Could not open a connection to host on port 23 : Connect failed

Hi,
I am using Oracle Unbrakeable Linux 5, when i try to connect to the server from the client machine using TELNET, i get the following error
c:/> telnet 192.168.6.184
Connecting to 192.168.6.184...Could not open a connection to host on port 23 : Connect failed.
regards,
Charan

Hi,
i did the following but still doesn't work
# mv /etc/securetty /etc/securetty.bak
The following is the Hosts file
=====================
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1     localhost.localdomain     localhost
192.168.6.184     vision12.dsrc2.com     vision12
#::1          localhost6.localdomain6     localhost6
192.168.6.181     prod20.dsrc2.com     prod20
============================================================
When i try to connect to other server using TELNET from this server, i am able to connect. and when i try to connect to this server from other server using TELNET i am able to connect. But, when i try to connect from the CLIENT Machine, i am not able to connect, the client machine is Windows 2000 Professional.
SERVER to SERVER communication using TELNET is working.
CLIENT to SERVER communication using TELNET is not working.
regards,
Charan

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    http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=348662&SiteID=1
    a. use "sc query mssqlserver" for default instance or "sc query mssql$<instancename>" to make sure SQL Server was started. Sometimes, reseason behind the broken of your client application w/ this error:40 might be SQL server restarted and failed, so, it'd better for you to double check.
    b. User specified wrong server in their connection string, as described in the forum discussion, "MSSQLSERVER" is an invalid instance name. Remember, when you connect to default instance, <machinename> could be best representitive for the instance, when you connect to a named instance such as sqlexpress, you should specify <machinename>\<instancename> as data source in your connection string.
     V. Other reasons such as incorrect security context.
    Check out: http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=192622&SiteID=1
    Such error also occured during user operation such as moving database or db mirroring or cluster, any DB OP that might invovle different sql instances, namely, the destination database is located in another sql instance and user is not aware of the state of the destination. I recommend you first isolate whether this fail is during connection stage or data operation stage.
    a. During data operation, you are normally asked to type in the destination server name whether it is default to "(local)" or another server "<remotemachinename>". So, remember the exact string that represent the target instance, then when the error repros, open command line, use "sqlcmd -S<representitive> -E" ,see what happens, if the connection fail, please follow up above I - IV troubleshooting lists. otherwise continue.
    b. If you can make basic conection, but still face the error, then there must be something that server reject the connection or client close the connection for some reason.
    VI. Please try basic connectivity tests between the two mahcines you are working on. One simple way to verifty connectivity is to use command line tools, such as osql.exe. For example, osql -E -Stcpervername\instancename. If it connects cross-machine successfully, please also verify that your connection string in your scenario is correct.
    Here are some blogs which could be helpful: just follow the basic connectivity troubleshooting guidelines on the SQL Protocols blog, see:
    SQL Server 2005 Connectivity Issue Troubleshoot - Part I
    http://blogs.msdn.com/sql_protocols/archive/2005/10/22/483684.aspx
    and
    SQL Server 2005 Connectivity Issue Troubleshoot - Part II
    http://blogs.msdn.com/sql_protocols/archive/2005/10/29/486861.aspx
    Hope this helps.

  • Could not open connection to the SERVER

    Below is the error message that i have encountered.
    I am using Java version 7.
    Also tried installing the previous versions as well.
    But when i check the connection using the ODBS data source administrator i was able to connect the server.
