3198983 - Connection to MaxDB database fails with "RTE:protocol error" - NetWeaver

• DB59 connection test fails on step 3:
  
  dbmcli_neg: dbmcli_command_execute_error
  112Error!Connection failed to note <hostname>
  14 protocol error
  44 External program terminated with error code 2
  Determine status using SQL connection
  RC: 10709-
  Connection failed (RTE:protocol error)
  10709 Connection failed (RTE:protocol error) ...
  
  
• dev trace shows:
  
  C  *** ERROR => Connect to DBM server failed, rc = -10709 (Connection failed (RTE:protocol error))
  
  B  ***LOG BY2=> sql error -10709 performing CON [dbds         1001]
  B  ***LOG BY0=> Connection failed (RTE:protocol error) [dbds         1001]
  B  *** ERROR => Could not get a shared connection for CONNAME = <SID>+ ab_get_connection: rc = -2
   [dbacds.c     893]
  
  
• xserver_<host>_7200.prt shows:
  
  ERR 11824 Illegal VARPART value length: 65
  
  
• dbmcli -d <DBID> -u control,password
  Error! Connection failed to node (local) for database <SID>:
  protocol error:got EVENTLIST
  11824 2022-06-07 10:47:09.000 ERROR: Illegal VARPART value length: 65 - (RTEReqRespPacket::GetVarPartValue)

SAP MaxDB/liveCache on NetWeaver

protocol error, -10709, Illegal VARPART value length , KBA , BC-DB-SDB , MaxDB , Problem