Month: February 2020

Apply Patch 28828733 – GI Jan 2019 Release Update 12.2.0.1.190115

Here is the GI environment to be patched:

GI HOME:  12.2.0.1
DB HOMES: 12.2.0.1

Patches downloaded :

GI HOME: 12.2.0.1 : GI Jan 2019 Release Update 12.2.0.1.190115
Patch NumberDescriptionApplicable Homes
28822515Database Jan 2019 Release Update 12.2.0.1.190115Only DB Home for non-Oracle RAC setup. Both DB Homes and Grid Home for Oracle RAC setup.
28870605OCW Jan 2019 Release Update 12.2.0.1.190115Both DB Homes and Grid Home
28864846ACFS Jan 2019 Release Update 12.2.0.1.190115Only Grid Home
26839277DBWLM Release Update 12.2.0.1.170913Only Grid Home
28566910Tomcat Release Update 12.2.0.1.0Only Grid Home

1) Check and install the latest OPatch utility , which should be greater than 12.2.0.1.12 on all RAC nodes .

[grid@racnode1 ~]$ $ORACLE_HOME/OPatch/opatch version
OPatch Version: 12.2.0.1.18

OPatch succeeded.
[grid@racnode2 ~]$ $ORACLE_HOME/OPatch/opatch version
OPatch Version: 12.2.0.1.18

OPatch succeeded.
[grid@racnode2 ~]$

2) Run OPatch Conflict Check.

First run as GI owner grid user:

[grid@racnode1 trace]$ $ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /media/sf_Software/12201-190115/28828733/28822515
Oracle Interim Patch Installer version 12.2.0.1.18
Copyright (c) 2020, Oracle Corporation. All rights reserved.

PREREQ session

Oracle Home : /u01/app/12.2.0.1/grid
Central Inventory : /u01/app/oraInventory
from : /u01/app/12.2.0.1/grid/oraInst.loc
OPatch version : 12.2.0.1.18
OUI version : 12.2.0.1.4
Log file location : /u01/app/12.2.0.1/grid/cfgtoollogs/opatch/opatch2020-02-27_21-01-36PM_1.log

Invoking prereq "checkconflictagainstohwithdetail"

Prereq "checkConflictAgainstOHWithDetail" passed.

OPatch succeeded.
[grid@racnode1 trace]$ $ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /media/sf_Software/12201-190115/28828733/28870605
Oracle Interim Patch Installer version 12.2.0.1.18
Copyright (c) 2020, Oracle Corporation. All rights reserved.

PREREQ session

Oracle Home : /u01/app/12.2.0.1/grid
Central Inventory : /u01/app/oraInventory
from : /u01/app/12.2.0.1/grid/oraInst.loc
OPatch version : 12.2.0.1.18
OUI version : 12.2.0.1.4
Log file location : /u01/app/12.2.0.1/grid/cfgtoollogs/opatch/opatch2020-02-27_21-01-37PM_1.log

Invoking prereq "checkconflictagainstohwithdetail"

Prereq "checkConflictAgainstOHWithDetail" passed.

OPatch succeeded.
[grid@racnode1 trace]$ $ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /media/sf_Software/12201-190115/28828733/28864846
Oracle Interim Patch Installer version 12.2.0.1.18
Copyright (c) 2020, Oracle Corporation. All rights reserved.

PREREQ session

Oracle Home : /u01/app/12.2.0.1/grid
Central Inventory : /u01/app/oraInventory
from : /u01/app/12.2.0.1/grid/oraInst.loc
OPatch version : 12.2.0.1.18
OUI version : 12.2.0.1.4
Log file location : /u01/app/12.2.0.1/grid/cfgtoollogs/opatch/opatch2020-02-27_21-01-38PM_1.log

Invoking prereq "checkconflictagainstohwithdetail"

Prereq "checkConflictAgainstOHWithDetail" passed.

OPatch succeeded.
[grid@racnode1 trace]$ $ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /media/sf_Software/12201-190115/28828733/26839277
Oracle Interim Patch Installer version 12.2.0.1.18
Copyright (c) 2020, Oracle Corporation. All rights reserved.

