java.lang.Error: Critical Error. Failed to write transaction file /osb/configfwk/core_wls_osb1/_xact_ctrl.ih

Sometimes when you deployed the osb project using /sbconsole you will get the following exception while activating the project i.e.

Cause: 

The possible reason for this exception is the disk is full

Solution:

Check the disk space using the follwoing command

df -h

if the disk is full, then empty the space by deleting the logs file.