3250599 - DB6: Client version mismatch error after Db2 upgrade

You have upgrade database to a new version.

Afterwards, you successfully updated CLI driver with the script "db6_update_client.sh" shared in note 1365982 following upgrade guide.

SAP instance fails to start up due to "Client version mismatch" error found in work process trace (dev_w*).

For example:

Info: successfully loaded DB2 library '/usr/sap/ABC/DVEBMGS01/exe/db6_clidriver/lib/libdb2.a(shr_64.o)'
Running with UTF-8 Unicode
DB2 client driver version '10.05.0006'
Running with CLI driver.

Fri Sep  18 12:34:56:007 2022
 CLI cfg for con_hdl=0:
 DSN="ABC";UID="sapdce";DATABASE=ABC;PROTOCOL=TCPIP;HOSTNAME=abcdefg6789d;SERVICENAME=5912;
 Connected to DB server type 'DB2/AIX64'
 Connected to DB server version '11.05.0007'
 DB2 client software level: 10.05.0006
 DB  server software level: 11.05.0007
 *** ERROR = DB2 software level mismatch between client and server.

Nevertheless, "R3trans -d" command finishes successfully.

Info: successfully loaded DB2 library '/usr/sap/ABC/SYS/global/db6/AIX_64/db6_clidriver/lib/libdb2.a(shr_64.o)'
Running with UTF-8 Unicode
DB2 client driver version '11.05.0700'
Running with CLI driver.
Mon Sep 19 12:34:56 2022
CLI cfg for con_hdl=0:
DSN="ABC";UID="sapdce";DATABASE=ABC;PROTOCOL=TCPIP;HOSTNAME=abcdefg1235d;SERVICENAME=5912;
Connected to DB server type 'DB2/AIX64'
Connected to DB server version '11.05.0700'
Connected to 'ABC' as 'SAPABC' schema 'SAPABC' o.k.

SAP on IBM Db2 for Linux, UNIX, and Windows

level mismatch, client driver, server, , KBA , BC-DB-DB6 , DB2 Universal Database for Unix / NT , Problem