PREREQ session

Oracle Home : /u01/app/12.2.0.1/grid
Central Inventory : /u01/app/oraInventory
from : /u01/app/12.2.0.1/grid/oraInst.loc
OPatch version : 12.2.0.1.18
OUI version : 12.2.0.1.4
Log file location : /u01/app/12.2.0.1/grid/cfgtoollogs/opatch/opatch2020-02-27_21-01-40PM_1.log

Invoking prereq "checkconflictagainstohwithdetail"

Prereq "checkConflictAgainstOHWithDetail" passed.

OPatch succeeded.
[grid@racnode1 trace]$ $ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /media/sf_Software/12201-190115/28828733/28566910
Oracle Interim Patch Installer version 12.2.0.1.18
Copyright (c) 2020, Oracle Corporation. All rights reserved.

PREREQ session

Oracle Home : /u01/app/12.2.0.1/grid
Central Inventory : /u01/app/oraInventory
from : /u01/app/12.2.0.1/grid/oraInst.loc
OPatch version : 12.2.0.1.18
OUI version : 12.2.0.1.4
Log file location : /u01/app/12.2.0.1/grid/cfgtoollogs/opatch/opatch2020-02-27_21-01-44PM_1.log

Invoking prereq "checkconflictagainstohwithdetail"

Prereq "checkConflictAgainstOHWithDetail" passed.

OPatch succeeded.
[grid@racnode1 trace]$

Second run as Database Home owner user oracle:

[oracle@racnode2 dbhome_1]$ $ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /media/sf_Software/12201-190115/28828733/28822515
Oracle Interim Patch Installer version 12.2.0.1.18
Copyright (c) 2020, Oracle Corporation.  All rights reserved.

PREREQ session

Oracle Home       : /u01/app/oracle/product/12.2.0/dbhome_1
Central Inventory : /u01/app/oraInventory
   from           : /u01/app/oracle/product/12.2.0/dbhome_1/oraInst.loc
OPatch version    : 12.2.0.1.18
OUI version       : 12.2.0.1.4
Log file location : /u01/app/oracle/product/12.2.0/dbhome_1/cfgtoollogs/opatch/opatch2020-02-27_21-20-54PM_1.log

Invoking prereq "checkconflictagainstohwithdetail"

Prereq "checkConflictAgainstOHWithDetail" passed.

OPatch succeeded.
[oracle@racnode2 dbhome_1]$  $ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /media/sf_Software/12201-190115/28828733/28870605
Oracle Interim Patch Installer version 12.2.0.1.18
Copyright (c) 2020, Oracle Corporation.  All rights reserved.

PREREQ session

Oracle Home       : /u01/app/oracle/product/12.2.0/dbhome_1
Central Inventory : /u01/app/oraInventory
   from           : /u01/app/oracle/product/12.2.0/dbhome_1/oraInst.loc
OPatch version    : 12.2.0.1.18
OUI version       : 12.2.0.1.4
Log file location : /u01/app/oracle/product/12.2.0/dbhome_1/cfgtoollogs/opatch/opatch2020-02-27_21-21-07PM_1.log

Invoking prereq "checkconflictagainstohwithdetail"

Prereq "checkConflictAgainstOHWithDetail" passed.

OPatch succeeded.
[oracle@racnode2 dbhome_1]$

3)Run OPatch SystemSpace Check:

Check if enough free space is available on the ORACLE_HOME filesystem for the patches to be applied as given below:

  • For Grid Infrastructure Home, as home user grid:
    1. Create file /tmp/patch_list_gihome.txt with the following content: 
      % cat /tmp/patch_list_gihome.txt

/media/sf_Software/12201-190115/28828733/28822515
/media/sf_Software/12201-190115/28828733/28870605
/media/sf_Software/12201-190115/28828733/28864846
/media/sf_Software/12201-190115/28828733/26839277
/media/sf_Software/12201-190115/28828733/28566910
    2. Run the opatch command to check if enough free space is available in the Grid Infrastructure Home: 
      [grid@racnode1 ~]$ $ORACLE_HOME/OPatch/opatch prereq CheckSystemSpace -phBaseFile /tmp/patch_list_gihome.txt
Oracle Interim Patch Installer version 12.2.0.1.18
Copyright (c) 2020, Oracle Corporation.  All rights reserved.

