Downgrade Grid Infrastructure from 12.2.0.1 to 11.2.0.4.

Take the output of below commands before starting downgrade.

[root@lab-tst-rac1 ~]# /u01/app/12.2.0.1/grid/bin/ocrcheck
Status of Oracle Cluster Registry is as follows :
         Version                  :          4
         Total space (kbytes)     :     409568
         Used space (kbytes)      :      11472
         Available space (kbytes) :     398096
         ID                       :  598504973
         Device/File Name         :      +DATA
                                    Device/File integrity check succeeded

                                    Device/File not configured

                                    Device/File not configured

                                    Device/File not configured

                                    Device/File not configured

         Cluster registry integrity check succeeded

         Logical corruption check succeeded

[root@lab-tst-rac1 ~]# /u01/app/12.2.0.1/grid/bin/crsctl status res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       lab-tst-rac1             STABLE
               ONLINE  ONLINE       lab-tst-rac2             STABLE
ora.DATA.dg
               ONLINE  ONLINE       lab-tst-rac1             STABLE
               ONLINE  ONLINE       lab-tst-rac2             STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       lab-tst-rac1             STABLE
               ONLINE  ONLINE       lab-tst-rac2             STABLE
ora.RECO.dg
               ONLINE  ONLINE       lab-tst-rac1             STABLE
               ONLINE  ONLINE       lab-tst-rac2             STABLE
ora.net1.network
               ONLINE  ONLINE       lab-tst-rac1             STABLE
               ONLINE  ONLINE       lab-tst-rac2             STABLE
ora.ons
               ONLINE  ONLINE       lab-tst-rac1             STABLE
               ONLINE  ONLINE       lab-tst-rac2             STABLE
ora.proxy_advm
               OFFLINE OFFLINE      lab-tst-rac1             STABLE
               OFFLINE OFFLINE      lab-tst-rac2             STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       lab-tst-rac2             STABLE
ora.LISTENER_SCAN2.lsnr
      1        ONLINE  ONLINE       lab-tst-rac1             STABLE
ora.LISTENER_SCAN3.lsnr
      1        ONLINE  ONLINE       lab-tst-rac1             STABLE
ora.MGMTLSNR
      1        OFFLINE OFFLINE                               STABLE
ora.asm
      1        ONLINE  ONLINE       lab-tst-rac1             Started,STABLE
      2        ONLINE  ONLINE       lab-tst-rac2             Started,STABLE
ora.cvu
      1        ONLINE  ONLINE       lab-tst-rac1             STABLE
ora.lab-tst-rac1.vip
      1        ONLINE  ONLINE       lab-tst-rac1             STABLE
ora.lab-tst-rac2.vip
      1        ONLINE  ONLINE       lab-tst-rac2             STABLE
ora.prod.db
      1        ONLINE  ONLINE       lab-tst-rac1             Open,HOME=/u01/app/o
                                                             racle/product/11.2.0
                                                             .4/db_1,STABLE
      2        ONLINE  ONLINE       lab-tst-rac2             Open,HOME=/u01/app/o
                                                             racle/product/11.2.0
                                                             .4/db_1,STABLE
ora.qosmserver
      1        ONLINE  ONLINE       lab-tst-rac1             STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       lab-tst-rac2             STABLE
ora.scan2.vip
      1        ONLINE  ONLINE       lab-tst-rac1             STABLE
ora.scan3.vip
      1        ONLINE  ONLINE       lab-tst-rac1             STABLE
--------------------------------------------------------------------------------
[root@lab-tst-rac1 ~]#



