Hello,
We have, clustered SQL server 2012 (11.0.6518.0 - SP3 + CU1). It has 2 nodes. Recently cluster has begun hanging up for 1 minute. This is critical to our business application. There is no any suspicious records in Application or System logs. Also MS SQL itself does not have any alerts. We've disabled failover for this resource, cause we thought it is cluster malfunction, but it did not help.
Any suggestions?
Cluster logs:
00002064.000023e4::2016/03/14-13:31:01.649 INFO [RES] Network Name: Agent: Sending request Netname/RecheckConfig to NN:f50684d8-cf67-4354-a024-9f3676c9f40f:Netbios
00002064.000023e4::2016/03/14-13:31:01.688 INFO [RES] Network Name: Agent: Sending request Netname/RecheckConfig to NN:510e4d82-fe8b-43b0-ad3c-b3c6e1a44a18:Netbios
00002064.000023e4::2016/03/14-13:31:01.691 INFO [RES] Network Name: Agent: Sending request Netname/RecheckConfig to NN:510e4d82-fe8b-43b0-ad3c-b3c6e1a44a18:Netbios
00001e48.000081c0::2016/03/14-13:31:03.672 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] SQLMoreResults() returns -1 with following information
00001e48.000081c0::2016/03/14-13:31:03.672 ERR [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] ODBC Error: [HYT00] [Microsoft][SQL Server Native Client 11.0]Query timeout expired (0)
00001e48.000081c0::2016/03/14-13:31:03.672 ERR [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] ODBC Error: [01000] [Microsoft][SQL Server Native Client 11.0][SQL Server] (0)
00001e48.000081c0::2016/03/14-13:31:03.672 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] No more diagnostics results
00001e48.000081c0::2016/03/14-13:31:03.672 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] Discard the pending result sets
00001e48.000081c0::2016/03/14-13:31:03.672 ERR [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] ODBC Error: [24000] [Microsoft][SQL Server Native Client 11.0]Invalid cursor state (0)
00001e48.000081c0::2016/03/14-13:31:03.672 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] Diagnostics is stopped
00001e48.000072d0::2016/03/14-13:31:03.672 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] Online worker helper is stopped
00001e48.000081c0::2016/03/14-13:31:03.673 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] Cancel SQL request
00001e48.000081c0::2016/03/14-13:31:03.673 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] Free SQL statement
00001e48.000081c0::2016/03/14-13:31:03.673 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] Disconnect from SQL Server
00002064.000023e4::2016/03/14-13:31:03.803 INFO [RES] Network Name: Agent: Sending request Netname/RecheckConfig to NN:efae3259-7e02-4550-988b-079e036e0485:Netbios
00001e48.000081c0::2016/03/14-13:31:04.684 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] Connection string is 'Driver={SQL Server Native Client 11.0};Database=master;Server=cluster_address\INSTANCE_NAME;Trusted_Connection=yes'
00001e48.000081c0::2016/03/14-13:31:04.684 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] SQL_ATTR_LOGIN_TIMEOUT (30s) SQL_ATTR_CONNECTION_TIMEOUT (30s) SQL_ATTR_QUERY_TIMEOUT (30s)
00001e48.000081c0::2016/03/14-13:31:04.685 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] Connect to SQL Server ...
00001e48.000081c0::2016/03/14-13:31:04.725 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] The connection was established successfully
00001e48.000081c0::2016/03/14-13:31:04.725 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] Run 'EXEC sp_server_diagnostics 20'
00001e48.000081c0::2016/03/14-13:31:04.893 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] Set query timeout to 60
00001e48.000081c0::2016/03/14-13:31:04.893 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] Diagnostics is started
00001e48.000081c0::2016/03/14-13:31:04.893 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] SQL Server component 'system' health state has been changed from '' to 'clean' at 2016-03-14 16:31:04.887
00001e48.00009960::2016/03/14-13:31:04.893 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] Online worker helper is started
00001e48.000081c0::2016/03/14-13:31:04.913 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] SQL Server component 'resource' health state has been changed from '' to 'clean' at 2016-03-14 16:31:04.887
00001e48.000081c0::2016/03/14-13:31:04.923 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] SQL Server component 'query_processing' health state has been changed from '' to 'warning' at 2016-03-14 16:31:04.887
00001e48.000081c0::2016/03/14-13:31:04.923 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] SQL Server component 'io_subsystem' health state has been changed from '' to 'clean' at 2016-03-14 16:31:04.887
00001e48.000081c0::2016/03/14-13:31:04.929 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] SQL Server component 'events' health state has been changed from '' to 'unknown' at 2016-03-14 16:31:04.887
00002064.000090b0::2016/03/14-13:31:05.106 INFO [RES] Network Name <MSDTC_CL>: Dns: HealthCheck: MSDTC_CL
00002064.000090b0::2016/03/14-13:31:05.106 INFO [RES] Network Name <MSDTC_CL>: Dns: End of Slow Operation, state: Initialized/Reading, prevWorkState: Reading
00001e48.00009768::2016/03/14-13:31:05.904 INFO [RES] SQL Server <SQL SERVER (INSTANCE_NAME)>: [sqsrvres] LooksAlive returns TRUE