Uninstalling The Oracle Local Database

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This document uses the terms "deinstall " and "uninstall" interchangeably. The terms are synonymous and describe the removal of a product from your workstation.

With one small exception, the steps are identical to uninstall either the Oracle 12c or Oracle 11gR2 local database from the Development Client. The exception is noted in the steps below.

When the Oracle Enterprise Edition (OEE) database was installed, it was installed into a subdirectory called E1Local under a base directory. By default, this base directory is C:\Oracle. This means that the database was installed into C:\Oracle\E1Local by default. This path is used in the uninstall steps listed below.

Follow these steps to uninstall the OEE local database.

1. Stop the database services from Control Panel:

   • OracleE1LocalTNSListener

   • OracleServiceE1LOCAL

2. Be sure no Oracle processes from the C:\Oracle\E1Local directory are running.

3. Open a command prompt window with Run as administrator.

4. Run this program:

   C:\Oracle\E1Local\deinstall\deinstall.bat

   Note:

   It is important that you do not "cd" to any directory below C:\Oracle to run this command. If you do make one of these directories the current directory, the OUI deinstaller will not be able to delete that directory.

5. During installation, the OEE12Setup.exe program should have created several files in the C:\Oracle\E1Local\deinstall directory. If the files were successfully created, the deinstall.bat program will not prompt for any input from the user. If for some reason the files were not created, the deinstall.bat program prompts the user for information needed to uninstall the database. You can take the default values (shown in square brackets) for most of the prompts. These are the prompts:

   1. Specify all Single Instance listeners that are to be de-configured [LISTENER]:

   2. Specify the list of database names that are configured in this Oracle home [E1LOCAL]:

   3. Specify the type of this database (1.Single Instance Database|2.Oracle Restart Enabled Database) [1]:

   4. Specify the diagnostic destination location of the database [C:\Oracle\diag\rdbms\e1local]:

   5. Specify the storage type used by the Database ASM|FS []:

      This prompt requires a response. Enter FS.

   6. Specify the list of directories if any database files exist on a shared file system. If 'E1LOCAL' subdirectory is found, then it will be deleted. Otherwise, the specified directory will be deleted. Alternatively, you can specify list of database files with full path [ ]:

   7. Specify the flash recovery area location, if it is configured on the file system. If "E1LOCAL" subdirectory is found, then it will be deleted. []:

   8. Specify the database spfile location [ ]:

   9. Do you want to continue (y - yes, n - no)? [n]:

      This requires a response. Enter "y".

      Important: If you go through the above prompts, you also need to delete the registry key \HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\ORACLE\KEY_E1Local.

6. When the uninstall finishes, be sure that the following directories do not exist. If they do, you will need to manually delete them.

   Oracle 12c and 11gR2

   C:\Oracle\E1Local

   Oracle 12c only

   C:\Oracle\oradata

   Caution:

   It is very important that no files exist in the above directory or directories (as applicable) when you next attempt to install the OEE database. If any files do exist, the OEE installation will probably fail.

   If the database does not uninstall cleanly for some reason, you will need to manually remove it. Follow the instructions in the Appendix of this guide entitled: Manual Cleanup of an Uninstalled Oracle Database.