1. Delete the Oracle Grid Infrastructure 12c Release 2 (12.2) Management Database:

##### This Step Not Recuired if not configured -MGMTDB database ######

/u01/app/12.2.0.1/grid/bin/dbca -silent -deleteDatabase -sourceDB -MGMTDB

2. Downgrade the Cluster Interface from 12.2.0.1 to 11.2.0.4 as a root user on node 2 first then node 1 last.

/u01/app/12.2.0.1/grid/crs/install/rootcrs.sh -downgrade

Node 2:
=======

[root@lab-tst-rac2 ~]# /u01/app/12.2.0.1/grid/crs/install/rootcrs.sh -downgrade
Using configuration parameter file: /u01/app/12.2.0.1/grid/crs/install/crsconfig_params
The log of current session can be found at:
  /u01/app/grid/crsdata/lab-tst-rac2/crsconfig/crsdowngrade_lab-tst-rac2_2018-01-10_04-51-30PM.log
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'lab-tst-rac2'
CRS-2673: Attempting to stop 'ora.crsd' on 'lab-tst-rac2'
CRS-2790: Starting shutdown of Cluster Ready Services-managed resources on server 'lab-tst-rac2'
CRS-2673: Attempting to stop 'ora.prod.db' on 'lab-tst-rac2'
CRS-2677: Stop of 'ora.prod.db' on 'lab-tst-rac2' succeeded
CRS-2673: Attempting to stop 'ora.DATA.dg' on 'lab-tst-rac2'
CRS-2673: Attempting to stop 'ora.RECO.dg' on 'lab-tst-rac2'
CRS-2673: Attempting to stop 'ora.LISTENER.lsnr' on 'lab-tst-rac2'
CRS-2673: Attempting to stop 'ora.LISTENER_SCAN1.lsnr' on 'lab-tst-rac2'
CRS-2677: Stop of 'ora.RECO.dg' on 'lab-tst-rac2' succeeded
CRS-2677: Stop of 'ora.DATA.dg' on 'lab-tst-rac2' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'lab-tst-rac2'
CRS-2677: Stop of 'ora.asm' on 'lab-tst-rac2' succeeded
CRS-2673: Attempting to stop 'ora.ASMNET1LSNR_ASM.lsnr' on 'lab-tst-rac2'
CRS-2677: Stop of 'ora.LISTENER_SCAN1.lsnr' on 'lab-tst-rac2' succeeded
CRS-2677: Stop of 'ora.LISTENER.lsnr' on 'lab-tst-rac2' succeeded
CRS-2673: Attempting to stop 'ora.lab-tst-rac2.vip' on 'lab-tst-rac2'
CRS-2673: Attempting to stop 'ora.scan1.vip' on 'lab-tst-rac2'
CRS-2677: Stop of 'ora.lab-tst-rac2.vip' on 'lab-tst-rac2' succeeded
CRS-2677: Stop of 'ora.scan1.vip' on 'lab-tst-rac2' succeeded
CRS-2677: Stop of 'ora.ASMNET1LSNR_ASM.lsnr' on 'lab-tst-rac2' succeeded
CRS-2672: Attempting to start 'ora.scan1.vip' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.lab-tst-rac2.vip' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.scan1.vip' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.LISTENER_SCAN1.lsnr' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.lab-tst-rac2.vip' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.LISTENER_SCAN1.lsnr' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.ons' on 'lab-tst-rac2'
CRS-2677: Stop of 'ora.ons' on 'lab-tst-rac2' succeeded
CRS-2673: Attempting to stop 'ora.net1.network' on 'lab-tst-rac2'
CRS-2677: Stop of 'ora.net1.network' on 'lab-tst-rac2' succeeded
CRS-2792: Shutdown of Cluster Ready Services-managed resources on 'lab-tst-rac2' has completed
CRS-2677: Stop of 'ora.crsd' on 'lab-tst-rac2' succeeded
CRS-2673: Attempting to stop 'ora.storage' on 'lab-tst-rac2'
CRS-2673: Attempting to stop 'ora.crf' on 'lab-tst-rac2'
CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'lab-tst-rac2'
CRS-2673: Attempting to stop 'ora.gpnpd' on 'lab-tst-rac2'
CRS-2673: Attempting to stop 'ora.mdnsd' on 'lab-tst-rac2'
CRS-2677: Stop of 'ora.drivers.acfs' on 'lab-tst-rac2' succeeded
CRS-2677: Stop of 'ora.storage' on 'lab-tst-rac2' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'lab-tst-rac2'
CRS-2677: Stop of 'ora.crf' on 'lab-tst-rac2' succeeded
CRS-2677: Stop of 'ora.gpnpd' on 'lab-tst-rac2' succeeded
CRS-2677: Stop of 'ora.mdnsd' on 'lab-tst-rac2' succeeded
CRS-2677: Stop of 'ora.asm' on 'lab-tst-rac2' succeeded
CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'lab-tst-rac2'
CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'lab-tst-rac2' succeeded
CRS-2673: Attempting to stop 'ora.ctssd' on 'lab-tst-rac2'
CRS-2673: Attempting to stop 'ora.evmd' on 'lab-tst-rac2'
CRS-2677: Stop of 'ora.ctssd' on 'lab-tst-rac2' succeeded
CRS-2677: Stop of 'ora.evmd' on 'lab-tst-rac2' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on 'lab-tst-rac2'
CRS-2677: Stop of 'ora.cssd' on 'lab-tst-rac2' succeeded
CRS-2673: Attempting to stop 'ora.gipcd' on 'lab-tst-rac2'
CRS-2677: Stop of 'ora.gipcd' on 'lab-tst-rac2' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'lab-tst-rac2' has completed
CRS-4133: Oracle High Availability Services has been stopped.
2018/01/10 16:54:18 CLSRSC-4006: Removing Oracle Trace File Analyzer (TFA) Collector.
2018/01/10 16:54:44 CLSRSC-4007: Successfully removed Oracle Trace File Analyzer (TFA) Collector.
2018/01/10 16:54:44 CLSRSC-4001: Installing Oracle Trace File Analyzer (TFA) Collector.
2018/01/10 16:55:39 CLSRSC-4002: Successfully installed Oracle Trace File Analyzer (TFA) Collector.
2018/01/10 16:55:39 CLSRSC-591: successfully downgraded Oracle Clusterware stack on this node
[root@lab-tst-rac2 ~]#

