Did the path location for root_orachk.sh change in 12.1.0.2.7?
SYMPTOM:
cat orachk_skipped_checks.log
skipping CRS Opatch version(checkid:-03CA9E70B3253B3AE05313C0E50A38C4) because o_opatchversion_orahost01.out not found
skipping umask setting for GI owner(checkid:-0831B750458310CCE05312C0E50A1A5D) because o_gi_umask_orahost01.out not found
skipping Verify nofiles limit for Agent user(checkid:-0D126444B2DB4065E05312C0E50A2296) because o_agent_user_limits_orahost01.out not found
skipping Verify nproc limit for Agent user(checkid:-0D15216CD35D2589E05313C0E50A1633) because o_agent_user_limits_orahost01.out not found