a. The DATA disk group stores OCR and voting files, and the MGMT disk group stores GIMR and Oracle Clusterware backup files.
b. Starting with Oracle Grid Infrastructure 19c, configuring GIMR is optional for Oracle Standalone Cluster deployments.
Configuring Operating Systems for Oracle Grid Infrastructure on Linux
Installation Errors for Oracle 12.2 RAC on RHEL 7.6
PRVE-0421 : No entry exists in /etc/fstab for mounting /dev/shm
Cause
This is due to below bugs:
OL7 - BUG 21441387 - 12.2/MAIN/OL7.1: CVU REPORTS /DEV/SHM NOT MOUNTED WHEN IT IS MOUNTED
RHEL 7 - Bug 25907259 : RHEL7.2: CVU REPORTS /DEV/SHM NOT MOUNTED WHEN IT IS MOUNTED
Solution
This issue is fixed in 12.2.0.2, request for one-off patch if necessary.
As a work-around in OL7:
In OL7, the /dev/shm is not mounted in /etc/fstab on a fresh system, it is done in:
CLSRSC-400: A system reboot is required to continue installing
2026/09/03 18:19:29 CLSRSC-400: A system reboot is required to continue installing. The command'/u01/app/12.2.0/grid/perl/bin/perl -I/u01/app/12.2.0/grid/perl/lib -I/u01/app/12.2.0/grid/crs/install /u01/app/12.2.0/grid/crs/install/rootcrs.pl ' execution failed
Cause
ACFS Drivers Install reports CLSRSC-400: A system reboot is required to continue installing (Doc ID 2025056.1), 主要是由于 12c gi 开始，acfs 默认是安装的，由于 acfs 在 redhat 7.3 中不支持导致上述的错误信息.
Bug 26247490 - LINUX: Add ACFS support for OL7 update 4 using RHCK (文档 ID 26247490.8)
ACFS and AFD report "Not Supported" after installing appropriate Oracle Grid Infrastructure Patches on RedHat (文档 ID 2303388.1)
~]$ /u01/app/12.2.0/grid/gridSetup.sh -applyPSU /soft/32226491 Preparing the home to patch... Applying the patch /soft/32226491/... Successfully applied the patch. The log can be found at: /u01/app/oraInventory/logs/GridSetupActions2021-04-01_04-18-54PM/installerPatchActions_2021-04-01_04-18-54PM.log Launching Oracle Grid Infrastructure Setup Wizard...
~]$ /u01/app/12.2.0/grid/gridSetup.sh -applyPSU /soft/32226491 ERROR: The home is not clean. This home cannot be used since there was a failed OPatch execution in this home. Use a different home to proceed.
Cause
Last time, opatch failed to execute properly and exited with an error.
OUI-67100:NApply could not load patch from location
~]$ /u01/app/12.2.0/grid/gridSetup.sh -applyPSU /soft/32226491 ERROR: Unable to verify the graphical display setup. This application requires X display. Make sure that xdpyinfo exist under PATH variable. Preparing the home to patch... Applying the patch /soft/32226491... OPatch command failed while applying the patch. For details look at the logs from /u01/app/12.2.0/grid/cfgtoollogs/opatch/.
Cause
OUI-67100, OUI-67073 error:
[Sep 3, 2026 8:03:50 PM] [INFO] Patch history file: /u01/app/12.2.0/grid/cfgtoollogs/opatch/opatch_history.txt [Sep 3, 2026 8:03:52 PM] [INFO] [OPSR-TIME] Loading raw inventory [Sep 3, 2026 8:03:52 PM] [INFO] [OPSR-MEMORY] Loaded all components from inventory. Heap memory in use: 16 (MB) [Sep 3, 2026 8:03:52 PM] [INFO] [OPSR-MEMORY] Loaded all one offs from inventory. Heap memory in use: 16 (MB) [Sep 3, 2026 8:03:52 PM] [INFO] [OPSR-TIME] Raw inventory loaded successfully [Sep 3, 2026 8:03:52 PM] [INFO] NApply::no CAS enabled, OPatch runs with legacy process. [Sep 3, 2026 8:03:53 PM] [INFO] Verifying environment and performing prerequisite checks... [Sep 3, 2026 8:03:53 PM] [FINE] Lock the home to access inventory. [Sep 3, 2026 8:03:53 PM] [INFO] [OPSR-TIME] Running prerequisite checks [Sep 3, 2026 8:03:53 PM] [SEVERE] OUI-67100:NApply could not load patch from location '/soft/32226491/32228578' [Sep 3, 2026 8:03:53 PM] [SEVERE] OUI-67073:UtilSession failed: java.lang.RuntimeException: /soft/32226491/32228578/etc/config/actions.xml with Version field of the component "delete" in actions file cannot be <null> or empty. Please check patch metadata. [Sep 3, 2026 8:03:53 PM] [INFO] Finishing UtilSession at Thu Sep 03 20:03:53 CST 2026 [Sep 3, 2026 8:03:53 PM] [INFO] Log file location: /u01/app/12.2.0/grid/cfgtoollogs/opatch/opatch2026-09-03_20-03-49PM_1.log [Sep 3, 2026 8:03:53 PM] [INFO] Stack Description: java.lang.RuntimeException: java.lang.RuntimeException: /soft/32226491/32228578/etc/config/actions.xml with Version field of the component "delete" in actions file cannot be <null> or empty. Please check patch metadata.
Solution
The opatch version too low, upgrade the opatch.
CLSRSC-614: failed to get the list of configured diskgroups
Error occurred while executing $GRID_HOME/root.sh.
2026/09/03 21:39:02 CLSRSC-614: failed to get the list of configured diskgroups Died at /u01/app/12.2.0/grid/crs/install/oraasm.pm line 2069. The command'/u01/app/12.2.0/grid/perl/bin/perl -I/u01/app/12.2.0/grid/perl/lib -I/u01/app/12.2.0/grid/crs/install /u01/app/12.2.0/grid/crs/install/rootcrs.pl ' execution failed
ORA-12012: error on auto execute of job "SYS"."ORA$AT_OS_OPT_SY_"
Error in alert_orcl1.log.
2026-09-05T16:06:02.057495+08:00 Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl2/trace/orcl2_j000_21007.trc: ORA-12012: error on auto execute of job "SYS"."ORA$AT_OS_OPT_SY_145" ORA-20001: Statistics Advisor: Invalid task name for the current user ORA-06512: at "SYS.DBMS_STATS", line 47207 ORA-06512: at "SYS.DBMS_STATS_ADVISOR", line 882 ORA-06512: at "SYS.DBMS_STATS_INTERNAL", line 20059 ORA-06512: at "SYS.DBMS_STATS_INTERNAL", line 22201 ORA-06512: at "SYS.DBMS_STATS", line 47197
It is an Oracle known Bug and can appear when database is created with dbca in oracle 12.2
~]# orachk -autostatus This version of orachk was released on 13-Oct-2020 and it is older than 180 days. No new version of orachk is available in RAT_UPGRADE_LOC. It is highly recommended that you download the latest version of orachk from my oracle support to ensure the highest level of accuracy of the data contained within the report.
orachk daemon is running. Please stop the daemon and start orachk again to download from ARU
