2515894 - SUM error on IBM i: "Error message: DBSL error 29"

• In the upgrade log, you will find something like:
• INFO:  XDN:TraceCurrentDirectory: /usr/sap/SUM/abap/tmp
  INFO:  XDNLevelTraceSetLocation: Trace set to: XDNTrace.*.*
  1EETQ008 Error message: DBSL error 29 (db code 0): Connect failed
  1EETQ003 exit code: "20"
• If it occurs during phase SHADOW_IMPORT_INC, there might be more errors like:
• EXECUTING /usr/sap/<SID>/SUM/abap/bin/SAPuptool optimizeimport /usr/sap/<SID>/SUM/abap/tmp/<SUM> shadow ignorelist=/usr/sap/<SID>/SUM/abap/control/OPTIMPIGNORE.LST
  2 ETQ399 Using external sorter with maxmemory=256 MB and variable length items.                                                    
  2 ETQ399 Using variable length integers for packing objects.                                                                       
  2 ETQ399 Connecting to database 'db4'.                                                                                             
  INFO:  XDN:TraceCurrentDirectory: /usr/sap/<SID>/SUM/abap/tmp                                                                        
  INFO:  XDNLevelTraceSetLocation: Trace set to: XDNTrace.*.*                                                                   
  INFO:  XDN:TraceCurrentDirectory: /usr/sap/<SID>/SUM/abap/tmp                                                                        
  INFO:  XDNLevelTraceSetLocation: Trace set to: XDNTrace.*.*                                                                   
  3EETQ008 Error message: DBSL error 29 (db code 0): Connect failed                                                                  
  INFO:  XDN:TraceCurrentDirectory: /usr/sap/<SID>/SUM/abap/tmp    

SUM on IBM i

ibm i, iseries, as/400, upgrade, sapup, sum, xdn, dbconnect , KBA , BC-DB-DB4 , DB2 for AS/400 , Problem