    !ENTRY com.sap.ndb.studio.navigator 4 1 2014-06-24 00:25:17.142
    !MESSAGE HDB skvk.vm.cld.sr 00 (SYSTEM) Error while refreshing system
    !SUBENTRY 1 com.sap.ndb.studio.navigator 4 0 2014-06-24 00:25:17.142
    !MESSAGE SAPControl request failed
    !STACK 0
    com.sap.ndb.studio.sapcontrol.SAPControlException: SAPControl request failed
         at com.sap.ndb.studio.sapcontrol.operations.SAPControlOperation.execute(SAPControlOperation.java:118)
         at com.sap.ndb.studio.sapcontrol.SAPControl.getInstanceProperties(SAPControl.java:507)
         at com.sap.ndb.studio.navigator.operations.SAPSystemObjectUpdate.executeTrySAPControl(SAPSystemObjectUpdate.java:147)
         at com.sap.ndb.studio.navigator.operations.SAPSystemObjectUpdate.execute(SAPSystemObjectUpdate.java:79)
         at com.sap.ndb.studio.navigator.operations.UpdateSAPSystemOperation.execute(UpdateSAPSystemOperation.java:73)
         at com.sap.ndb.studio.datamodel.controler.DataModelOperation.execute(DataModelOperation.java:70)
         at com.sap.ndb.studio.datamodel.controler.DataModelOperationQueue$DataModelOperationThread.run(DataModelOperationQueue.java:99)
    Caused by: com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl: com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl: Message send failed
         at com.sun.xml.internal.messaging.saaj.client.p2p.HttpSOAPConnection.call(Unknown Source)
         at com.sap.ndb.studio.sapcontrol.operations.SAPControlOperation.execute(SAPControlOperation.java:94)
         ... 6 more
    Caused by: com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl: Message send failed
         at com.sun.xml.internal.messaging.saaj.client.p2p.HttpSOAPConnection.post(Unknown Source)
         ... 8 more
    Caused by: java.net.SocketException: Connection reset
         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
         at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
         at java.lang.reflect.Constructor.newInstance(Unknown Source)
         at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)
         at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)
         at java.security.AccessController.doPrivileged(Native Method)
         at sun.net.www.protocol.http.HttpURLConnection.getChainedException(Unknown Source)
         at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
         at java.net.HttpURLConnection.getResponseCode(Unknown Source)
         ... 9 more
    Caused by: java.net.SocketException: Connection reset
         at java.net.SocketInputStream.read(Unknown Source)
         at java.net.SocketInputStream.read(Unknown Source)
         at java.io.BufferedInputStream.fill(Unknown Source)
         at java.io.BufferedInputStream.read1(Unknown Source)
         at java.io.BufferedInputStream.read(Unknown Source)
         at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
         at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
         at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
         ... 11 more
    !SUBENTRY 1 com.sap.ndb.studio.navigator 4 4 2014-06-24 00:25:17.143
    !MESSAGE Database connection is not available. See error log for details.
    !STACK 0
    com.sap.ndb.studio.jdbc.JDBCConnectionStatus: Database connection is not available. See error log for details.
         at com.sap.ndb.studio.jdbc.JDBCPlugin.createConnection(JDBCPlugin.java:253)
         at com.sap.ndb.studio.navigator.operations.SAPSystemObjectUpdate.executeTryJDBC(SAPSystemObjectUpdate.java:268)
         at com.sap.ndb.studio.navigator.operations.SAPSystemObjectUpdate.execute(SAPSystemObjectUpdate.java:96)
         at com.sap.ndb.studio.navigator.operations.UpdateSAPSystemOperation.execute(UpdateSAPSystemOperation.java:73)
         at com.sap.ndb.studio.datamodel.controler.DataModelOperation.execute(DataModelOperation.java:70)
         at com.sap.ndb.studio.datamodel.controler.DataModelOperationQueue$DataModelOperationThread.run(DataModelOperationQueue.java:99)
    Caused by: com.sap.db.jdbc.exceptions.jdbc40.SQLNonTransientConnectionException: Data receive failed .