PREREQ session

Oracle Home       : /u01/app/12.2.0.1/grid
Central Inventory : /u01/app/oraInventory
   from           : /u01/app/12.2.0.1/grid/oraInst.loc
OPatch version    : 12.2.0.1.18
OUI version       : 12.2.0.1.4
Log file location : /u01/app/12.2.0.1/grid/cfgtoollogs/opatch/opatch2020-02-27_21-26-51PM_1.log

Invoking prereq "checksystemspace"

Prereq "checkSystemSpace" passed.

OPatch succeeded.
[grid@racnode1 ~]$

      For Database home, as home user oracle:

      1. Create file /tmp/patch_list_dbhome.txt with the following content: 
        $ cat /tmp/patch_list_dbhome.txt
/media/sf_Software/12201-190115/28828733/28822515
/media/sf_Software/12201-190115/28828733/28870605
      2. Run opatch command to check if enough free space is available in the Database Home: 
        [oracle@racnode1 ~]$ $ORACLE_HOME/OPatch/opatch prereq CheckSystemSpace -phBaseFile /tmp/patch_list_dbhome.txt
Oracle Interim Patch Installer version 12.2.0.1.18
Copyright (c) 2020, Oracle Corporation.  All rights reserved.

PREREQ session

Oracle Home       : /u01/app/oracle/product/12.2.0/dbhome_1
Central Inventory : /u01/app/oraInventory
   from           : /u01/app/oracle/product/12.2.0/dbhome_1/oraInst.loc
OPatch version    : 12.2.0.1.18
OUI version       : 12.2.0.1.4
Log file location : /u01/app/oracle/product/12.2.0/dbhome_1/cfgtoollogs/opatch/opatch2020-02-27_21-37-53PM_1.log

Invoking prereq "checksystemspace"

Prereq "checkSystemSpace" passed.

OPatch succeeded.
[oracle@racnode1 ~]$

4) Check for conflicts in both the 12.2.0.1 GI home and the 12.2.0.1 DB homes.

  • In case you are applying the patch, run this command: 
    [root@racnode1 ~]# /u01/app/12.2.0.1/grid/OPatch/opatchauto apply /media/sf_Software/12201-190115/28828733 -analyze

OPatchauto session is initiated at Thu Feb 27 21:41:27 2020

System initialization log file is /u01/app/12.2.0.1/grid/cfgtoollogs/opatchautodb/systemconfig2020-02-27_09-41-30PM.log.

Session log file is /u01/app/12.2.0.1/grid/cfgtoollogs/opatchauto/opatchauto2020-02-27_09-42-17PM.log
The id for this session is GKR6

Executing OPatch prereq operations to verify patch applicability on home /u01/app/12.2.0.1/grid

Executing OPatch prereq operations to verify patch applicability on home /u01/app/oracle/product/12.2.0/dbhome_1
Patch applicability verified successfully on home /u01/app/oracle/product/12.2.0/dbhome_1

Patch applicability verified successfully on home /u01/app/12.2.0.1/grid


Verifying SQL patch applicability on home /u01/app/oracle/product/12.2.0/dbhome_1

Following step failed during analysis:
 /bin/sh -c 'cd /u01/app/oracle/product/12.2.0/dbhome_1; ORACLE_HOME=/u01/app/oracle/product/12.2.0/dbhome_1 ORACLE_SID=RACTESTB1 /u01/app/oracle/product/12.2.0/dbhome_1/OPatch/datapatch -prereq -verbose'

SQL patch applicability verified successfully on home /u01/app/oracle/product/12.2.0/dbhome_1

OPatchAuto successful.

--------------------------------Summary--------------------------------

Analysis for applying patches has completed successfully:

Host:racnode1
RAC Home:/u01/app/oracle/product/12.2.0/dbhome_1
Version:12.2.0.1.0


==Following patches were SKIPPED:

Patch: /media/sf_Software/12201-190115/28828733/28864846
Reason: This patch is not applicable to this specified target type - "rac_database"

Patch: /media/sf_Software/12201-190115/28828733/26839277
Reason: This patch is not applicable to this specified target type - "rac_database"

Patch: /media/sf_Software/12201-190115/28828733/28566910
Reason: This patch is not applicable to this specified target type - "rac_database"


==Following patches were SUCCESSFULLY analyzed to be applied:

