ORA-20013: dbms_qopatch ran mostly in non install area

Datapatch fails with following errors :

./datapatch -verbose
SQL Patching tool version 12.1.0.2.0 on Fri Jul 17 09:45:14 2015
Copyright (c) 2015, Oracle. All rights reserved.

Log file for this invocation: /cfgtoollogs/sqlpatch/sqlpatch_22821_2015_07_17_09_45_14/sqlpatch_invocation.log

Connecting to database…OK
Bootstrapping registry and package to current versions…done

Queryable inventory could not determine the current opatch status.
Execute ‘select dbms_sqlpatch.verify_queryable_inventory from dual’
and/or check the invocation log
/cfgtoollogs/sqlpatch/sqlpatch_22821_2015_07_17_09_45_14/sqlpatch_invocation.log
for the complete error.
Prereq check failed, exiting without installing any patches.

Please refer to MOS Note 1609718.1 and/or the invocation log
/cfgtoollogs/sqlpatch/sqlpatch_22821_2015_07_17_09_45_14/sqlpatch_invocation.log
for information on how to resolve the above errors.

SQL Patching tool complete on Fri Jul 17 09:45:21 2015

OR

Connecting to database...OK
Determining current state...DBD::Oracle::st execute failed: ORA-20009: Job Load_opatch_inventory_1execution failed
ORA-06512: at "SYS.DBMS_QOPATCH", line 1011
ORA-06512: at line 4 (DBD ERROR: OCIStmtExecute) [for Statement "DECLARE
x XMLType;
BEGIN
x := dbms_qopatch.get_pending_activity;
? := x.getStringVal();

END;" with ParamValues: :p1=undef] at /RAC/oracle/12.1.0.1/dbhome_1/sqlpatch/sqlpatch.pm line 648.

Further accessing the inventory through the DBMS_QOPATCH also fails with the following error :

SQL> select dbms_sqlpatch.verify_queryable_inventory from dual;
ORA-20013: DBMS_QOPATCH ran mostly in non install area

SQL> select dbms_qopatch.get_opatch_install_info() from dual;
ERROR:
ORA-20013: DBMS_QOPATCH ran mostly in non install area
ORA-06512: at “SYS.DBMS_QOPATCH”, line 1937
ORA-06512: at “SYS.DBMS_QOPATCH”, line 133

Cause:
OPATCH_INST_DIR was pointing to $ORACLE_HOME/QOpatch
or
OPATCH_LOG_DIR was pointing to $ORACLE_HOME/QOPatch
or
OPATCH_SCRIPT_DIR was pointing to $ORACLE_HOME/OPatch
or
Any one or more of the above condition is true.



This can be checked using the following query :

SQL> select DIRECTORY_NAME, DIRECTORY_PATH from dba_directories ;

Instead ,
OPATCH_INST_DIR should point to $ORACLE_HOME/OPatch
OPATCH_LOG_DIR should point to $ORACLE_HOME/QOpatch
OPATCH_SCRIPT_DIR should point to $ORACLE_HOME/QOpatch

Solution:
Drop the directory and create correct location :

1) SQL> create or replace directory OPATCH_INST_DIR as '/OPatch';
2) SQL> create or replace directory OPATCH_LOG_DIR as '/QOpatch';
3) SQL> create or replace directory OPATCH_SCRIPT_DIR as '/QOpatch';
4) Invoke datapatch command:

   ./datapatch -prereq  
   ./datapatch -verbose