Patch summary:
--------------
README file for OPatch(11.2.0.1.8), the Oracle Interim Patching Tool.

This patch installs the "OPatch" utility. OPatch is used for patching
Oracle software. If you have an older version of opatch it is strongly
recommended to back it up.

OPatch is Oracle's only supported method of installing Interim
patches. It updates the central and per-product inventories with the
details of the patch.

How to install the utility:
---------------------------
To install this patch simply extract the file "zipped file"
using unzip or winzip, depending upon the platform. You should extract
the zip file directly under the ORACLE_HOME.

To check the version of the opatch utility installed in the above step,
go to the OPatch directory and run "opatch version"

How to run the utility:
-----------------------
OPatch tool requires JDK to be present in the Oracle Home. 
It requires JDK version of 1.5.0 or higher for proper functioning.

It can be invoked directly using

    <path to OPatch>/opatch [<patch command>] [options]

You can use the following command format to view help information:

    <path to OPatch>/opatch [<patch command>] -help

OPatch can be manually invoked using Perl:

  <path to Perl>/perl <path to OPatch>/opatch.pl <patch command> [options]

You can use the following command format to view help information:

  <path to Perl>/perl <path to OPatch>/opatch.pl  [<patch command>] -help

There is a User's Guide in the 'docs' subdirectory that has full
details on running the tool. There is FAQ file in the same directory
that answers many of the common questions.

If you don't have Perl, you can download Perl from Metalink
(http://metalink.oracle.com) using Bug 2417872. Source code for perl
is also available from http://www.cpan.org (the Comprehensive Perl
Archive Network). Links to binary versions of perl for supported
operating systems is also provided on the CPAN web site.

You can download the required version of JDK from 
http://java.sun.com

Special Instructions:
---------------------
Windows:
--------
  1) If your "Central Inventory" is not under
       C:\Program Files\oracle\inventory, please set env. var. INVENTORY_LOC
            to the value of the registry key
                 \\HKEY_LOCAL_MACHINE\Software\Oracle\inst_loc

  2) Make sure you have java.exe in your PATH

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