Deployment trouble using OEPE to deploy to the OSB ( _binary/SessionData/singleton (No such file or directory) )

When you use OEPE to deploy to the OSB, you might run into this problem during deployment:

.FileNotFoundException: /oraclesoa/Middleware/user_projects/domains/MY_DOMAIN/osb/config/sessions/ALSB_IDE_Internal_PublishOp_1313998-1275/_binary/SessionData/singleton (No such file or directory)

This problem occurs when your session is invalid or been corrupted. You can fix this by going to MY_ORACLE_HOME/user_projects/domains/MY_DOMAIN/osb/config/sessions/ and remove or rename the directory involved. After this, restart your managed server and the problem should have been fixed.

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