Please follow the READ ME file provided with the patch but in short here are the instructions.

  1. Verify the OUI Inventory
[oracle@machine-1 ~]$ /u01/app/oracle/product/fmw/oracle_common/OPatch/opatch lsinventory -jre /u01/app/java/jre/
Oracle Interim Patch Installer version 11.1.0.9.9
Copyright (c) 2012, Oracle Corporation.  All rights reserved.


Oracle Home       : /u01/app/oracle/product/fmw/Oracle_BI1
Central Inventory : /u01/app/oracle/oraInventory
   from           : /u01/app/oracle/product/fmw/Oracle_BI1/oraInst.loc
OPatch version    : 11.1.0.9.9
OUI version       : 11.1.0.9.0

2. Create PATCHES directory somewhere on the machine and copy the patch zip file provided there.

[oracle@machine-1 tmp]$ mkdir PATCHES
[oracle@machine-1 tmp]$ cd PATCHES/
[oracle@machine-1 PATCHES]$ unzip p18601947_11117140715_Linux-x86-64.zip
Archive:  p18601947_11117140715_Linux-x86-64.zip
   creating: 18601947/
   creating: 18601947/files/
   creating: 18601947/files/bifoundation/
   creating: 18601947/files/bifoundation/web/
   creating: 18601947/files/bifoundation/web/bin/
  inflating: 18601947/files/bifoundation/web/bin/libsawsubsystems643r.so
  inflating: 18601947/files/bifoundation/web/bin/libsawmarkup643r.so
   creating: 18601947/etc/
   creating: 18601947/etc/config/
  inflating: 18601947/etc/config/actions.xml
  inflating: 18601947/etc/config/deploy.xml
  inflating: 18601947/etc/config/inventory.xml
   creating: 18601947/etc/xml/
  inflating: 18601947/etc/xml/GenericActions.xml
  inflating: 18601947/etc/xml/ShiphomeDirectoryStructure.xml
  inflating: 18601947/README.txt
[oracle@machine-1 PATCHES]$ cd 18601947/
[oracle@machine-1 18601947]$ ls
etc  files  README.txt
[oracle@machine-1 18601947]$

3. Stop all Servers including Admin & Managed Servers as well as all OPMN processes.

/u01/app/oracle/product/fmw/instances/instance1/bin/opmnctl stopall
/u01/app/oracle/product/fmw/instances/instance1/bin/opmnctl status -l

4. Apply the patch & Restart Servers after that.

set ORACLE_HOME=/u01/app/oracle/product/fmw/Oracle_BI1 (Note - > This is BI Specific)

export PATH=$PATH:$ORACLE_HOME

[oracle@machine-1 ~]$ cd /u01/tmp/PATCHES/18601947/
[oracle@machine-1 18601947]$ /u01/app/oracle/product/fmw/oracle_common/OPatch/opatch apply -jre /u01/app/java/jre/
Oracle Interim Patch Installer version 11.1.0.9.9
Copyright (c) 2012, Oracle Corporation.  All rights reserved.


Oracle Home       : /u01/app/oracle/product/fmw/Oracle_BI1
Central Inventory : /u01/app/oracle/oraInventory
   from           : /u01/app/oracle/product/fmw/Oracle_BI1/oraInst.loc
OPatch version    : 11.1.0.9.9
OUI version       : 11.1.0.9.0
Log file location : /u01/app/oracle/product/fmw/Oracle_BI1/cfgtoollogs/opatch/18601947_Dec_05_2016_11_48_57/apply2016-12-05_11-48-56AM_1.log


OPatch detects the Middleware Home as "/u01/app/oracle/product/fmw"

Applying interim patch '18601947' to OH '/u01/app/oracle/product/fmw/Oracle_BI1'
Verifying environment and performing prerequisite checks...
All checks passed.

Please shutdown Oracle instances running out of this ORACLE_HOME on the local system.
(Oracle Home = '/u01/app/oracle/product/fmw/Oracle_BI1')


Is the local system ready for patching? [y|n]
y
User Responded with: Y
Backing up files...

Patching component oracle.bi.bifndn, 11.1.1.7.0...

Verifying the update...
Patch 18601947 successfully applied
Log file location: /u01/app/oracle/product/fmw/Oracle_BI1/cfgtoollogs/opatch/18601947_Dec_05_2016_11_48_57/apply2016-12-05_11-48-56AM_1.log

OPatch succeeded.

Restart servers and OPMN Processes if any.

4. Deinstallation Instructions

1. Make sure to follow the same Prerequisites or pre-install steps (if any) when   deinstalling a patch. This includes setting up any environment variables like ORACLE_HOME and verifying the OUI inventory  before deinstalling.

2. Change to the directory where the patch was unzipped.
   cd PATCHES/18601947

3. Run OPatch to deinstall the patch.

   Run following command:
   - opatch rollback -id 18601947  -jre /u01/app/java/jre/

Restart servers and OPMN Processes if any.