         at com.sap.db.jdbc.exceptions.jdbc40.SQLNonTransientConnectionException.createException(SQLNonTransientConnectionException.java:40)
         at com.sap.db.jdbc.exceptions.SQLExceptionSapDB.createException(SQLExceptionSapDB.java:241)
         at com.sap.db.jdbc.exceptions.SQLExceptionSapDB.createException(SQLExceptionSapDB.java:203)
         at com.sap.db.jdbc.exceptions.SQLExceptionSapDB.generateSQLException(SQLExceptionSapDB.java:155)
         at com.sap.db.jdbc.exceptions.ConnectionException.createException(ConnectionException.java:22)
         at com.sap.db.jdbc.ConnectionSapDB.tryReconnect(ConnectionSapDB.java:1631)
         at com.sap.db.jdbc.ConnectionSapDB.execute(ConnectionSapDB.java:1131)
         at com.sap.db.jdbc.CallableStatementSapDB.sendCommand(CallableStatementSapDB.java:1964)
         at com.sap.db.jdbc.StatementSapDB.sendSQL(StatementSapDB.java:978)
         at com.sap.db.jdbc.CallableStatementSapDB.doParse(CallableStatementSapDB.java:256)
         at com.sap.db.jdbc.CallableStatementSapDB.constructor(CallableStatementSapDB.java:215)
         at com.sap.db.jdbc.CallableStatementSapDB.(CallableStatementSapDBFinalize.java:31)
         at com.sap.db.jdbc.ConnectionSapDB.prepareStatement(ConnectionSapDB.java:1369)
         at com.sap.db.jdbc.trace.log.Connection.prepareStatement(Connection.java:1025)
         at com.sap.db.jdbc.trace.Connection.prepareStatement(Connection.java:413)
         at com.sap.ndb.studio.jdbc.JDBCConnection.initialize(JDBCConnection.java:235)
         at com.sap.ndb.studio.jdbc.JDBCPlugin.createConnection(JDBCPlugin.java:236)
         ... 5 more
    !ENTRY com.sap.ndb.studio.jdbc 4 4 2014-06-24 00:26:07.869
    !MESSAGE Connection on HDB:SKVK.VM.CLD.SR:00:SYSTEM is forced to close. (csns.backup.BackupConnectionHandler$1.call(BackupConnectionHandler.java:116);csns.backup.BackupConnectionHandler$1.call(BackupConnectionHandler.java:1);)
    !ENTRY com.sap.ndb.studio.jdbc 4 4 2014-06-24 00:26:07.871
    !MESSAGE Connection on HDB:SKVK.VM.CLD.SR:00:SYSTEM is forced to close. (csns.catalog.internal.Catalog.isHasPrivilegesForSchemasAvailable(Catalog.java:143);csns.catalog.internal.Catalog.fetchCatalogObjects(Catalog.java:73);csns.catalog.internal.CatalogFolder.fetchChildren(CatalogFolder.java:175);csns.catalog.CatalogWorkbenchAdapter$1.run(CatalogWorkbenchAdapter.java:98);org.eclipse.core.internal.jobs.Worker.run(Worker.java:53);)
    !ENTRY com.sap.ndb.studio.jdbc 4 4 2014-06-24 00:26:07.873
    !MESSAGE Connection on HDB:SKVK.VM.CLD.SR:00:SYSTEM is forced to close. (csns.catalog.command.handlers.CatalogRefresh.execute(CatalogRefresh.java:36);org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:290);org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90);org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56);org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:243);org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:224);org.eclipse.e4.core.contexts.Context)
    !ENTRY com.sap.ndb.studio.jdbc 4 4 2014-06-24 00:26:07.875
    !MESSAGE Connection on HDB:SKVK.VM.CLD.SR:00:SYSTEM is forced to close. (csns.catalog.internal.Catalog.isHasPrivilegesForSchemasAvailable(Catalog.java:143);csns.catalog.internal.Catalog.fetchCatalogObjects(Catalog.java:73);csns.catalog.internal.CatalogFolder.fetchChildren(CatalogFolder.java:175);csns.catalog.CatalogWorkbenchAdapter$1.run(CatalogWorkbenchAdapter.java:98);org.eclipse.core.internal.jobs.Worker.run(Worker.java:53);)
    !ENTRY com.sap.ndb.studio.jdbc 4 4 2014-06-24 00:26:07.894
