The Database administrator should check to see if there is a query in SQL server that is blocking the Harvest DB. The workaround is to kill the query. After this all users are ok to resume, EXCEPT the user that attempted to merge that can not continue working.
Next, check the package status , if status is locked unlock it using the Harvest command line utility hpkgunlk.exe. The syntax of the unlock package is provided below:
hpkgunlk -b <Broker Name > -usr <user name > -pw < password> -en <project name>
Be sure to check the "hpkgunlk.log" file after the command to confirm that it was successful.
If package is not blocked, check Oracle "blocking event" and report it to CA support.