Node 1:
=======

[root@lab-tst-rac1 ~]# /u01/app/12.2.0.1/grid/crs/install/rootcrs.sh -downgrade
Using configuration parameter file: /u01/app/12.2.0.1/grid/crs/install/crsconfig_params
The log of current session can be found at:
  /u01/app/grid/crsdata/lab-tst-rac1/crsconfig/crsdowngrade_lab-tst-rac1_2018-01-10_04-59-33PM.log
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.crsd' on 'lab-tst-rac1'
CRS-2790: Starting shutdown of Cluster Ready Services-managed resources on server 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.qosmserver' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.prod.db' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.prod.db' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.DATA.dg' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.RECO.dg' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.LISTENER.lsnr' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.LISTENER_SCAN1.lsnr' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.LISTENER_SCAN2.lsnr' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.LISTENER_SCAN3.lsnr' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.cvu' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.lab-tst-rac1.vip' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.DATA.dg' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.LISTENER.lsnr' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.LISTENER_SCAN1.lsnr' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.LISTENER_SCAN2.lsnr' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.LISTENER_SCAN3.lsnr' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.RECO.dg' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.scan1.vip' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.scan2.vip' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.scan3.vip' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.lab-tst-rac1.vip' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.lab-tst-rac2.vip' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.asm' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.ASMNET1LSNR_ASM.lsnr' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.scan3.vip' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.scan1.vip' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.ASMNET1LSNR_ASM.lsnr' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.scan2.vip' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.cvu' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.lab-tst-rac2.vip' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.qosmserver' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.ons' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.ons' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.net1.network' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.net1.network' on 'lab-tst-rac1' succeeded
CRS-2792: Shutdown of Cluster Ready Services-managed resources on 'lab-tst-rac1' has completed
CRS-2677: Stop of 'ora.crsd' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.storage' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.crf' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.gpnpd' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.mdnsd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.drivers.acfs' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.storage' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.crf' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.gpnpd' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.mdnsd' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.asm' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.ctssd' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.evmd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.ctssd' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.evmd' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.cssd' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.gipcd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.gipcd' on 'lab-tst-rac1' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'lab-tst-rac1' has completed
CRS-4133: Oracle High Availability Services has been stopped.