    !MESSAGE Connection on HDB:SKVK.VM.CLD.SR:00:SYSTEM is forced to close. (csns.modeler.base.NavigatorRepositoryInput.getConnection(NavigatorRepositoryInput.java:28);csns.sdk.repository.provider.newdbrepository.NewDBRepositoryProxyFactory.getRepositoryProxy(NewDBRepositoryProxyFactory.java:21);csns.sdk.repository.provider.newdbrepository.impl.NewDBRepositoryProvider.getProxy(NewDBRepositoryProvider.java:197);csns.sdk.repository.provider.newdbrepository.impl.NewDBRepositoryProvider.checkRepositoryAccessAuthorization(NewDBRepositoryProvider.java:214);csns.sdk.repository.newdbreposi)
    !ENTRY com.sap.ndb.studio.jdbc 4 4 2014-06-24 00:26:07.896
    !MESSAGE Connection on HDB:SKVK.VM.CLD.SR:00:SYSTEM is forced to close. (csns.catalog.internal.Catalog.isHasPrivilegesForSchemasAvailable(Catalog.java:143);csns.catalog.internal.Catalog.fetchCatalogObjects(Catalog.java:73);csns.catalog.internal.CatalogFolder.fetchChildren(CatalogFolder.java:175);csns.catalog.CatalogWorkbenchAdapter$1.run(CatalogWorkbenchAdapter.java:98);org.eclipse.core.internal.jobs.Worker.run(Worker.java:53);)
    !ENTRY com.sap.ndb.studio.jdbc 4 4 2014-06-24 00:26:07.899
    !MESSAGE Connection on HDB:SKVK.VM.CLD.SR:00:SYSTEM is forced to close. (csns.catalog.internal.Catalog.isHasPrivilegesForSchemasAvailable(Catalog.java:143);csns.catalog.internal.Catalog.fetchCatalogObjects(Catalog.java:73);csns.catalog.internal.CatalogFolder.fetchChildren(CatalogFolder.java:175);csns.catalog.CatalogWorkbenchAdapter$1.run(CatalogWorkbenchAdapter.java:98);org.eclipse.core.internal.jobs.Worker.run(Worker.java:53);)
    !ENTRY com.sap.ndb.studio.jdbc 4 4 2014-06-24 00:26:07.901
    !MESSAGE Connection on HDB:SKVK.VM.CLD.SR:00:SYSTEM is forced to close. (csns.navigator.operations.SAPSystemObjectUpdate.executeTryJDBC(SAPSystemObjectUpdate.java:268);csns.navigator.operations.SAPSystemObjectUpdate.execute(SAPSystemObjectUpdate.java:96);csns.navigator.operations.UpdateSAPSystemOperation.execute(UpdateSAPSystemOperation.java:73);csns.datamodel.controler.DataModelOperation.execute(DataModelOperation.java:70);csns.datamodel.controler.DataModelOperationQueue$DataModelOperationThread.run(DataModelOperationQueue.java:99);)
    !ENTRY com.sap.ndb.studio.backup 4 4 2014-06-24 00:27:01.078
    !MESSAGE Could not open connection to 'HDB skvk.vm.cld.sr 00'
    !STACK 0
    java.util.concurrent.TimeoutException
         at java.util.concurrent.FutureTask.get(Unknown Source)
         at com.sap.ndb.studio.backup.BackupConnectionHandler.openConnection(BackupConnectionHandler.java:122)
         at com.sap.ndb.studio.backup.BackupConnectionHandler.getConnection(BackupConnectionHandler.java:88)
         at com.sap.ndb.studio.backup.BackupWorkbenchAdapter$2.call(BackupWorkbenchAdapter.java:151)
         at com.sap.ndb.studio.backup.BackupWorkbenchAdapter$2.call(BackupWorkbenchAdapter.java:1)
         at java.util.concurrent.FutureTask.run(Unknown Source)
         at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
         at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
         at java.lang.Thread.run(Unknown Source)
    !ENTRY com.sap.ndb.studio.navigator 4 1 2014-06-24 00:27:31.615
    !MESSAGE HDB skvk.vm.cld.sr 00 (SYSTEM) Error while refreshing system
    !SUBENTRY 1 com.sap.ndb.studio.navigator 4 0 2014-06-24 00:27:31.615
    !MESSAGE SAPControl request failed
    !STACK 0
    com.sap.ndb.studio.sapcontrol.SAPControlException: SAPControl request failed
         at com.sap.ndb.studio.sapcontrol.operations.SAPControlOperation.execute(SAPControlOperation.java:118)
         at com.sap.ndb.studio.sapcontrol.SAPControl.getInstanceProperties(SAPControl.java:507)
