A WebmasterWorld thread reports that when you are logged in to the Yahoo! Search Marketing advertisers interface, you get server side errors such as;
Can't insert page '/acctStatus.do' : EJB Exception: ; nested exception is: javax.ejb.EJBException: nested exception is: weblogic.jdbc.extensions.ConnectionDeadSQLException: weblogic.common.resourcepool.ResourceDeadException: 0:Could not create pool connection. The DBMS driver exception was: Io exception: Connection refused(DESCRIPTION=(TMP=)(VSNNUM
I have confirmed this to still be an issue 25+ hours after first reported at WebmasterWorld.
Later yesterday, advertisers were unable to login to the system and after being able to login they received this message;
We are aware of current difficulties in adding, modifying or deleting listings and are working to correct the problem. Please check back for updates.
The server side error is still there but I don't think it makes an impact on anything (but I don't know for sure).
Forum discussion at WebmasterWorld.