If the database is installed on your local network:
 
Log out/in to re-establish the connection:
  1. Have affected user exit/sign out of The Raiser's Edge.
  2. If using a User Account Control (UAC) enabled operating system, (Windows Vista, Windows 7, Windows 8, Server 2008, Server 2008 R2, etc.) right-click on the The Raiser's Edge icon and choose the "Run as Administrator" option.
  3. Return to Config > General Ledger to see if options below Establish connection and enable options link are present. If present, then the link has been re-established. 
OR

Ensure that it is The Financial Edge database entered in to the Database name field and not The Raiser's Edge database:
  1. Go to Configuration
  2. Select General Ledger
  3. Ensure the Financial Edge SQL server entered is correct. (double-check spelling)
  4. Place cursor in Database name field and type in correct database name. (double-check spelling)
  5. Click Establish connection and enable options
     
If the above steps do not resolve,turn off the integration of The Financial Edge and The Raiser's Edge then re-establish the connection between RE and FE.  

If the database is hosted by Blackbaud Hosting Services:
  1. Ensure the user account is a member of both the Raiser's Edge and the Financial Edge groups in User Administration for the Blackbaud Hosting Services portal.
  2. Have affected users exit/sign out of The Raiser's Edge and log back in.
  3. Return to Config > General Ledger to see if options below Establish connection and enable options link are present. If present, then the link has been re-established.