         at com.sap.ndb.studio.navigator.operations.SAPSystemObjectUpdate.executeTrySAPControl(SAPSystemObjectUpdate.java:147)
         at com.sap.ndb.studio.navigator.operations.SAPSystemObjectUpdate.execute(SAPSystemObjectUpdate.java:79)
         at com.sap.ndb.studio.navigator.operations.UpdateSAPSystemOperation.execute(UpdateSAPSystemOperation.java:73)
         at com.sap.ndb.studio.datamodel.controler.DataModelOperation.execute(DataModelOperation.java:70)
         at com.sap.ndb.studio.datamodel.controler.DataModelOperationQueue$DataModelOperationThread.run(DataModelOperationQueue.java:99)
    Caused by: com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl: com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl: Message send failed
         at com.sun.xml.internal.messaging.saaj.client.p2p.HttpSOAPConnection.call(Unknown Source)
         at com.sap.ndb.studio.sapcontrol.operations.SAPControlOperation.execute(SAPControlOperation.java:94)
         ... 6 more
    Caused by: com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl: Message send failed
         at com.sun.xml.internal.messaging.saaj.client.p2p.HttpSOAPConnection.post(Unknown Source)
         ... 8 more
    Caused by: java.net.SocketException: Connection reset
         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
         at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
         at java.lang.reflect.Constructor.newInstance(Unknown Source)
         at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)
         at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)
         at java.security.AccessController.doPrivileged(Native Method)
         at sun.net.www.protocol.http.HttpURLConnection.getChainedException(Unknown Source)
         at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
         at java.net.HttpURLConnection.getResponseCode(Unknown Source)
         ... 9 more
    Caused by: java.net.SocketException: Connection reset
         at java.net.SocketInputStream.read(Unknown Source)
         at java.net.SocketInputStream.read(Unknown Source)
         at java.io.BufferedInputStream.fill(Unknown Source)
         at java.io.BufferedInputStream.read1(Unknown Source)
         at java.io.BufferedInputStream.read(Unknown Source)
         at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
         at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
         at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
         ... 11 more
    !SUBENTRY 1 com.sap.ndb.studio.navigator 4 4 2014-06-24 00:27:31.616
    !MESSAGE Database connection is not available. See error log for details.
    !STACK 0
    com.sap.ndb.studio.jdbc.JDBCConnectionStatus: Database connection is not available. See error log for details.
         at com.sap.ndb.studio.jdbc.JDBCPlugin.createConnection(JDBCPlugin.java:253)
         at com.sap.ndb.studio.navigator.operations.SAPSystemObjectUpdate.executeTryJDBC(SAPSystemObjectUpdate.java:268)
         at com.sap.ndb.studio.navigator.operations.SAPSystemObjectUpdate.execute(SAPSystemObjectUpdate.java:96)
         at com.sap.ndb.studio.navigator.operations.UpdateSAPSystemOperation.execute(UpdateSAPSystemOperation.java:73)
         at com.sap.ndb.studio.datamodel.controler.DataModelOperation.execute(DataModelOperation.java:70)
         at com.sap.ndb.studio.datamodel.controler.DataModelOperationQueue$DataModelOperationThread.run(DataModelOperationQueue.java:99)
    Caused by: com.sap.db.jdbc.exceptions.jdbc40.SQLNonTransientConnectionException: Data receive failed .
