ unset TNS_ADMIN
     

   • C shell:

     % unsetenv TNS_ADMIN
     

5. To verify that the environment has been set correctly, enter the following commands:

   $ umask
   $ env | more
   

   Verify that the umask command displays a value of 22, 022, or 0022, and the environment variables that you set in this section have the correct values.

Checking Hardware and Software Certification

Oracle recommends you to review the certification matrix on the OracleMetaLink Web site for the most up-to-date list of certified hardware platforms and operating system versions for Oracle software. This Web site also provides patches and workaround information for bugs. For more information on accessing the OracleMetaLink site, see "Download and Install Patches".

Checking the Hardware Requirements

Each system must meet minimum hardware requirements. For more information on hardware requirements and the steps involved to check them, see the Oracle Real Application Clusters Installation Guide 11g Release 2 (11.2).

Checking the Software Requirements

Each system must meet minimum software requirements. For more information on software requirements and the steps involved to check them, see the Oracle Real Application Clusters Installation Guide 11g Release 2 (11.2).

Checking the Network Requirements

There are some minimum networking hardware and Internet protocol (IP) address requirements. Check that you have the networking hardware and Internet protocol (IP) address required for an Oracle Real Application Clusters installation. For more information on the steps involved in checking these requirements, see the Oracle Real Application Clusters Installation Guide 11g Release 2 (11.2).

Checking Individual Component Requirements

Depending on the Oracle products that you intend to install, verify the required components for the Oracle software you are installing and ensure they are installed on the system. You can find more information on the components in the Oracle Real Application Clusters Installation Guide 11g Release 2 (11.2).

Running the Oracle Universal Installer to Install Oracle Clusterware

Complete the following steps to install Oracle Clusterware on your cluster. At any time during installation, if you have a question about what you are being asked to do, click Help in the Oracle Universal Installer page.

1. Start the runInstaller command with the -formCluster option from the main directory on the Oracle Clusterware 11g Release 2 (11.2) CD-ROM. This is a separate CD that contains the Oracle Clusterware software. When the Oracle Universal Installer displays the Welcome page, click Next.

2. Oracle Universal Installer displays the Installation Prerequisite Checks page. This screen shows the name, type, and status for all prerequisite checks designed for the installation. Click Next.

3. Oracle Universal Installer displays the Specify Cluster Nodes for Node Addition page. Specify public, private, virtual IPs in this page and click Next.

4. Oracle Universal Installer displays the Specify Local Host Name page. Specify at least one public and one private interface in this page and click Next.

5. Specify the Oracle Cluster Registry location option to provide a redundant OCR location and click Next.

6. Specify the VD (Voting Disk Location) location option to provide redundant VD locations and click Next.

7. Oracle Universal Installer displays the Summary page. Click Install and proceed.

8. After the installation is done, Oracle Universal Installer prompts you to run orainstRoot.sh and root.sh. You need to run these scripts and click OK.

9. After you run root.sh on all of the nodes, the Oracle Universal Installer runs the Oracle Notification Server Configuration Assistant and Oracle Private Interconnect Configuration Assistant. These assistants run without user intervention.

10. Oracle Universal Installer displays the End of Installation page. Click Exit.

Running the Oracle Universal Installer in Silent Mode to Install Oracle Clusterware

You can run the Oracle Universal Installer in silent mode to install Oracle Clusterware by entering the following command:

./runInstaller -silent -responseFile <response file path>

For Oracle Clusterware, you need to use the -formCluster flag. You can pass session variables like nodelist, ocr, voting disk location, and so forth from the command line for silent installation.

Oracle Clusterware Background Processes

The following processes must be running in your environment after the Oracle Clusterware installation for Oracle Clusterware to function:

• oprocd — Process monitor for the cluster.

• evmd — Event manager daemon that starts the racgevt process to manage call-outs.

• ocssd — Manages cluster node membership and runs as the Oracle user; failure of this process results in node restart.

