Rollback PSU in 2 node RAC 12.1.0.2.0

Dear Experts,

Need your help.

We are using 2 node RAC with version 12.1.0.2.0

[griduat@erpuatdb1 opatch]$ srvctl config database -d UATDB

Database unique name: UATDB

Database name:

Oracle home: /u02/UATDB/12.1.0

Oracle user: orauat

Spfile: +DATADG/UATDB/PARAMETERFILE/spfile.350.1057650621

Password file:

Domain:

Start options: open

Stop options: immediate

Database role: PRIMARY

Management policy: AUTOMATIC

Server pools:

Disk Groups: DATADG,FRADG

Mount point paths:

Services:

Type: RAC

Start concurrency:

Stop concurrency:

OSDBA group: asmdba

OSOPER group: asmoper

Database instances: UATDB1,UATDB2

Configured nodes: erpuatdb1,erpuatdb2

Database is administrator managed

[griduat@erpuatdb1 opatch]$

We have role seperation configured,orauat for RDBMS and oragrid for cluster.