Solution : https://service.sap.com/sap/support/notes/436980 (SAP Service marketplace login required)
Key words : 
additional key words sql-error -134, attached correction instructions execute, prerequisites commit work commands, commit work command, overflowing database buffer, source code corrections, table' error message, 'sql error, dbif_rsql_sql_error error, isam error
Related Notes : 
       
| 397094 | DB error in client copy for too many addresses | 
| 350101 | CC-TOPIC: Client copy and addresses up to 4.6D | 
| 130540 | CC-TOPIC: Client copy and addresses in 4.0B | 
| 96296 | CC-ERROR: Database problem in client copy | 
| 67205 | CC-INFO: Copying large and productive clients | 
| 17267 | SQL Error "ISAM-134: no more locks" |