• crsd — Performs high availability recovery and management operations such as maintaining the OCR. Also manages application resources and runs as the root user and restarts automatically upon failure.

Running the Oracle Universal Installer to Install Oracle Clusterware

Complete the following steps to install Oracle Clusterware on your cluster. At any time during installation, if you have a question about what you are being asked to do, click Help in the Oracle Universal Installer page.

1. Log in to Windows with Administrative privileges and run the setup.exe command on the Oracle Clusterware media. This opens the Oracle Universal Installer Welcome page.

2. After you click Next in the Welcome page, the Specify File Locations page enables you to accept the displayed path name for the Oracle Clusterware products or select a different one. You can also accept default directory and path name for the location of your Clusterware home or browse for an alternate directory and destination. You must select a destination that exists on each cluster node that is part of this installation. Click Next to confirm your choices and proceed to the Language Selection page.

3. Select the language or languages for your Oracle Clusterware installation in the Language Selection page, then click Next for the Cluster Configuration page.

4. The Cluster Configuration page contains predefined node information if the Oracle Universal Installer detects that your system has the Oracle 10g Release 2 Clusterware. Otherwise, the Oracle Universal Installer displays the Cluster Configuration page without predefined node information.

   Provide your own cluster name if you do not want to use the name provided by the Oracle Universal Installer. Note that the selected cluster name must be globally unique throughout the enterprise, and its allowable character set is the same as that for host names; that is, underscores (_), hyphens (-), and single-byte alphanumeric characters (a to z, A to Z, and 0 to 9).

   Enter a public and a private host name for each node. Neither the public nor the private name should have a domain qualifier. When you enter the public host name, use the primary host name of each node; that is, the name displayed by the hostname command. The private node refers to an address that is only accessible by the other nodes in this cluster, and which Oracle uses for Cache Fusion processing. You can enter either a private host name or a private IP address for each node.

   Click Next after you have entered the cluster configuration information. This saves your entries and opens the Specify Network Interface Usage page.

5. In the Specify Network Interface Usage page, the Oracle Universal Installer displays a list of cluster-wide interfaces. Use the drop-down menus on this page to classify each interface as Public, Private, or Do Not Use. The default setting for each interface is Do Not Use. You must classify at least one interconnect as Public and one as Private. Click Next when you have made your selections to open the Select Disk Formatting Options page.

6. In the Select Disk Formatting Options page, you indicate what OCFS you want the Oracle Universal Installer to format for you.

   The formatting options are as follows:

   • Format two logical drives for data and software storage. In this case, the Oracle Universal Installer creates two cluster file systems, one for the database files and one for the Oracle home. The OCR and voting disk are created in the data file directory.

   • Format one logical drive for software storage. In this case, the Oracle Universal Installer creates one cluster file system for the Oracle home and requires two additional partitions, one for the OCR and one for the voting disk. If you select this option, you must have already configured the partitions before proceeding with the installation. These partitions are stamped with "ocrcfg" for the OCR and "votedsk" for the voting disk.

   • Format one logical drive for data file storage. In this case, the Oracle Universal Installer creates one cluster file system for the database files which is also used to store the OCR and voting disk.

   • Do not format any logical drives. In this case, the Oracle Universal Installer requires two partitions: one for the OCR and one for the voting disk. If you select this option, you must have already configured the partitions before proceeding with the installation. These partitions are stamped with "ocrcfg" for the OCR and "votedsk" for the voting disk.

   Click Next after making your selection in the Select Disk Formatting Options page. The next page that the Oracle Universal Installer displays depends on your selection on the Select Disk Formatting Options page, as described in the following step.

7. If you selected the "Format two logical drives for data and software storage" option on the Select Disk Formatting Options page, you must complete the Select Software Storage Drive page and the Select Data Storage Drive page as described in Steps a and b, respectively.

