Error: 17883, Severity: 1, State: 0 The Scheduler 0 appears to be hung. SPID 7, ECID 0, UMS Context 0x045530B8. I have encountered this error on one of the servers.We do have a SAN and SQL Server is on SP3. I know that this is a problem and applying the SP4 should fix the problem. I wanted to know if there is an intermi workaround which will keep my SQL Server running. I tried restarting SQL Server Agnet but that does not help. Agent does not start nor users are able to connect to SQL Server. My next option is try restarting the SQL Server service. What if it refuses to start. I havenot applied SP4 before. Will I be able to apply sp4 without SQL Server engines running? Please let me know if there are anu interim fixes with which I can keep m server riunning till the end of the day after which I can apply SP4.