ASM downgrade operation succeeded

CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.crsd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.crsd' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.storage' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.crf' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.gpnpd' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.mdnsd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.drivers.acfs' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.crf' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.gpnpd' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.storage' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.mdnsd' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.asm' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.ctssd' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.evmd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.ctssd' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.evmd' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.cssd' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.gipcd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.gipcd' on 'lab-tst-rac1' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'lab-tst-rac1' has completed
CRS-4133: Oracle High Availability Services has been stopped.
CRS-4123: Starting Oracle High Availability Services-managed resources
CRS-2672: Attempting to start 'ora.mdnsd' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.evmd' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.mdnsd' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.evmd' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.gpnpd' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.gpnpd' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.gipcd' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.gipcd' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.cssdmonitor' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.cssdmonitor' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.cssd' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.diskmon' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.diskmon' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.cssd' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.ctssd' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.ctssd' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.asm' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.asm' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.storage' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.storage' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.crf' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.crf' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.crsd' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.crsd' on 'lab-tst-rac1' succeeded
CRS-6023: Starting Oracle Cluster Ready Services-managed resources
CRS-2664: Resource 'ora.DATA.dg' is already running on 'lab-tst-rac1'
CRS-2664: Resource 'ora.RECO.dg' is already running on 'lab-tst-rac1'
CRS-6017: Processing resource auto-start for servers: lab-tst-rac1
CRS-2672: Attempting to start 'ora.scan1.vip' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.lab-tst-rac1.vip' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.scan2.vip' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.scan3.vip' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.cvu' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.qosmserver' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.ons' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.lab-tst-rac2.vip' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.cvu' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.lab-tst-rac1.vip' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.LISTENER.lsnr' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.scan1.vip' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.LISTENER_SCAN1.lsnr' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.scan2.vip' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.LISTENER_SCAN2.lsnr' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.scan3.vip' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.LISTENER_SCAN3.lsnr' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.lab-tst-rac2.vip' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.ons' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.LISTENER.lsnr' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.LISTENER_SCAN1.lsnr' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.prod.db' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.LISTENER_SCAN2.lsnr' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.LISTENER_SCAN3.lsnr' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.qosmserver' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.prod.db' on 'lab-tst-rac1' succeeded
CRS-6016: Resource auto-start has completed for server lab-tst-rac1
CRS-6024: Completed start of Oracle Cluster Ready Services-managed resources
CRS-4123: Oracle High Availability Services has been started.
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.crsd' on 'lab-tst-rac1'
CRS-2790: Starting shutdown of Cluster Ready Services-managed resources on server 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.qosmserver' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.prod.db' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.prod.db' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.DATA.dg' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.RECO.dg' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.LISTENER.lsnr' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.LISTENER_SCAN1.lsnr' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.LISTENER_SCAN2.lsnr' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.LISTENER_SCAN3.lsnr' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.cvu' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.lab-tst-rac1.vip' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.DATA.dg' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.RECO.dg' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.LISTENER.lsnr' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.LISTENER_SCAN1.lsnr' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.LISTENER_SCAN2.lsnr' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.LISTENER_SCAN3.lsnr' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.lab-tst-rac1.vip' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.scan1.vip' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.scan2.vip' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.scan3.vip' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.lab-tst-rac2.vip' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.asm' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.ASMNET1LSNR_ASM.lsnr' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.qosmserver' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.scan3.vip' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.cvu' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.scan1.vip' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.scan2.vip' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.lab-tst-rac2.vip' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.ASMNET1LSNR_ASM.lsnr' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.ons' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.ons' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.net1.network' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.net1.network' on 'lab-tst-rac1' succeeded