   If you selected the "Format one logical drive for software storage" option on the Select Disk Formatting Options page, you must complete the Select Software Storage Drive page, the Disk Configuration - Oracle Cluster Registry (OCR) page, and the Disk Configuration - Voting Disk page as described in Steps a, c, and d, respectively.

   If you selected the "Format one logical drive for data file storage" option on the Select Disk Formatting Options page, you must complete the Select Data Storage Drive page as described in Step b.

   If you selected the "Do not format any logical drives" option on the Select Disk Formatting Options page, you must complete the Disk Configuration - Oracle Cluster Registry (OCR) page and the Disk Configuration - Voting Disk page as described in Steps c and d, respectively.

   1. On the Select Software Storage Drive page, choose a shared drive to see a list of available partitions on that drive. Choose a partition with sufficient space to hold your Oracle home and select the partition's disk number and partition number from the list. Click Next to proceed.

   2. On the Select Data Storage Drive page, choose a shared drive to see a list of available partitions on that drive. Choose a partition with sufficient space to hold your database files and select the partition's disk number and partition number from the list. Click Next to proceed.

   3. On the Disk Configuration - Oracle Cluster Registry (OCR) page, choose a partition with sufficient space to hold your OCR and select the partition's disk number and partition number from the list. Click Next to proceed.

   4. On the Disk Configuration - Voting Disk page, choose a partition with sufficient space to hold your voting disk and select the partition's disk number and partition number from the list. Click Next to proceed.

      Note:

      The Oracle Universal Installer pages described in this step displays logical drives from which you must make your selections. To be valid for selection, a logical drive must be located on a disk without a primary partition.

8. After you click Next, the Oracle Universal Installer checks whether the remote inventories are set. If they are not set, the Oracle Universal Installer sets up the remote inventories by setting registry keys. The Oracle Universal Installer also verifies the permissions to enable writing to the inventory directories on the remote nodes. After completing these actions, the Oracle Universal Installer displays a Summary page that shows the cluster node information along with the space requirements and availability. Verify the installation that the Oracle Universal Installer is about to perform and click Finish.

9. When you click Finish, the Oracle Universal Installer installs the OCFS and Oracle Clusterware software on the local node and validates the installation again. The Oracle Universal Installer also creates any required OCFS file systems. After validating the installation, the Oracle Universal Installer completes the Oracle Clusterware software installation and configuration on the remote nodes.

Running the Oracle Universal Installer in Silent Mode to Install Oracle Clusterware

You can run the Oracle Universal Installer in silent mode to install Oracle Clusterware by entering the following command:

./setup.exe -silent -responseFile <response file path>

For Oracle Clusterware, you need to use the -formCluster flag. You can pass session variables like nodelist, ocr, voting disk location, and so forth from the command line for silent installation.

Oracle Clusterware Background Processes

The following processes must be running in your environment after the Oracle Clusterware installation for Oracle Clusterware to function:

• oprocd — Process monitor for the cluster.

• evmd — Event manager daemon that starts the racgevt process to manage call-outs.

• ocssd — Manages cluster node membership and runs as the Oracle user; failure of this process results in node restart.

• crsd — Performs high availability recovery and management operations such as maintaining the OCR. Also manages application resources and runs as the root user and restarts automatically upon failure.

Cluster Detection

When Oracle Universal Installer detects that the destination you entered on the File Locations page is part of a cluster, one of two dialogs appear:

• If the Oracle home name entered is new, the Specify Hardware Installation Mode page appears. Use this page to select between cluster and non-cluster installation:

  • Cluster installation: Select the nodes for your installation from the list of nodes on which clusterware has been installed.

  • Non-cluster installation: Install on a single-node only, even though that node is part of a cluster.

• If the Oracle home name entered is a pre-existing home, the Selected Nodes page appears. This is an information-only page that displays the nodes associated with the Oracle home. The installation is performed on all selected nodes. If any of the selected nodes are down, the installation is not allowed to proceed.

