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Oracle® Database Client Installation Guide
11g Release 2 (11.2) for HP-UX

Part Number E24339-02
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5 Removing Oracle Database Client Software

This chapter describes how to completely remove Oracle software and configuration files related to the specified Oracle home using the Deinstallation Tool.

The deinstall command removes the Oracle Database Client installations.

Starting with Oracle Database 11g Release 2 (11.2), Oracle recommends that you use the deinstallation tool to remove the entire Oracle home associated with the Oracle Database, Oracle Clusterware, Oracle ASM, Oracle RAC, or Oracle Database client installation. Oracle does not support the removal of individual products or components.

It includes information about the following topics:

5.1 About the Deinstallation Tool

The Deinstallation Tool (deinstall) is available in the installation media before installation, and is available in Oracle home directories after installation. It is located in the $ORACLE_HOME/deinstall directory.

The deinstall command uses the information you provide, plus information gathered from the software home to create a parameter file. You can alternatively supply a parameter file generated previously by the deinstall command using the –checkonly option, or by editing the response file template.

Caution:

When you run the deinstall command, if the central inventory (oraInventory) contains no other registered homes besides the home that you are deconfiguring and removing, then the deinstall command removes the following files and directory contents in the Oracle base directory of the Oracle Database installation owner:
  • admin

  • cfgtoollogs

  • checkpoints

  • diag

  • oradata

  • flash_recovery_area

Oracle strongly recommends that you configure your installations using an Optimal Flexible Architecture (OFA) configuration, and that you reserve Oracle base and Oracle home paths for exclusive use of Oracle software. If you have any user data in these locations in the Oracle base that is owned by the user account that owns the Oracle software, then the deinstall command deletes this data.

The command uses the following syntax, where variable content is indicated in italics:

deinstall -home complete path of Oracle home [-silent] [-checkonly] [-local]
[-cleanupObase] [-paramfile complete path of input parameter property file] [-params name1=value
name2=value . . .] [-o complete path of directory for saving files] [-help]
 

The default method for running the deinstall tool is from the deinstall directory in the Oracle home as the installation owner:

$ $ORACLE_HOME/deinstall/deinstall

Provide information about your servers as prompted or accept the defaults.

The deinstall command stops Oracle software, and removes Oracle software and configuration files on the operating system.

In addition, you can run the deinstall tool from other locations, or with a parameter file, or select other options to run the tool.

The options are:

5.2 Downloading the Deinstall Tool for Use with Failed Installations

If you require the Deinstallation Tool (deinstall) to remove failed or incomplete installations, then it is available as a separate download from the Oracle Technology Network (OTN) Web site.

To download the Deinstallation Tool:

  1. Go to the following URL:

    http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html

  2. Under Oracle Database 11g Release 2, click See All for the respective platform for which you want to download the Deinstallation Tool.

    The Deinstallation Tool is available for download at the end of this Web page.

5.3 Example of Running the Deinstall Command

As the deinstall command runs, you are prompted to provide the home directory of the Oracle software to remove from your system. Provide additional information as prompted.

Use the optional flag -paramfile to provide a path to a parameter file.

In the following example, the deinstall command is in the path /u01/app/oracle/product/11.2.0/client_1/deinstall, and it uses a parameter file in the software owner location /home/usr/oracle:

# cd /u01/app/oracle/product/11.2.0/client_1/deinstall/
# ./deinstall -paramfile /home/usr/oracle/myparamfile.tmpl

If you enter the deinstall command outside of the $ORACLE_HOME/deinstall folder, then help is displayed, unless you enter a -home flag and provide a path. If you run the deinstall command from the $ORACLE_HOME/deinstall folder, then deinstallation starts without prompting you for a home address.

5.4 Deinstallation Parameter File Example

You can run the deinstall command with the -paramfile option to use the values you specify in the parameter file. The following is an example of a parameter file, in which the Oracle Database binary owner is oracle, the Oracle Database home (Oracle home) is in the path /u01/app/oracle/product/11.2.0/client_1/, the Oracle base (where other Oracle software is installed) is /u01/app/oracle/, the central Oracle Inventory home (oraInventory) is /u01/app/oraInventory, and the client is client1:

ORACLE_BASE=/u01/app/oracle
INVENTORY_LOCATION=/u01/app/oraInventory
CRS_HOME=false
HOME_TYPE=CLIENT
silent=false
local=false
LOCAL_NODE=node1
ObaseCleanupPtrLoc=/var/tmp/install/orabase_cleanup.lst.
LOGDIR=/u01/app/oraInventory/logs/
ORACLE_HOME=/u01/app/oracle/product/11.2.0/client_1