CRS-2792: Shutdown of Cluster Ready Services-managed resources on 'lab-tst-rac1' has completed
CRS-2677: Stop of 'ora.crsd' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.crf' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.gpnpd' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.mdnsd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.drivers.acfs' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.crf' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.gpnpd' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.mdnsd' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.asm' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.ctssd' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.evmd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.ctssd' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.evmd' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.cssd' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.gipcd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.gipcd' on 'lab-tst-rac1' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'lab-tst-rac1' has completed
CRS-4133: Oracle High Availability Services has been stopped.
CRS-4123: Oracle High Availability Services has been started.
CRS-2672: Attempting to start 'ora.evmd' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.mdnsd' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.evmd' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.mdnsd' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.gpnpd' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.gpnpd' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.cssdmonitor' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.gipcd' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.cssdmonitor' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.gipcd' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.cssd' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.diskmon' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.diskmon' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.cssd' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.crf' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.ctssd' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.crf' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.ctssd' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.asm' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.asm' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.storage' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.storage' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.crsd' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.crsd' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.crsd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.crsd' on 'lab-tst-rac1' succeeded
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.storage' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.mdnsd' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.gpnpd' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.storage' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.drivers.acfs' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.crf' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.ctssd' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.evmd' on 'lab-tst-rac1'
CRS-2673: Attempting to stop 'ora.asm' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.mdnsd' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.gpnpd' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.crf' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.ctssd' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.evmd' on 'lab-tst-rac1' succeeded
CRS-2677: Stop of 'ora.asm' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.cssd' on 'lab-tst-rac1' succeeded
CRS-2673: Attempting to stop 'ora.gipcd' on 'lab-tst-rac1'
CRS-2677: Stop of 'ora.gipcd' on 'lab-tst-rac1' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'lab-tst-rac1' has completed
CRS-4133: Oracle High Availability Services has been stopped.
CRS-4123: Oracle High Availability Services has been started.
CRS-2672: Attempting to start 'ora.mdnsd' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.mdnsd' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.gpnpd' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.gpnpd' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.cssdmonitor' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.gipcd' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.cssdmonitor' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.gipcd' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.cssd' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.diskmon' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.diskmon' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.cssd' on 'lab-tst-rac1' succeeded
CRS-2679: Attempting to clean 'ora.cluster_interconnect.haip' on 'lab-tst-rac1'
CRS-2672: Attempting to start 'ora.ctssd' on 'lab-tst-rac1'
CRS-2681: Clean of 'ora.cluster_interconnect.haip' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.ctssd' on 'lab-tst-rac1' succeeded
CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'lab-tst-rac1' succeeded
CRS-2672: Attempting to start 'ora.asm' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.asm' on 'lab-tst-rac1' succeeded
2018/01/10 17:07:29 CLSRSC-338: Successfully downgraded OCR to version 11.2.0.4.0
CRS-2672: Attempting to start 'ora.crsd' on 'lab-tst-rac1'
CRS-2676: Start of 'ora.crsd' on 'lab-tst-rac1' succeeded
2018/01/10 17:09:34 CLSRSC-4006: Removing Oracle Trace File Analyzer (TFA) Collector.
2018/01/10 17:09:59 CLSRSC-4007: Successfully removed Oracle Trace File Analyzer (TFA) Collector.
2018/01/10 17:09:59 CLSRSC-4001: Installing Oracle Trace File Analyzer (TFA) Collector.
2018/01/10 17:10:51 CLSRSC-4002: Successfully installed Oracle Trace File Analyzer (TFA) Collector.
2018/01/10 17:10:51 CLSRSC-591: successfully downgraded Oracle Clusterware stack on this node
2018/01/10 17:10:51 CLSRSC-640: To complete the downgrade operation, ensure that the node inventory on all nodes points to the configured Grid Infrastructure home '/u01/app /11.2.0.4/grid'.
2018/01/10 17:10:53 CLSRSC-592: Run 'crsctl start crs' from home /u01/app/11.2.0.4/grid on each node to complete downgrade.
[root@lab-tst-rac1 ~]#


