Draft for deploying a high available envirement with WSFC and AlwaysOn
Hello everybody, for my bachelors thesis I'm currently looking for Solutions to create high available Environments for software applications. In total I assume that I have three applications and a...
View ArticleProblem running Update-ClusterFunctionalLevel on Server 2019
Hi I have in-place upgrade a 2 node SQL cluster (from Server 2016 Std. to Server 2019 Std.). The whole process worked as expected.The SQL installation is not a Always On installation, it's just a...
View ArticleRead Scale Availability Groups and Listener
Is it possible to use a listener with a read scale availability group?I have read on some sites you cannot use one but in others that you can.If so what IP adress do you use for it? I have tried to...
View Articlehow to setup SQL AG from one region to another region?
how to setup/configure SQL AG from one region to another region?We have a SQL AG in one region and we want to replicate to another SQL AG in another region.I know that you cannot stretch a subnet...
View ArticleAlways-on related wait type
Any good links to descript the the wait time related to always-on below ??•HADR_SYNC_COMMIT•HADR_CLUSAPI_CALL•HADR_LOGCAPTURE_WAIT•HADR_SYNCHRONIZING_THROTTLE•WRITELOG
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Always-on : Log Cache, Log pool, Log capture
I am getting a bit confuse of the terms Log Cache, Log pool, Log capture .1. Are these resize in SQL buffer memory ?2. Log cache, as I know should be 60KB (fixed size) , what about Log pool and Log...
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EXEC sp_server_diagnostics into better format
How to get better format of sp_server_diagnostics xml output ?
View Articlemoving tempdb of FCI to local disk
Trying to move sql FCI tempdb to local disk and it fails with the below message. I have tried before multiple times and always works ok for FCIs - physical and virtual machines. This one is WMware vm...
View ArticleAAG FAILOVER
HI,If in aag failover happens from primary to secondary , secondary will remain read only untill unless we manually change read write ? Thanks
View ArticleDistributed Availability Group built on AG with one replica ??? Transaction...
HelloWe think to create distributed availability group (DAG) which will have AG1 with 2 replicas on one side and AG2 on other side with one replica (forwarder) only.But as I understand if availability...
View ArticleProblem with Enable Availability Group in Secondary Database (Clustering)
I have existing Cluster Existing Primary ServerI needs to add one new secondary server for the Existing Cluster server, I have added node to the Existing cluster,I have created Mirroring Endpoint and ,...
View ArticleAlways ON uses windows cluster IP to connect DB !
Hi Experts,We have Always ON configured between two DB servers which are located in two different sites.Since we don't have common segments between WAN's,we are using multi subnet cluster here. Up to...
View ArticleAutomatic Seeding Failures
HiWe are running a two Server Always On HADR system with enabled Automatic Seeding. Both SQL Servers are Microsoft SQL Server Enterprise (64-bit) with Build 14.0.3029.16 and both are running on Windows...
View ArticleSQL server 2016 Replication issue - The process could not execute...
Hi All,i am facing issue with Transnational replication. there is NO errors in Distributor to Subscriber. seems issue in Publisher to Distributor(Not sure). I can see below errors in REPL monitor,The...
View ArticleDo we have any official documentation of newly introduced dpt_entry_lock (in...
dpt_entry_lock affects the overall synchronization process of Always on AG in SQL 2016.Regards, Ashif Shaikh
View ArticleAutomating Windows Patching with AlwaysOn Manual Failover w/h Asynchronous
We have an AlwaysOn High Availability Group set for Asynchronous/Manual failover (it's required by client). It is SQL Server 2016 running on Windows Server 2012 R2. It is set up as a 2 node Windows...
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SQL database restore got faster, but why?
I ran into a performance issue with restoring a very large database over the weekenda colleague suggested I add the service account (domain user running sql server) to the security policy as shown...
View ArticleIs Always On Failover Cluster Instance considered legacy?
Is Always On FCI considered legacy technology to be avoided in favor of AG? Or is it still robust option for HA that will be supported by MS well into the future (unlike the now deprecated mirroring...
View ArticleChange SCCM databse to High AG SQL Listener
I have created Always on with SQL1 as Primary and SQL2 as Secondary and in Asynchronous mode. SQLLST is the virtual name for the listener.I tried to change the SCCM DB from SQL 1 to SQLLST but it...
View ArticleListener IP does not get updated on all DNS Servers post failover/failback of...
We got SQL 2014 2-node Multi Subnet AlwaysOn Availability Group with Auto Failover is configured in our environment. We have set the Cluster parameters for AAG as RegisterAllProvidersIP=0 &...
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