         at com.sap.db.jdbc.exceptions.jdbc40.SQLNonTransientConnectionException.createException(SQLNonTransientConnectionException.java:40)
         at com.sap.db.jdbc.exceptions.SQLExceptionSapDB.createException(SQLExceptionSapDB.java:241)
         at com.sap.db.jdbc.exceptions.SQLExceptionSapDB.createException(SQLExceptionSapDB.java:203)
         at com.sap.db.jdbc.exceptions.SQLExceptionSapDB.generateSQLException(SQLExceptionSapDB.java:155)
         at com.sap.db.jdbc.exceptions.ConnectionException.createException(ConnectionException.java:22)
         at com.sap.db.jdbc.ConnectionSapDB.tryReconnect(ConnectionSapDB.java:1631)
         at com.sap.db.jdbc.ConnectionSapDB.execute(ConnectionSapDB.java:1131)
         at com.sap.db.jdbc.CallableStatementSapDB.sendCommand(CallableStatementSapDB.java:1964)
         at com.sap.db.jdbc.StatementSapDB.sendSQL(StatementSapDB.java:978)
         at com.sap.db.jdbc.CallableStatementSapDB.doParse(CallableStatementSapDB.java:256)
         at com.sap.db.jdbc.CallableStatementSapDB.constructor(CallableStatementSapDB.java:215)
         at com.sap.db.jdbc.CallableStatementSapDB.(CallableStatementSapDBFinalize.java:31)
         at com.sap.db.jdbc.ConnectionSapDB.prepareStatement(ConnectionSapDB.java:1369)
         at com.sap.db.jdbc.trace.log.Connection.prepareStatement(Connection.java:1025)
         at com.sap.db.jdbc.trace.Connection.prepareStatement(Connection.java:413)
         at com.sap.ndb.studio.jdbc.JDBCConnection.initialize(JDBCConnection.java:235)
         at com.sap.ndb.studio.jdbc.JDBCPlugin.createConnection(JDBCPlugin.java:236)
         ... 5 more
    !ENTRY com.sap.ndb.studio.jdbc 4 4 2014-06-24 00:38:11.748
    !MESSAGE Connection on HDB:SKVK.VM.CLD.SR:00:SYSTEM is forced to close. (csns.navigator.commands.OpenSAPSystemHandler$1$1.call(OpenSAPSystemHandler.java:238);csns.navigator.commands.OpenSAPSystemHandler$1$1.call(OpenSAPSystemHandler.java:1);)
    !ENTRY com.sap.ndb.studio.jdbc 4 4 2014-06-24 00:38:11.749
    !MESSAGE Connection on HDB:SKVK.VM.CLD.SR:00:SYSTEM is forced to close. (csns.backup.BackupConnectionHandler$1.call(BackupConnectionHandler.java:116);csns.backup.BackupConnectionHandler$1.call(BackupConnectionHandler.java:1);)
    !ENTRY com.sap.ndb.studio.jdbc 4 4 2014-06-24 00:38:11.750
    !MESSAGE Connection on HDB:SKVK.VM.CLD.SR:00:SYSTEM is forced to close. (csns.navigator.operations.SAPSystemObjectUpdate.executeTryJDBC(SAPSystemObjectUpdate.java:268);csns.navigator.operations.SAPSystemObjectUpdate.execute(SAPSystemObjectUpdate.java:96);csns.navigator.operations.UpdateSAPSystemOperation.execute(UpdateSAPSystemOperation.java:73);csns.datamodel.controler.DataModelOperation.execute(DataModelOperation.java:70);csns.datamodel.controler.DataModelOperationQueue$DataModelOperationThread.run(DataModelOperationQueue.java:99);)
    !ENTRY com.sap.ndb.studio.jdbc 4 4 2014-06-24 00:38:15.378
    !MESSAGE Connection on HDB:BRSL.VM.CLD.SR:00:SYSTEM is forced to close. (csns.backup.BackupConnectionHandler$1.call(BackupConnectionHandler.java:116);csns.backup.BackupConnectionHandler$1.call(BackupConnectionHandler.java:1);)
    !ENTRY com.sap.ndb.studio.jdbc 4 4 2014-06-24 00:38:15.384
    !MESSAGE Connection on HDB:BRSL.VM.CLD.SR:00:SYSTEM is forced to close. (csns.navigator.operations.SAPSystemObjectUpdate.executeTryJDBC(SAPSystemObjectUpdate.java:268);csns.navigator.operations.SAPSystemObjectUpdate.execute(SAPSystemObjectUpdate.java:96);csns.navigator.operations.UpdateSAPSystemOperation.execute(UpdateSAPSystemOperation.java:73);csns.datamodel.controler.DataModelOperationJob.run(DataModelOperationJob.java:70);org.eclipse.core.internal.jobs.Worker.run(Worker.java:53);)
    !ENTRY com.sap.ndb.studio.backup 4 4 2014-06-24 00:39:08.472
    !MESSAGE Could not open connection to 'HDB skvk.vm.cld.sr 00'
    !STACK 0
    java.util.concurrent.TimeoutException