3. Update the Node List (Remove 12.2.0.1 grid home ) as a grid user on node 1.

cd /u01/app/12.2.0.1/grid/oui/bin

./runInstaller -nowait -waitforcompletion -ignoreSysPrereqs -updateNodeList -silent CRS=false ORACLE_HOME=/u01/app/12.2.0.1/grid "CLUSTER_NODES=lab-tst-rac1,lab-tst-rac2" -doNotUpdateNodeList


[grid@lab-tst-rac1 ~]$ cd /u01/app/12.2.0.1/grid/oui/bin
[grid@lab-tst-rac1 bin]$ ./runInstaller -nowait -waitforcompletion -ignoreSysPrereqs -updateNodeList -silent CRS=false ORACLE_HOME=/u01/app/12.2.0.1/grid "CLUSTER_NODES=lab -tst-rac1,lab-tst-rac2" -doNotUpdateNodeList
Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 8191 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
'UpdateNodeList' was successful.
[grid@lab-tst-rac1 bin]$


4. Check the oraInventory on existing grid home availablity.

Node 1:
=======

[grid@lab-tst-rac1 ~]$ grep "HOME NAME"  /u01/app/oraInventory/ContentsXML/inventory.xml
<HOME NAME="Ora11g_gridinfrahome1" LOC="/u01/app/11.2.0.4/grid" TYPE="O" IDX="1">
<HOME NAME="OraDb11g_home1" LOC="/u01/app/oracle/product/11.2.0.4/db_1" TYPE="O" IDX="2">
<HOME NAME="OraGI12Home1" LOC="/u01/app/12.2.0.1/grid" TYPE="O" IDX="3"/>

Node 1:
=======

[grid@lab-tst-rac2 ~]$ grep "HOME NAME"  /u01/app/oraInventory/ContentsXML/inventory.xml
<HOME NAME="Ora11g_gridinfrahome1" LOC="/u01/app/11.2.0.4/grid" TYPE="O" IDX="1" CRS="true">
<HOME NAME="OraDb11g_home1" LOC="/u01/app/oracle/product/11.2.0.4/db_1" TYPE="O" IDX="2">
<HOME NAME="OraGI12Home1" LOC="/u01/app/12.2.0.1/grid" TYPE="O" IDX="3"/>
[grid@lab-tst-rac2 ~]$


5.Update the Node List (Add 11.2.0.4 grid home ) as a grid user on node 1.

cd /u01/app/11.2.0.4/grid/oui/bin

./runInstaller -nowait -waitforcompletion -ignoreSysPrereqs -updateNodeList -silent CRS=true ORACLE_HOME=/u01/app/11.2.0.4/grid

[grid@lab-tst-rac1 ~]$ cd /u01/app/11.2.0.4/grid/oui/bin
[grid@lab-tst-rac1 bin]$ ./runInstaller -nowait -waitforcompletion -ignoreSysPrereqs -updateNodeList -silent CRS=true ORACLE_HOME=/u01/app/11.2.0.4/grid
Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 8191 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /u01/app/oraInventory
'UpdateNodeList' was successful.
[grid@lab-tst-rac1 bin]$

6. Start the cluster service using 11g grid home.

Node 1:
=======

[root@lab-tst-rac1 ~]# /u01/app/11.2.0.4/grid/bin/crsctl start crs
CRS-4123: Oracle High Availability Services has been started.
[root@lab-tst-rac1 ~]#

Node 2:
=======

[root@lab-tst-rac2 ~]# /u01/app/11.2.0.4/grid/bin/crsctl start crs
CRS-4123: Oracle High Availability Services has been started.
[root@lab-tst-rac2 ~]#


7. Remove the 12c grid home use below command

$ORACLE_HOME/deinstall/deinstall


8. Check the oraInventory on existing grid home availablity.

[root@lab-tst-rac1 install]# grep "HOME NAME"  /u01/app/oraInventory/ContentsXML/inventory.xml
<HOME NAME="Ora11g_gridinfrahome1" LOC="/u01/app/11.2.0.4/grid" TYPE="O" IDX="1" CRS="true">
<HOME NAME="OraDb11g_home1" LOC="/u01/app/oracle/product/11.2.0.4/db_1" TYPE="O" IDX="2">
[root@lab-tst-rac1 install]#

[root@lab-tst-rac2 ~]# grep "HOME NAME"  /u01/app/oraInventory/ContentsXML/inventory.xml
<HOME NAME="Ora11g_gridinfrahome1" LOC="/u01/app/11.2.0.4/grid" TYPE="O" IDX="1" CRS="true">
<HOME NAME="OraDb11g_home1" LOC="/u01/app/oracle/product/11.2.0.4/db_1" TYPE="O" IDX="2">
[root@lab-tst-rac2 ~]#


Ref: https://ora9212.wordpress.com/2017/12/05/downgrade-12-2-0-1-to-11-2-0-4-grid-infrastructure/