Unable to load XSD from the MDS

Question

Hi,
We are undergoing this problem for the last 2 weeks. We are working with BPEL processes which refer the schema from MDS. Everything is working fine in dev which is a single server, but as soon as we moved the code to a clustered test environment, the interfaces are failing to load the XSDs often and they are working only intermittently. When they fail, we receive the following error:
+<fault>+
+<bpelFault>+
+<faultType>0</faultType>+
+<bindingFault>+
+<part name="summary">+
+<summary>Exception occured when binding was invoked. Exception occured during invocation of JCA binding: "JCA Binding execute of Reference operation 'Put' failed due to: Exception occured when binding was invoked. Exception occured during invocation of JCA binding: "Could not instantiate InteractionSpec oracle.tip.adapter.ftp.outbound.FTPInteractionSpec due to: XSD Resolution problem. XSD Resolution problem. Unable to load Translation schemas from for -Namespace- due to: Unable to lookup schema for '-Namespace- ' Please make sure all used XML schemas are imported/included correctly. ". The invoked JCA adapter raised a resource exception. Please examine the above error message carefully to determine a resolution. ". The invoked JCA adapter raised a resource exception. Please examine the above error message carefully to determine a resolution. </summary>+
+</part>+
+<part name="detail">+
+<detail>Connection reset</detail>+
+</part>+
+<part name="code">+
+<code>null</code>+
+</part>+
+</bindingFault>+
+</bpelFault>+
+</fault>+
The server logs are shown:
+<May 2, 2013 9:18:32 AM GMT+00:00> <Error> <oracle.soa.adapter> <BEA-000000> <JCABinding=> InterfaceName:AdapterName [ Write_ptt::Write(body) ] Could not invoke operation 'Write' against the 'File Adapter' due to:+
BINDING.JCA-12563
Exception occured when binding was invoked.
Exception occured during invocation of JCA binding: "Could not instantiate InteractionSpec oracle.tip.adapter.file.outbound.FileInteractionSpec due to: XSD Resolution problem.
XSD Resolution problem.
Unable to load Translation schemas from  for -Namespace- due to: Unable to lookup schema for '-Namespace-'
Please make sure all used XML schemas are imported/included correctly.
+".+
+The invoked JCA adapter raised a resource exception.+
+Please examine the above error message carefully to determine a resolution.+
+>+
+<May 2, 2013 9:18:32 AM GMT+00:00> <Error> <oracle.soa.adapter> <BEA-000000> <JCABinding=> [default/InterfaceName!3.0*soa_7aa1ce63-47ca-49af-a447-b231b8cde31c.AdapterName]:Write One-way operation Write() failed>+
+<May 2, 2013 9:18:32 AM GMT+00:00> <Error> <oracle.soa.bpel.engine.ws> <BEA-000000> <got FabricInvocationException+
+java.net.SocketException: Connection reset+
+at java.net.SocketInputStream.read(SocketInputStream.java:168)+
+at weblogic.utils.io.ChunkedInputStream.read(ChunkedInputStream.java:159)+
+at java.io.InputStream.read(InputStream.java:82)+
+at com.certicom.tls.record.ReadHandler.readFragment(Unknown Source)+
+at com.certicom.tls.record.ReadHandler.readRecord(Unknown Source)+
+...+
We have never had this problem till moving to the clustered environment and all the XSDs in the MDS are configured properly to our knowledge. Any helpful pointers to the problem are very much appreciated.
Regards,
vu2jerry
Edited by: 989720 on May 2, 2013 4:57 AM

Answer 1

We have a sev-1 SR raised with Oracle and the issue hasn't been found yet. I had no idea it was a known issue as I couldn't find anything related to these on the web.
By the way it isn't a problem with the File and FTP adapters alone. Even the validate activity is failing to load the XSDs more often than not with the same error. Has anyone else faced the same issue?
Regards,
vu2jerry