Patch: /media/sf_Software/12201-190115/28828733/28870605
Log: /u01/app/oracle/product/12.2.0/dbhome_1/cfgtoollogs/opatchauto/core/opatch/opatch2020-02-27_21-42-30PM_1.log

Patch: /media/sf_Software/12201-190115/28828733/28822515
Log: /u01/app/oracle/product/12.2.0/dbhome_1/cfgtoollogs/opatchauto/core/opatch/opatch2020-02-27_21-42-30PM_1.log


Host:racnode1
CRS Home:/u01/app/12.2.0.1/grid
Version:12.2.0.1.0


==Following patches were SUCCESSFULLY analyzed to be applied:

Patch: /media/sf_Software/12201-190115/28828733/28870605
Log: /u01/app/12.2.0.1/grid/cfgtoollogs/opatchauto/core/opatch/opatch2020-02-27_21-42-30PM_1.log

Patch: /media/sf_Software/12201-190115/28828733/28864846
Log: /u01/app/12.2.0.1/grid/cfgtoollogs/opatchauto/core/opatch/opatch2020-02-27_21-42-30PM_1.log

Patch: /media/sf_Software/12201-190115/28828733/26839277
Log: /u01/app/12.2.0.1/grid/cfgtoollogs/opatchauto/core/opatch/opatch2020-02-27_21-42-30PM_1.log

Patch: /media/sf_Software/12201-190115/28828733/28566910
Log: /u01/app/12.2.0.1/grid/cfgtoollogs/opatchauto/core/opatch/opatch2020-02-27_21-42-30PM_1.log

Patch: /media/sf_Software/12201-190115/28828733/28822515
Log: /u01/app/12.2.0.1/grid/cfgtoollogs/opatchauto/core/opatch/opatch2020-02-27_21-42-30PM_1.log

Following homes are skipped during patching as patches are not applicable:

/u01/app/oracle/product/12.1.0/dbhome_1

OPatchauto session completed at Thu Feb 27 21:42:41 2020
Time taken to complete the session 1 minute, 14 seconds
[root@racnode1 ~]#
  • In case you are rolling back the patch, run this command: 
    #GRID_HOME/OPatch/opatchauto rollback <UNZIPPED_PATCH_LOCATION>/28828733 -analyze

5) Patch both 12.2.0.2 GI and 12.2.0.1 DB home by running “opatchauto” as root user.

[root@racnode1 ~]# /u01/app/12.2.0.1/grid/OPatch/opatchauto  \
                apply /media/sf_Software/12201-190115/28828733

6) Please repeat step 1 to 5 on node 2.

opatchauto_log

7)Run “datapatch” or post patch SQL as per instructions, if ‘opatchauto’ is not used.

Check the log :

[oracle@racnode2 22636216]$ pwd
/u01/app/oracle/cfgtoollogs/sqlpatch/28822515/22636216
[oracle@racnode2 22636216]$ ls -ltr
total 4772
-rw-r--r-- 1 oracle oinstall 520670 Feb 27 22:42 28822515_apply_RACTESTB_CDBROOT_2020Feb27_22_40_48.log
-rw-r--r-- 1 oracle oinstall 4358895 Feb 27 22:43 28822515_apply_RACTESTB_PDBSEED_2020Feb27_22_42_13.log
[oracle@racnode2 22636216]$

8) Check the patches applied.

a) Run ‘opatch lsinventory’ against both GI and DB homes.

As GI Home owner grid user:

[grid@racnode1]$ opatch lsinventory

As DB Home owner oracle user:

[oracle@racnode1]$ opatch lsinventory

b) Query database .

SQL> select PATCH_ID, VERSION, ACTION, STATUS, DESCRIPTION 
     from dba_registry_sqlpatch;

PATCH_ID   VERSION  ACTION  STATUS DESCRIPTION
---------- -------- ------ ------- -------------------------------------
28822515   12.2.0.1 APPLY  SUCCESS DATABASE JAN 2019 RELEASE UPDATE 12.2.0.1.190115
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CRS-1714: Unable to discover any voting files, retrying discovery in 15 seconds

One of the two RAC nodes failed to startup CRS with following messages in alert log:

