A client’s availability group showed in SSMS, but no role appeared in Failover Cluster Manager. Here is the sequence of steps that causes this and what to do.
SQL Server Cluster Resource in Online Pending Too Long
A SQL Server cluster resource that stays in Online Pending for minutes can be waiting for database recovery. This post reads the cluster events and log lines of one case, finds an 8 minute gap, and traces it to a huge number of virtual log files that a log backup and a shrink fixed.
SQL SERVER – Always On Availability Group Listener Missing in SSMS but Working Fine in Failover Cluster Manager
My client’s AG listener worked fine in Failover Cluster Manager, yet SSMS showed nothing. Here is what causes a listener missing in SSMS and the fix.
SQL SERVER – FIX: Msg 41105: Failed to Create the Windows Server Failover Clustering (WSFC) Resource With Name and Type ‘SQL Server Availability Group’
Creating an availability group failed with Msg 41105: Failed to create the WSFC resource with type ‘SQL Server Availability Group’. Here are ways to fix it.
SQL SERVER – Steps to Change IP Address of SQL Server Failover Cluster Instance
Moving to a new VLAN? These are the exact steps to change the IP addresses of the Windows cluster nodes and of a SQL Server failover cluster instance.
SQL SERVER – AlwaysOn – Queries Waiting for HADR_AR_CRITICAL_SECTION_ENTRY
After a Windows cluster briefly lost quorum, a client’s AlwaysOn queries got stuck waiting for HADR_AR_CRITICAL_SECTION_ENTRY. Here is how we fixed the wait.
SQL SERVER – Cluster Resource ‘AGName’ of type ‘SQL Server Availability Group’ in Clustered Role ‘AGName’ Failed
Configuring an availability group is easy; trouble starts when the cluster breaks. Here I fix a failed cluster resource of type SQL Server Availability Group.