         at java.util.concurrent.FutureTask.get(Unknown Source)
         at com.sap.ndb.studio.backup.BackupConnectionHandler.openConnection(BackupConnectionHandler.java:122)
         at com.sap.ndb.studio.backup.BackupConnectionHandler.getConnection(BackupConnectionHandler.java:88)
         at com.sap.ndb.studio.backup.BackupWorkbenchAdapter$2.call(BackupWorkbenchAdapter.java:151)
         at com.sap.ndb.studio.backup.BackupWorkbenchAdapter$2.call(BackupWorkbenchAdapter.java:1)
         at java.util.concurrent.FutureTask.run(Unknown Source)
         at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
         at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
         at java.lang.Thread.run(Unknown Source)
    !ENTRY com.sap.ndb.studio.navigator 4 1 2014-06-24 00:39:38.422
    !MESSAGE HDB skvk.vm.cld.sr 00 (SYSTEM) Error while refreshing system
    !SUBENTRY 1 com.sap.ndb.studio.navigator 4 0 2014-06-24 00:39:38.422
    !MESSAGE SAPControl request failed
    !STACK 0
    com.sap.ndb.studio.sapcontrol.SAPControlException: SAPControl request failed
         at com.sap.ndb.studio.sapcontrol.operations.SAPControlOperation.execute(SAPControlOperation.java:118)
         at com.sap.ndb.studio.sapcontrol.SAPControl.getInstanceProperties(SAPControl.java:507)
         at com.sap.ndb.studio.navigator.operations.SAPSystemObjectUpdate.executeTrySAPControl(SAPSystemObjectUpdate.java:147)
         at com.sap.ndb.studio.navigator.operations.SAPSystemObjectUpdate.execute(SAPSystemObjectUpdate.java:79)
         at com.sap.ndb.studio.navigator.operations.UpdateSAPSystemOperation.execute(UpdateSAPSystemOperation.java:73)
         at com.sap.ndb.studio.datamodel.controler.DataModelOperation.execute(DataModelOperation.java:70)
         at com.sap.ndb.studio.datamodel.controler.DataModelOperationQueue$DataModelOperationThread.run(DataModelOperationQueue.java:99)
    Caused by: com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl: com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl: Message send failed
         at com.sun.xml.internal.messaging.saaj.client.p2p.HttpSOAPConnection.call(Unknown Source)
         at com.sap.ndb.studio.sapcontrol.operations.SAPControlOperation.execute(SAPControlOperation.java:94)
         ... 6 more
    Caused by: com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl: Message send failed
         at com.sun.xml.internal.messaging.saaj.client.p2p.HttpSOAPConnection.post(Unknown Source)
         ... 8 more
    Caused by: java.net.SocketException: Connection reset
         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
         at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
         at java.lang.reflect.Constructor.newInstance(Unknown Source)
         at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)
         at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)
         at java.security.AccessController.doPrivileged(Native Method)
         at sun.net.www.protocol.http.HttpURLConnection.getChainedException(Unknown Source)
         at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
         at java.net.HttpURLConnection.getResponseCode(Unknown Source)
         ... 9 more
    Caused by: java.net.SocketException: Connection reset
         at java.net.SocketInputStream.read(Unknown Source)
         at java.net.SocketInputStream.read(Unknown Source)
         at java.io.BufferedInputStream.fill(Unknown Source)
         at java.io.BufferedInputStream.read1(Unknown Source)
         at java.io.BufferedInputStream.read(Unknown Source)
         at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
         at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
         at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
         ... 11 more
    !SUBENTRY 1 com.sap.ndb.studio.navigator 4 4 2014-06-24 00:39:38.422
    !MESSAGE Database connection is not available. See error log for details.