2020-02-27 20:17:50.802 [OCSSD(14861)]CRS-1714: Unable to discover 
    any voting files, retrying discovery in 15 seconds; Details at 
(:CSSNM00070:)in /u01/app/grid/diag/crs/racnode1/crs/trace/ocssd.trc

ocssd.trc:

2020-02-27 20:17:50.801 : CSSD:3324163840: clssnmReadDiscoveryProfile: voting file discovery string(/dev/oracleasm/disks)
2020-02-27 20:17:50.801 : CSSD:3324163840: clssnmvDDiscThread: using discovery string /dev/oracleasm/disks for initial discovery
2020-02-27 20:17:50.801 : SKGFD:3324163840: Discovery with str:/dev/oracleasm/disks:
2020-02-27 20:17:50.801 : SKGFD:3324163840: UFS discovery with :/dev/oracleasm/disks:
2020-02-27 20:17:50.801 : SKGFD:3324163840: Execute glob on the string /dev/oracleasm/disks
2020-02-27 20:17:50.801 : SKGFD:3324163840: OSS discovery with :/dev/oracleasm/disks:
2020-02-27 20:17:50.802 : SKGFD:3324163840: Discovery skipping bad asmlib :ASM::
2020-02-27 20:17:50.802 : CSSD:3324163840: clssnmvDiskVerify: Successful discovery of 0 disks
2020-02-27 20:17:50.802 : CSSD:3324163840: clssnmCompleteInitVFDiscovery: Completing initial voting file discovery
2020-02-27 20:17:50.802 : CSSD:3324163840: clssnmvFindInitialConfigs: No voting files found
2020-02-27 20:17:50.802 : CSSD:3324163840: (:CSSNM00070:)clssnmCompleteInitVFDiscovery: Voting file not found. Retrying discovery in 15 seconds
2020-02-27 20:17:51.687 : CSSD:3558553344: clsssc_CLSFAInit_CB: System not ready for CLSFA initialization
2020-02-27 20:17:52.687 : CSSD:3558553344: clsssc_CLSFAInit_CB: System not ready for CLSFA initialization
2020-02-27 20:17:53.687 : CSSD:3558553344: clsssc_CLSFAInit_CB: System not ready for CLSFA initialization
2020-02-27 20:17:54.687 : CSSD:3558553344: clsssc_CLSFAInit_CB: System not ready for CLSFA initialization
2020-02-27 20:17:55.688 : CSSD:3558553344: clsssc_CLSFAInit_CB: System not ready for CLSFA initialization
2020-02-27 20:17:56.688 : CSSD:3558553344: clsssc_CLSFAInit_CB: System not ready for CLSFA initialization
2020-02-27 20:17:57.688 : CSSD:3558553344: clsssc_CLSFAInit_CB: System not ready for CLSFA initialization

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Oracle Updates and Revisions Patching Path

RU/RUR Update/Revision

From  release 12.2.0.1, “Release Update” ( RU)  and ” Release Update Revision” ( RUR)  are released, which replace the legacy PSUs and Proactive Bundle ( PB ) Patches.

From release 18 onwards, the terms ‘Update‘ and ‘Revision‘ are used instead of “Release Update” ( RU ) and ” Release Update Revision”( RUR ) in 12.2.0.1.

Oracle release pattern of Updates and Releases

Oracle release pattern of Updates and Releases
Oracle release pattern of Updates and Releases

Updates and Revisions Patching Path

Updates and Revisions Patching Path
Updates and Revisions Patching Path

The patching path is either :

  • Vertically upward
  • Progressive diagonal
  • Progressive straight.

From an Update, the patching direction should be to either its 2 Revisions, released in consecutive quarters, OR the next quarter’s Update. There is no moving backward or vertical down.

If database is at Update 18.3.0 at the moment, the possible patching path could be :

Update 18.3.0  -> Revisions 18.3.1 , 18.3.2, 18.4.1 and so on
                              or
Update 18.3.0 ->  Updates 18.4.0 , 18.5.0 and so on

Below patching path is NOT supported, because backward patching is non-cumulative. There is no moving back to earlier Release’s Updates and Revisions.

Update 18.3.0 -> Revisions 18.2.1 or 18.2.2 OR to Update 18.2.0

If database is at Revision 18.2.2 at the moment, the possible patching path could be :

Revision 18.2.2 -> Revisions 18.3.1 , 18.3.2, 18.4.1 and so on
                    or
Revision 18.2.2 -> Updates 18.4.0 , 18.5.0 and so on.

