7 Removing Oracle RAC Software

The deinstall.bat command removes Oracle Clusterware and Oracle Automatic Storage Management (Oracle ASM) from your server, and Oracle Database installations, for both Oracle RAC and single-instance databases.

• Overview of Deinstallation Procedures
  There are several tasks to perform when completely removing all Oracle databases, instances, and software from an Oracle home directory.
• About Oracle Deinstallation Options
  The deinstall.bat command stops Oracle software, and removes Oracle software and configuration files on the operating system.
• Files Deleted by the deinstall Command
  The deinstall command removes Oracle software and files from your system.
• Identifying All Instances On a Cluster
  You can identify the database instances on your cluster using either SRVCTL or the Windows Services control interface.
• deinstall Command Reference
  You can run the deinstall command to remove Oracle software. You can run this command from an Oracle home directory after installation.
• Using the Deinstallation Tool to Remove Oracle RAC
  You can run the deinstallation tool in multiple ways.
• Cleaning Up After a Failed Installation
  If an installation fails, then you must remove the Oracle home directory and remove all files that Oracle Universal Installer (OUI) created during the attempted installation.

7.1 Files Deleted by the deinstall Command

The deinstall command removes Oracle software and files from your system.

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

• admin

• cfgtoollogs

• checkpoints

• diag

• oradata

• fast_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 deinstall deletes this data.

Caution:

The deinstall command deletes Oracle Database configuration files, user data, and fast recovery area (FRA) files even if they are located outside of the Oracle base directory path.