Missing layers in service (and in app)

[JohnLocke1]

Hi!

I have a problem that I cannot solve. Some days ago my layers disappeared from my map service. Only I see the group layers in the rest. See below:

Afternoon, it has worked, next morning, when I arrived to the job, the layers are gone. In ArcGIS Manager there were some logs at 00:36 for each layer:

"The Layer:'aabbcc' in Map:'map' is invalid. The base table definition string "%aabbcc" is invalid. Failure to access the DBMS server."

I cannot connect to the database in the ArcMap as well...

What can the problem be?? I restarted the SQL Server, the ArcGIS Server, the service, clear the rest cache, etc. No solution yet. Has anybody any opinion, how to solve this problem?

Thanks!

[VictorTey]

can you manually log into the database using the same credentials as your sde connection file?