Below patching path is NOT supported, Because Update 18.3.0 is non-cumulative to 18.2.2.

Revision 18.2.2 -> Revision 18.2.1 or to Update 18.3.0

SQL Database Volume Full due to Volume Shadow Copy Service (VSS)

One data volume with data files is full, but the database whole size is relatively small.  Finally it is because of Volume Shadow Copy Service (VSS),

To check VSS configuration and how much disk space used by VSS :

Disk Management –> Right Click C: Drive, then Properties –>Shadow Copies –> Settings.

VirtualBox shared folder is not working, Kernel headers not found for target kernel, Unable to Install Guest Additions on Oracle Linux 7.7

VirtualBox shared folder is not working, and the VirtualBOx shows below warning message:

“The VirtualBox Guest Additions do not appear to be available on this virtual machine, and shared folders cannot be used without them. to use shared folders inside the virtual machine, please install the Guest Additions in they are not installed, or re-install them if they are not working properly, by selecting Insert Guest Additions CD image from the Devices menu. if they are installed but the machine is not yet fully started then shared folders will be available once it.”

VirtualBox Guest Additions Error
VirtualBox Guest Additions Error

After selecting Insert Guest Additions CD image from the Devices menu, we can see the Additions CD images are mounted.

Insert Guest Additions CD image
Insert Guest Additions CD image

But the shared folder is still not working.

[root@racnode1 media]# df -h
Filesystem           Size  Used Avail Use% Mounted on
devtmpfs             4.8G     0  4.8G   0% /dev
tmpfs                2.0G  645M  1.4G  32% /dev/shm
tmpfs                4.8G  8.6M  4.8G   1% /run
tmpfs                4.8G     0  4.8G   0% /sys/fs/cgroup
/dev/mapper/ol-root   61G   33G   29G  53% /
/dev/sda1            497M  120M  377M  25% /boot
tmpfs                973M     0  973M   0% /run/user/0
[root@racnode1 media]#

Now we manually mount the Additions CD images:

[root@racnode1 ~]# mount /dev/cdrom /media/cdrom
mount: /dev/sr0 is write-protected, mounting read-only
[root@racnode1 ~]#

Install Guest Additions CD Image manually with errors.

[root@racnode1 ~]# cd /media/cdrom
[root@racnode1 cdrom]# ls -ltr
total 45524
-r--r--r-- 1 root root 763 Mar 13 2019 AUTORUN.INF
-r-xr-xr-x 1 root root 6384 Mar 13 2019 autorun.sh
-r-xr-xr-x 1 root root 4821 Mar 13 2019 runasroot.sh
-r-xr-xr-x 1 root root 270616 Jan 13 22:08 VBoxWindowsAdditions.exe
-r-xr-xr-x 1 root root 9795088 Jan 13 22:09 VBoxWindowsAdditions-x86.exe
-r-xr-xr-x 1 root root 16776232 Jan 13 22:12 VBoxWindowsAdditions-amd64.exe
-r-xr-xr-x 1 root root 3949 Jan 13 22:21 VBoxDarwinAdditionsUninstall.tool
-r--r--r-- 1 root root 3744169 Jan 13 22:21 VBoxDarwinAdditions.pkg
-r-xr-xr-x 1 root root 6716837 Jan 13 22:21 VBoxLinuxAdditions.run
-r--r--r-- 1 root root 9287680 Jan 13 22:22 VBoxSolarisAdditions.pkg
-r--r--r-- 1 root root 547 Jan 13 22:26 TRANS.TBL
dr-xr-xr-x 2 root root 2652 Jan 13 22:26 OS2
dr-xr-xr-x 2 root root 1824 Jan 13 22:26 NT3x
dr-xr-xr-x 2 root root 792 Jan 13 22:26 cert

