3144166 - Error message: DBSL error 29 (db code 0): Connect failed in MOD_SELROADMAP/DBCONNCHK_PRE

Database connection failed in SUM phase MOD_SELROADMAP/DBCONNCHK_PRE with below error:

EXECUTING /usr/sap/A06/SUM/abap/bin/SAPuptool dbversion

2 ETQ399 Connecting to database 'ORA'.

3EETQ008 Error message: DBSL error 29 (db code 0): Connect failed

A0TEDBSL 000 (20220118080345.234:ulsqlbase.c:925) [/bas/753_R, 2988]: Oracle server 12.2 only supported with Oracle client >= 12.1

A0TEDBSL 000 (20220118080345.234:ulsqlbase.c:925) [/bas/753_R, 3069]:    Logging off con=0 because of error 15=DBSL_ERR_UNSUPPORTED.

4EETQ399 1 [/bas/753_R,18460]: Connecting as SAPSR3/<pwd>@A06 on connection 0 (nls 0) ... (dbsl 753 020921, UNICODE[2], LE)

4EETQ399 1 [/bas/753_R, 5644]: OCISessionBegin(con=0, svc=55ff9c952130, srv=55ff9c954a18='A06'): start session usr=55ff9c983b68='SAPSR3', rc=0

4EETQ399 1 [/bas/753_R,18487]: Now 'SAPSR3/<pwd>@A06' is connected: con=0, nls=0, session=151, time='2022-01-18 08:03:45'

4EETQ399 0 [/bas/753_R, 2988]: Oracle server 12.2 only supported with Oracle client >= 12.1

4EETQ399 0 [/bas/753_R, 3069]:    Logging off con=0 because of error 15=DBSL_ERR_UNSUPPORTED.

4EETQ399 1 [/bas/753_R,18535]: Disconnecting con=0

4EETQ399 1 [/bas/753_R, 5745]: OCISessionEnd(con=0, svc=55ff9c952130, srv=55ff9c954a18='A06'): Close session usr=55ff9c983b68, rc=0

1EETQ008 Error message: DBSL error 29 (db code 0): Connect failed

1EETQ003 exit code: "20"

SAPup> Process with PID 18162 terminated with status 20 at 20220118080345!

The issue may also occur if there is a client shared object in kernel, this may occur due to improper Oracle instant client installation/configuration.
 

Oracle Database Release Independent

UNIX/Linux

DBSL error 29, Connect failed, DBSL_ERR_UNSUPPORTED, MOD_SELROADMAP/DBCONNCHK_PRE