[OLE DB Source [28]] Error: SSIS Error Code DTS_E_CANNOTACQUIRECONNECTIONFROMCONNECTIONMANAGER. The AcquireConnection method call to the connection manager "Source" failed with error code 0xC0202009.

I have several SSIS Packages I have created in BIDS which I have been running manually just fine for the past few months. These packages connect to an Oracle database.

However, this week when I try to run them, I get the following error message: [OLE DB Source [28]] Error: SSIS Error Code DTS_E_CANNOTACQUIRECONNECTIONFROMCONNECTIONMANAGER.  The AcquireConnection method call to the connection manager "Source" failed with error code 0xC0202009.

I have tried creating a new package to test the configuration of the connection in the Connection Manager. When I create a new Data Task Flow and add an OLE DB Source, I am able to Parse Query and Preview just fine.

However when I try to Exicute Task or Start Debugging, I get the same error message as above.

I dont have any problems with my SQL Tasks.