2364586 - Message Monitor times out

Within SAP Process Integration / Process Orchestration, the Message Monitor is taking a long time to open and then it times out with error "500 Connection timed out".

In the defaultTrace file you can see the following entry:

...sap.com/tc~lm~itsam~co~ui~xi~msg~wdcom.sap.tc.lm.itsam.co.ui.xi.msg.ximessagedetailed.XIMessageDetailed.fillValueHelpsForIDocTechnicalAttributes...
...[EXCEPTION]
javax.management.InstanceNotFoundException: com.sap.default:SAP_ITSAMJ2eeCluster.CreationClassName=SAP_ITSAMXIIDOCMonitorSvc,SAP_ITSAMXIIDOCMonitorSvc.SystemName=SAP_ITSAMXIIDOCMonitorSvc...
...at com.sap.tc.lm.itsam.co.ui.xi.msg.ximessagedetailed.MessageFilter.fillValueHelpsForIDocTechnicalAttributes...

Thread dumps reveal the thread hangs while reading the data from the SocketInputStream coming from the Sybase database, with a call stack similar to the one below:

java.lang.Thread.State: RUNNABLE
at java.net.SocketInputStream.socketRead0(Ljava/io/FileDescriptor;[BIII)I(Native Method)
at java.net.SocketInputStream.read([BII)I(SocketInputStream.java:129)
at com.sybase.jdbc4.timedio.RawDbio.reallyRead(J)I(RawDbio.java:404)
at com.sybase.jdbc4.timedio.Dbio.doRead(J)V(Dbio.java:257)
at com.sybase.jdbc4.timedio.InStreamMgr.readIfOwner(ILcom/sybase/jdbc4/timedio/StreamContext;)V(InStreamMgr.java:583)
at com.sybase.jdbc4.timedio.InStreamMgr.doRead(Lcom/sybase/jdbc4/timedio/StreamContext;)V(InStreamMgr.java:319)
at com.sybase.jdbc4.tds.TdsProtocolContext.getChunk()Lcom/sybase/jdbc4/utils/BufferInterval;(TdsProtocolContext.java:622)
at com.sybase.jdbc4.tds.PduInputFormatter.readPacket()Z(PduInputFormatter.java:239)
at com.sybase.jdbc4.tds.PduInputFormatter.read()I(PduInputFormatter.java:72)
at com.sybase.jdbc4.tds.TdsInputStream.read()I(TdsInputStream.java:91)
at com.sybase.jdbc4.tds.TdsInputStream.readUnsignedByte()I(TdsInputStream.java:124)
at com.sybase.jdbc4.tds.Tds.nextResult(Lcom/sybase/jdbc4/jdbc/ProtocolContext;)I(Tds.java:2912)
at com.sybase.jdbc4.jdbc.ResultGetter.nextResult()I(ResultGetter.java:78)
at com.sybase.jdbc4.jdbc.SybStatement.nextResult(Lcom/sybase/jdbc4/jdbc/ParamManager;)I(SybStatement.java:294)
at com.sybase.jdbc4.jdbc.SybStatement.nextResult()I(SybStatement.java:276)
at com.sybase.jdbc4.jdbc.SybStatement.queryLoop()Ljava/sql/ResultSet;(SybStatement.java:2643)
at com.sybase.jdbc4.jdbc.SybStatement.executeQuery(Ljava/lang/String;Lcom/sybase/jdbc4/jdbc/ParamManager;)Ljava/sql/ResultSet;(SybStatement.java:2629)
at com.sybase.jdbc4.jdbc.SybPreparedStatement.executeQuery()Ljava/sql/ResultSet;(SybPreparedStatement.java:279)
at com.sap.sql.jdbc.basic.BasicPreparedStatement.executeQuery()Ljava/sql/ResultSet;(BasicPreparedStatement.java:102)
at com.sap.sql.jdbc.syb.SybPreparedStatement.executeQuery()Ljava/sql/ResultSet;(SybPreparedStatement.java:33)
at com.sap.sql.jdbc.direct.DirectPreparedStatement.executeQuery(Lcom/sap/sql/trace/TraceContext;)Ljava/sql/ResultSet;(DirectPreparedStatement.java:314)
at com.sap.sql.jdbc.common.CommonPreparedStatement.executeQuery()Ljava/sql/ResultSet;(CommonPreparedStatement.java:245)
...

• SAP NetWeaver 7.3
• SAP enhancement package 1 for SAP NetWeaver 7.3
• SAP NetWeaver 7.4
• SAP NetWeaver 7.5

Loading, Load, Performance, Slow, Waiting, Timed_waiting, Monitor, Message, Timeout, Timed out, Times out, Sybase, IDoc, Process Integration 7.30, PI 7.30, Process Integration 7.31, PI 7.31, Process Orchestration 7.40, PI 7.40, PO 7.40, Process Orchestration 7.50, PI 7.50, PO 7.50, NetWeaver, XI , KBA , BC-NWA-XPI , Process Integration (PI) Monitoring , Problem