Why does my NFS share hang during data transfers? The TIBCO application then prints the error message: 'Unable to open store file ... file may be locked'

Issue

• Periodically, the NFS share becomes hung and the following error messages appear in the TIBCO application logs:

2013-06-30 03:21:15.014 ERROR: Unable to open store file '/opt/tibco/data/cfg/COMM_
 26884/datastore/async-msgs.db', file may be locked.
 2013-06-30 03:21:15.014 ERROR: Unable to open store file '/opt/tibco/data/cfg/COMM_26884/datastore/async-msgs.db', file may be locked.
 2013-06-30 03:21:15.015 ERROR: Unable to open store file '/opt/tibco/data/cfg/COMM_26884/datastore/meta.db', file may be locked.