sqlplus banner from ASM shows version 19.3.0.0.0 even though RU 19.4 applied (Doc ID 2588500.1)

sqlplus banner from ASM shows version 19.3.0.0.0 even though RU 19.4 applied (Doc ID 2588500.1)       

In this Document
Symptoms
Changes
Cause
Solution

APPLIES TO:
Oracle Database - Enterprise Edition - Version 19.3.0.0.0 and later
Information in this document applies to any platform.
SYMPTOMS
After patching to 19.4 RU ,sqlplus banner still showing as 19.3.0.0.0 for ASM for one of the node ,say here it's Node 2.

Node 2:

[+ASM2] ]$ sqlplus
SQL*Plus: Release 19.0.0.0.0 - Production on <timestamp>
Version 19.4.0.0.0
Copyright (c) 1982, 2019, Oracle.  All rights reserved.
Enter user-name: / as sysdba
Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.3.0.0.0
SQL> select * from v$version ;

BANNER
--------------------------------------------------------------------------------
BANNER_FULL
--------------------------------------------------------------------------------
BANNER_LEGACY
--------------------------------------------------------------------------------    
   CON_ID
----------
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.3.0.0.0
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
    
Node 1:

+ASM1] ]$ sqlplus
SQL*Plus: Release 19.0.0.0.0 - Production on <timestamp>
Version 19.4.0.0.0
Copyright (c) 1982, 2019, Oracle.  All rights reserved.
Enter user-name: / as sysdba
Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.4.0.0.0
SQL> select * from v$version ;

BANNER
--------------------------------------------------------------------------------
BANNER_FULL
--------------------------------------------------------------------------------
BANNER_LEGACY
--------------------------------------------------------------------------------    
   CON_ID
----------
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.4.0.0.0
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
        0
 

Both the node has 19.4 RU applied to GI Home:
 

[+ASM1] ]$ crsctl query crs releasepatch
Oracle Clusterware release patch level is [XXXXXXXX] and the complete list of patches [29401763 29517242 29517247 29585399 29834717 29850993 29851014 ] have been applied on the local node. The release patch string is [19.4.0.0.0].

[+ASM2] ]$ crsctl query crs releasepatch
Oracle Clusterware release patch level is [XXXXXXXX] and the complete list of patches [29401763 29517242 29517247 29585399 29834717 29850993 29851014 ] have been applied on the local node. The release patch string is [19.4.0.0.0].
 

CAUSE
libsqlplus.so value on Node 2  has different values then the node 1:

NODE 2:

[+ASM2] ]$ ls -la $GI_HOME/lib/*libsqlplus*
-rw-r--r--. 1 root oinstall 1573416 Aug 24 20:56 $GI_HOME/lib/libsqlplus.so

NODE 1 :

[+ASM1] ]$ ls -la $GI_HOME/lib/*libsqlplus*
-rw-r--r--. 1 root oinstall 1572880 Aug 29 16:35 $GI_HOME/lib/libsqlplus.so

SOLUTION
Please relink the GI Home for node 2:

1) As root OS user, please unlock the Grid Infrastructure Oracle Home as follows:

# cd < Grid Infrastructure Oracle Home >/crs/install
# rootcrs.sh -unlock

2) As the Oracle Grid Infrastructure owner relink the Grid Infrastructure Oracle Home as follows:

$ export ORACLE_HOME=< Grid Infrastructure Oracle Home >
$ < Grid Infrastructure Oracle Home>/bin/relink all

3) As root OS user again, please execute the next commands :

# cd < Grid Infrastructure Oracle Home >/rdbms/install/
# ./rootadd_rdbms.sh
# cd < Grid Infrastructure Oracle Home >/crs/install
# rootcrs.sh -lock

4) As root OS user, to Start the Cluster:
#crsctl start crs

And now   shows  correct version 19.4.0.0.0