3464086 - Long runtime in DLT step of FINS_MIG_STATUS ends with ABAP Dump DBSQL_SQL_ERROR

DLT runs for 10+ hours during FIN Migration SAP ECC to S/4HANA.

Then an ABAP dump occurs :

Category               ABAP programming error
Runtime Errors         DBSQL_SQL_ERROR
Except.                CX_SY_OPEN_SQL_DB
ABAP Program           CL_FINS_MIG_DELTA_COMMON======CP
Application Component  FIN-MIG

....

Short Text: Database returned the SQL code 10807-. Error text: Connection down: [89006] System call 'send' failed, rc=73:Connection reset by peer {<Application IP address>:port -> <database host>:3##15 TenantName:(none 

...

On HANA database the indexserver trace for the time of the ABAP dump shows error similar to:

 e KernelSentinel   KernelSentinelJob.cpp(00748) : Killed long-lived suspended cursor. tid=19870523676, connId=308276, duration(s)=44320, lifetime(s)=43200, workloadClass=_SYS_DEFAULT 

SAP HANA, platform edition 2.0

KBA , HAN-DB , SAP HANA Database , HAN-DB-CLI , SAP HANA Clients (JDBC, ODBC) , FIN-MIG-GL , Data migration for General Ledger Accounting , Problem