I am getting the Exception “Java.IO.EOFException” while opening a session to IS using Designer & Developer.

Could you please answer me how to get rid of this problem.

Thanks in advance.

It is not possible to answer your question correctly using only the information you provided.

When did this problem start? What is the network connection like between the box running Designer/Developer and the IS server? Are there any firewalls or proxy servers that are between the client workstation and IS?
What information is included, if any, when you click the details button?


I have the same issue, it started today. The only change I am aware of is that we applied core fix 2 to WM 8.2.2. The full stack from developer is:
at com.wm.util.coder.IDataBinCoder.readString(
at com.wm.util.coder.IDataBinCoder._decode(
at com.wm.util.coder.IDataBinCoder._decode(
at com.wm.util.coder.IDataBinCoder._decode(
at com.wm.util.coder.IDataBinCoder._decode(
at com.wm.util.coder.IDataBinCoder.decode(
at com.wm.driver.comm.b2b.http.SessionHTTPLink.transportMsg(
at com.wm.driver.comm.b2b.http.HTTPLink$

Everything on the IS side seems fine: I can connect to the admin console, there is nothing standing out in any of the IS logs to me (error, server, stdout, etc). It is not affecting the second node in the cluster (I can log in there with the same user/password combination that fails). On the bad server, neither local nor LDAP based users are able to connect.

My IS is on AIX and I found this thread on the tech forums:

I downloaded the utility attached to the and I do eventually get the java.lang.ArrayIndexOutOfBoundsException like they mentioned.

For now, I’ve just recycled the IS server as we are migrating our IS servers off AIX. If we get these chronically, I will look at disabling the JIT compiler to tide me over until we migrate.

IS this error happens when you tried login Developer8.2.2 session?


Yes, when you try to log into the IS from developer/designer. After turning off JIT we have not had any issues.

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