https://userapps.support.sap.com/sap/support/knowledge/en/3572217
3572217 - DBSQL_SQL_DEADLOCK_DETECTED dump in table SWFDEVENA | SAP Knowledge Base Article
ABAP Program CL_SWF_EVT_TYPE_LINKAGE fails with ABAP dump DBSQL_SQL_DEADLOCK_DETECTED while trying to update table SWFDEVENA.