After upgrading from 6.7.x to 7.2, the following warning message is logged in JMS log files: com.documentum.fc.common.DfNewInterprocessLockImpl – [DFC_FILE_LOCK_ACQUIRE_WARN] Failed to acquire lock proceeding ahead with no lock java.nio.channels.OverlappingFileLockException at sun.nio.ch.SharedFileLockTable.checkList FileLockTable.java:255) By default ACS and ServerApp dfc.properties are pointing(…)