  Note:

  In Oracle Universal Installer, click Installed Products to display the Inventory panel, which lists all installed Oracle homes. Clustered Oracle homes, which are homes installed on multiple cluster nodes, have an attribute called Cluster Nodes, which lists all the nodes associated with that home.

Availability Checking

When the user clicks Next on the Specify Hardware Installation Mode page or Selected Nodes page, Oracle Universal Installer performs the following availability checks on the nodes:

• Network reachability: Tests whether the remote cluster nodes are up and running.

• Network configuration: Tests whether the remote cluster nodes are properly network-configured.

• Inventory setup: Tests whether the inventory is set up on the remote nodes. If not set up on UNIX, Oracle Universal Installer prompts you to run root scripts on the remote nodes to set up the inventory. On Windows, Oracle Universal Installer sets up the inventory location in the Windows registry.

• Inventory permission: Tests whether you can write to the Central Inventory location.

• Oracle home permission: Tests whether you can write to the Oracle home.

If all selected nodes are available, the installation process continues to the next step. If a node (or nodes) is not available, the page redisplays with a Status column indicating the results of the check. You must fix the problem or choose another set of nodes in order to proceed.

If any of the remote nodes is unreachable, check if those nodes are up and running and if they are properly network-configured. If either the inventory or the Oracle home is not writable, check for the appropriate permissions on the remote nodes for these directories.

Cluster Installation

In a typical cluster installation, when clusterware is present, Universal Installer installs the Oracle software onto the node on which Oracle Universal Installer is running, then propagates the Oracle home from the local node installation to the other nodes that are part of the installation. Then Universal Installer runs -attachHome on the remote nodes to update the inventory. After this, you need to run orainstRoot.sh (if required) and root.sh on the local and remote nodes. After the scripts are run, the configuration steps are executed.

If the cluster is Cluster File System (CFS) or Network File System (NFS) mounted, Oracle Universal Installer does not propagate the Oracle home to other nodes, as files are shared across nodes and the installation will exist on the shared disk.

Cluster Installation in Silent Mode

For Real Application Clusters installation, you can specify the -local flag, CLUSTER_NODES, REMOTE_NODES, and LOCAL_NODE session variables to indicate the nodes on which the installation needs to be done.

When you use the -local flag in a cluster installation, it means that the installation or inventory operation needs to be performed only on the local node. The CLUSTER_NODES session variable indicates that the specified nodes are part of the cluster.

./runInstaller -local "CLUSTER_NODES={a,b,c,d}"

In the above example, the installation would be performed in the local node, and nodes a, b, c, and d would be taken as the part of the cluster.

When you use the REMOTE_NODES session variable in a cluster installation, it means that the installation or the inventory operation needs to be performed on the local node and the other nodes apart from the local node.

./runInstaller "REMOTE_NODES={c,d}" "CLUSTER_NODES={a,b,c,d}"

In the above example, the installation would be performed on the local node a and nodes c and d. The nodes a, b, c, and d would be taken as the part of the cluster.

Cluster Deinstallation

When removing a clustered Oracle home, Oracle Universal Installer first removes software from the node from which you are deinstalling, then removes software from the other cluster nodes associated with the Oracle home.

Verification

After your Oracle product with Real Application Clusters installation is complete, go to $ORACLE_HOME/Opatch on each node and execute the following command:

$ORACLE_HOME/OPatch/opatch lsinventory -detail

This command lists the components installed inside the Oracle home and also lists the local and remote nodes for the home. Verify this information. You may also want to look at installation logs inventory.xml and oraclehomeproperties.xml.

See "Troubleshooting Real Application Clusters / Oracle Clusterware Installation" in case the check fails.

Back Up Disk after Installation

After your Oracle product with Real Application Clusters installation is complete and after you are sure that your system is functioning properly, make a back-up of the contents of the disk.