    !STACK 0
    com.sap.ndb.studio.jdbc.JDBCConnectionStatus: Database connection is not available. See error log for details.
         at com.sap.ndb.studio.jdbc.JDBCPlugin.createConnection(JDBCPlugin.java:253)
         at com.sap.ndb.studio.navigator.operations.SAPSystemObjectUpdate.executeTryJDBC(SAPSystemObjectUpdate.java:268)
         at com.sap.ndb.studio.navigator.operations.SAPSystemObjectUpdate.execute(SAPSystemObjectUpdate.java:96)
         at com.sap.ndb.studio.navigator.operations.UpdateSAPSystemOperation.execute(UpdateSAPSystemOperation.java:73)
         at com.sap.ndb.studio.datamodel.controler.DataModelOperation.execute(DataModelOperation.java:70)
         at com.sap.ndb.studio.datamodel.controler.DataModelOperationQueue$DataModelOperationThread.run(DataModelOperationQueue.java:99)
    Caused by: com.sap.db.jdbc.exceptions.jdbc40.SQLNonTransientConnectionException: Data receive failed .
         at com.sap.db.jdbc.exceptions.jdbc40.SQLNonTransientConnectionException.createException(SQLNonTransientConnectionException.java:40)
         at com.sap.db.jdbc.exceptions.SQLExceptionSapDB.createException(SQLExceptionSapDB.java:241)
         at com.sap.db.jdbc.exceptions.SQLExceptionSapDB.createException(SQLExceptionSapDB.java:203)
         at com.sap.db.jdbc.exceptions.SQLExceptionSapDB.generateSQLException(SQLExceptionSapDB.java:155)
         at com.sap.db.jdbc.exceptions.ConnectionException.createException(ConnectionException.java:22)
         at com.sap.db.jdbc.ConnectionSapDB.tryReconnect(ConnectionSapDB.java:1631)
         at com.sap.db.jdbc.ConnectionSapDB.execute(ConnectionSapDB.java:1131)
         at com.sap.db.jdbc.CallableStatementSapDB.sendCommand(CallableStatementSapDB.java:1964)
         at com.sap.db.jdbc.StatementSapDB.sendSQL(StatementSapDB.java:978)
         at com.sap.db.jdbc.CallableStatementSapDB.doParse(CallableStatementSapDB.java:256)
         at com.sap.db.jdbc.CallableStatementSapDB.constructor(CallableStatementSapDB.java:215)
         at com.sap.db.jdbc.CallableStatementSapDB.(CallableStatementSapDBFinalize.java:31)
         at com.sap.db.jdbc.ConnectionSapDB.prepareStatement(ConnectionSapDB.java:1369)
         at com.sap.db.jdbc.trace.log.Connection.prepareStatement(Connection.java:1025)
         at com.sap.db.jdbc.trace.Connection.prepareStatement(Connection.java:413)
         at com.sap.ndb.studio.jdbc.JDBCConnection.initialize(JDBCConnection.java:235)
         at com.sap.ndb.studio.jdbc.JDBCPlugin.createConnection(JDBCPlugin.java:236)
         ... 5 more

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