[root@racnode1 cdrom]# ./VBoxLinuxAdditions.run
Verifying archive integrity... All good.
Uncompressing VirtualBox 6.1.2 Guest Additions for Linux........
VirtualBox Guest Additions installer
Removing installed version 5.0.10 of VirtualBox Guest Additions...
Removing existing VirtualBox non-DKMS kernel modules[ OK ]
Copying additional installer modules ...
Installing additional modules ...
VirtualBox Guest Additions: Starting.
VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel
modules. This may take a while.
VirtualBox Guest Additions: To build modules for other installed kernels, run
VirtualBox Guest Additions: /sbin/rcvboxadd quicksetup <version>
VirtualBox Guest Additions: or
VirtualBox Guest Additions: /sbin/rcvboxadd quicksetup all
VirtualBox Guest Additions: Kernel headers not found for target kernel
4.14.35-1902.8.4.el7uek.x86_64. Please install them and execute
/sbin/rcvboxadd setup
modprobe vboxguest failed
The log file /var/log/vboxadd-setup.log may contain further information.
[root@racnode1 cdrom]#

There is no 4.14.35-1902.8.4.el7uek.x86_64 kernel header.

[root@racnode1 ~]# ls -ltr /usr/src/kernels/
drwxr-xr-x  3 root root   20 Jan  6 15:33 3.10.0-327.el7.x86_64
drwxr-xr-x  3 root root   20 Jan  6 15:33 3.10.0-229.el7.x86_64
[root@racnode1 ~]#

Ignore the misleading messages in /var/log/vboxadd-setup.log.

[root@racnode1 ~]# cat /var/log/vboxadd-setup.log
Could not find the X.Org or XFree86 Window System, skipping.

Check and install the following missing packages:

[root@racnode1 tmp]# yum install kernel-header* glibc-header*  
glibc-devel*  gcc-4* cpp*  kernel-uek-devel*

Then install Guest Additions again successfully.

[root@racnode1 cdrom]# ./VBoxLinuxAdditions.run
Verifying archive integrity... All good.
Uncompressing VirtualBox 6.1.2 Guest Additions for Linux........
VirtualBox Guest Additions installer
Removing installed version 6.1.2 of VirtualBox Guest Additions...
Copying additional installer modules ...
Installing additional modules ...
VirtualBox Guest Additions: Starting.
VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel
modules. This may take a while.
VirtualBox Guest Additions: To build modules for other installed kernels, run
VirtualBox Guest Additions: /sbin/rcvboxadd quicksetup <version>
VirtualBox Guest Additions: or
VirtualBox Guest Additions: /sbin/rcvboxadd quicksetup all
VirtualBox Guest Additions: Building the modules for kernel
4.14.35-1902.10.7.el7uek.x86_64.
[root@racnode1 cdrom]#
[root@racnode1 ~]# ls -ltr /usr/src/kernels/
drwxr-xr-x  3 root root   20 Jan  6 15:33 3.10.0-327.el7.x86_64
drwxr-xr-x  3 root root   20 Jan  6 15:33 3.10.0-229.el7.x86_64
drwxr-xr-x 24 root root 4096 Feb 23 02:54 4.14.35-1902.10.7.el7uek.x86_64
[root@racnode1 ~]#

And the shared folders are working now.

[root@racnode1 ~]# df -h
Filesystem           Size  Used Avail Use% Mounted on
...
..
.
/dev/sr0              57M   57M     0 100% /media/cdrom
12.2.0.1             932G  488G  444G  53% /media/sf_Software

[root@racnode1 ~]#

Appendix

Upgrade VirtualBox Additions from VirtualBox 6.1.2 to 6.1.4 successfully.

[root@racnode1 cdrom]# ./VBoxLinuxAdditions.run
Verifying archive integrity... All good.
Uncompressing VirtualBox 6.1.4 Guest Additions for Linux........
VirtualBox Guest Additions installer
Removing installed version 6.1.2 of VirtualBox Guest Additions...
Copying additional installer modules ...
Installing additional modules ...
VirtualBox Guest Additions: Starting.
VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel
modules. This may take a while.
VirtualBox Guest Additions: To build modules for other installed kernels, run
VirtualBox Guest Additions: /sbin/rcvboxadd quicksetup <version>
VirtualBox Guest Additions: or
VirtualBox Guest Additions: /sbin/rcvboxadd quicksetup all
VirtualBox Guest Additions: Building the modules for kernel
4.14.35-1902.10.7.el7uek.x86_64.
VirtualBox Guest Additions: Running kernel modules will not be replaced until
the system is restarted
[root@racnode1 cdrom]#