Also make a back-up of the disk contents after you complete any node additions or node deletions and after running any de-installation procedures.

Download and Install Patches

Go to the OracleMetaLink Web site for required patches for your installation. To download the required patches:

1. Use a Web browser to view the OracleMetaLink Web site:

   http://metalink.oracle.com
   

2. Log in to OracleMetaLink.

3. On the main OracleMetaLink page, click Patches.

4. On the Select a Patch Search Area page, click New MetaLink Patch Search.

5. On the Simple Search page, click Advanced.

6. On the Advanced Search page, click the search icon next to the Product or Product Family field.

7. In the Search and Select: Product Family field, enter the Oracle product name in the For field and click Go.

8. Select the Oracle product under the Results heading and click Select. The product name appears in the Product or Product Family field, and the current release appears in the Release field.

9. Select your platform from the list in the Platform field and click Go.

10. Any available patches appear under the Results heading.

11. Click the number of the patch that you want to download.

12. On the Patch Set page, click View README and read the page that appears. The README page contains information about the patch set and how to apply the patches to your installation.

13. Return to the Patch Set page, click Download, and save the file on your system.

14. Use the unzip utility provided with Oracle software to uncompress the Oracle patches that you downloaded from OracleMetaLink. The unzip utility is located in the $ORACLE_HOME/bin directory.

    Note:

    By default, the patches would only be applied on the nodes on which the Oracle software installation was done. You can change the node list by using the -enableRollingUpgrade option.

Configure Oracle Products

Many Oracle products and options must be configured before you use them for the first time. Before using individual Oracle products or options, refer to the manual in the product documentation library that is available on the documentation CD-ROM or on the Oracle Technology Network Web site.

Deinstalling Oracle Product Software on UNIX

The following steps describe how to use Oracle Universal Installer to remove Oracle software from an Oracle home on UNIX systems:

1. If necessary, log in as the oracle user:

   $ su - oracle
   

2. Set the ORACLE_HOME environment variable to specify the path of the Oracle home directory that you want to remove:

   • Bourne, Bash, or Korn shell:

     $ ORACLE_HOME=/u01/app/oracle/product/11.2.0/db_1
     $ export ORACLE_HOME
     

   • C shell:

     $ setenv ORACLE_HOME /u01/app/oracle/product/11.2.0/db_1
     

3. Stop all processes running in this Oracle home.

4. Start Oracle Universal Installer using the Deinstall tool. For information on this tool, see "Removing Oracle Database Client Software" in the Oracle Database Client Installation Guide 11g Release 2 (11.2) for Linux.

Deinstalling Oracle Product Software on Windows

The following steps describe how to use Oracle Universal Installer to remove Oracle software from an Oracle home on Windows systems:

1. Stop all the Oracle services running in this Oracle home.

2. Start Oracle Universal Installer: from the Start menu, select Programs, then ORACLE_ HOME_NAME, then Oracle Installation Products, then Oracle Universal Installer.

   The Welcome screen for Oracle Universal Installer appears.

3. Click Deinstall Products.

   The Inventory screen appears.

4. Expand the tree of installed components until you find the components to remove. For example, if you installed a database with the Enterprise Edition option and later installed additional components with the Custom option, expand the Oracle home component to display all the components installed in the Oracle home.

5. Select the components to remove.

6. Click Remove.

   The Confirmation screen appears.

7. Click Yes to remove the selected components to initiate the removal process.

8. After the components are removed from your computer, the Inventory screen appears without the removed components.

9. Click Close to close the Inventory screen.

10. Click Cancel to exit Oracle Universal Installer.

11. Click Yes to confirm that you want to exit.

    For detailed instructions on deinstalling an Oracle product, see the respective Oracle product installation guide.

Deinstalling Oracle Clusterware

Before deinstalling Oracle Cluster software, ensure that you have removed the respective Oracle product's home in each node by following the steps in the preceding section. The following section explains deinstallation on Windows and UNIX.