System.Data.SqlClient.SqlException Message Upon Opening Application

Technote (troubleshooting)


System.Data.SqlClient.SqlException is received
when opening LogicNet Plus.


Application unable to start with this error message.


AppDB database file is corrupted.

Diagnosing the problem

Attached error is received when opening LogicNet Plus.

Resolving the problem

Close LogicNet Plus if it is open, and stop SQL Server:

  1. Go to Start > All Programs > Microsoft SQL Server 2008 > Configuration Tools > SQL Server Configuration Manager (exact path may vary slightly depending on version of SQL Server installed
  2. Select SQL Server Services in the panel on the left side
  3. Right-click on SQL Server(ILOGSCAPP2008) and select Stop

Delete AppDB files
  1. Go to C:\Users\YOUR_USER_NAME\AppData\Local\IBM\ILOG LogicNet Plus\7.2 (replace "YOUR_USER_NAME with the account name you use to log into Windows)
  2. Delete all files in the folder

Reboot your computer

Please contact IBM Technical Support if the above steps do not resolve this issue.

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Document information

More support for:

IBM ILOG LogicNet Plus XE

Software version:


Operating system(s):


Reference #:


Modified date:


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