Start SQL Server as an application, not a service, in minimal config mode, and only recovering master, from a command prompt:
[path to this instance]\BINN\sqlservr.exe -c -f -T3608
(Add -s InstanceName if this is a named instance.)
Now, in a different command prompt, connect using SQLCMD:
sqlcmd -S InstanceName -E
And issue a correction (triple-check ...
AGs are based on Windows Clustering. The WSFC procedures for quorum loss apply.
WSFC Disaster Recovery through Forced Quorum
Force a WSFC Cluster to Start Without a Quorum
Once the WSFC is running, you can then force AG, if needed. Perform a Forced Manual Failover of an Availability Group:
After forcing quorum on the WSFC cluster (forced quorum), you ...
No, you can't. You have overwritten the database so your best course of action is to restore from the latest backup. If that is 4 months old, that's it, you lost 4 months of data.
You should take backups more often and also before any critical operation (like this one) that has the chance of destroying data if it goes wrong.
Before you go and ...
Does the SIMPLE Recovery Model perform the same transaction logging as FULL Recovery Model?
Technically, no. The simple recovery model minimally logs certain operations under certain conditions, just like the bulk-logged recovery model.
keep record of each insert/update/delete transaction?
Yes, your data modifications will be logged (with a few DML ...
SQL agent jobs are stored in the system msdb database, so backing up that database will do what you need.
In a disaster, you can restore the entire msdb database, or, if necessary, recover individual jobs from a restored copy of msdb:
Serverfault: Recovering a specific job definition from an MSDB backup?
If you want them in a more immediately usable ...
There is no point in HA if anyhow DR technologies are allowed in simple recovery. Transaction log is a must for point-in-time recovery. The transaction log is what a DR technology uses to replay transactions that are done on Logshipped/mirrored databases, and since a log backup is not possible in simple recovery, you cannot configure HA/DR in simple recovery ...
What is the advantage of Always On Failover Clustering vs Always On Availability Groups?
The main advantages given 2012->2017 for an FCI is:
No instance level metadata or objects required to be synchronized
Databases can be in any recovery model
Only one copy of the databases is required (1x total disk space required)
Generally easier to troubleshoot as it ...
Most data warehouses are in Simple recovery model, and most true HA solutions require Full recovery (AGs, Mirroring). The minimum for Log Shipping is Bulk Logged, but that's not really true HA since there's no automatic failover.
If that's the case for yours (because really, a data warehouse in Full recovery is banana-town-crazy), your best bet would be a ...
It's because these methods rely on the transaction log, which itself is only reliable in the full recovery model. Please read the following page in its entirety, as there are several hints there about the differences between simple and full recovery, and why full is so important for DR:
Why Does the Transaction Log Keep Growing or Run Out of Space?
If you ...
Could you please let me know the best option to proceed and least complexity to maintain
Logshipping is your best option for Disaster Recovery since you are on standard edition.
Make sure you test the disaster recovery - simulate it so that you are confident when a real disaster strikes.
Note: In my company, we use LogShipping as a primary DR solution ...
It sounds like you may benefit from a Failover Cluster if all you're looking for is availability. You can run them on standard edition and if you take an N+1 route, you can have two nodes for HA and have one in a DR site ready to take over. You'll need to work on your storage availability for the DR side, but that's a whole other can of worms.
Another way is to just export to file using dbatools
Get-DbaAgentJob -SqlInstance workstation\sql2016 | Export-DbaScript
you can even script out your entire instance or subset including agent jobs, operators, logins, etc for disaster recovery purpose.
Edit: Above will have the flexibility to filter out jobs that you do not need. Backup / restore of msdb ...
Suppose I run the following query on a database with a recovery model of full:
INSERT INTO dbo.MY_FAVORITE_MSFT_EMPLOYEES WITH (TABLOCK)
SELECT 'SEAN GALLARDY' UNION ALL SELECT 'JOE SACK';
Under the full recovery model, SQL Server will write some representation of the data that was inserted to the transaction log. This allows redo threads on the secondary ...
What to do when your AlwaysOn cluster loses quorum?
I have been into this situation especially with Multi-subnet clustering spanning different countries (NY-LD-HK).
How to avoid Quorum Loss in a multi-subnet cluster ?
Change the cluster default setting to a more relaxed monitoring state especially Cluster Heartbeat settings using CrossSubnetDelay, or ...
After several hours of research and examining the current situation I think I managed to solve the issue. (Many thanks to fellow user ypercube for the inspiration and for Erwin Brandstetter who in parallel came to the same solution.)
So there were several layers of the problem.
Upgrading with pg_upgrade 9.3.2 --> 10.5 should be made in two ...
1.If you want to restore a encrypted backup to another server as usual you encounter the following error
Cannot find server certificate with thumbprint …...
2.Find the cert name : in this example vestacert
SELECT * FROM sys.certificates
3.backup the cert from source server (Source encryptedserver) :
BACKUP CERTIFICATE vestacert
TO FILE = 'c:\...
One approach is to create a database containing only synonyms referencing the objects in the snapshot you need for reporting. Clients can then connect to the synonym database and run queries just as if they were using the snapshot directly.
Whenever a new snapshot is created, run a script to update the synonyms with the new snapshot database name. Below is ...
Straight from the docs, with a two-node cluster without a witness:
One node's vote is zeroed, so the majority vote is determined out of a
total of 1 vote. If the non-voting node goes down unexpectedly, the
survivor has 1/1 and the cluster survives. If the voting node goes
down unexpectedly, the survivor has 0/1 and the cluster goes down. If
During Hurricane Sandy (natural disaster) and recently when moving our data center (managed failover), I was in your situation.
I have implemented Logshipping and was able to efficiently failover during the above scenarios.
The technique that I used was reverse logshipping (swapping roles between primary and secondary) - which allows you to swap the log ...
Please don't. You don't want replication. It's a data distribution technology: it's not suitable for HA. Just to name one of the many shortcomings of using replication for HA, you won't have automatic failover (which seems to be a requirement) and you'll need to code it yourself.
If you need HA, pick one among clustering (you can have a two-node cluster ...
You can restore the BACKUP with a different name in the same instance and follow steps below.
1) restore the database ( right click on databases > Restore ( it can be in the same instance )) with a differente name.
2) In this new database ( The restored one ) , open tables , search the table you've deleted, right button, Script table as > CREATE TO. This ...
In order to start the instance without interfering with an existing running instance (e.g ORCL), before starting anything:
sqlplus / as sysdba
create pfile='/tmp/initORCL2.ora' from spfile='?/dbs/spfileORCL.ora';
Edit /tmp/initORCL2.ora, and modify (add if doesn't exist) the instance_name:
Prevent listener ...
In the simplest case, when you restore a database, you tell RMAN to recover it to the most recent point in time by applying all the redo (archived and online) that is available. That will re-apply any statements that were executed during normal database operations including things like dropping tables and deleting data. If you want to restore a database to ...
This is login and permission related error. What kind of account are you using to connect when you build the AOA features? If you are using a domain account you can fix this error it in two ways.
Use the same domain account on all of the participating replicas. If you can't (allowed) change the account you could use the second option
Add the service ...
If you have:
1 Server in Each DC
Using SQL Server AlwaysOn Availability Groups
Then the following happens:
The Primary Datacenter Goes Down, Completely
How do you continue business continuity?
Assuming that the Availability Replicas are both set to Synchronous...
Quorum will have most likely been lost - you'll need to force quorum on the ...
It would be easier to mod the script so that it writes out either the last value, or a value every n times so that you can restart the script with the last known value in case of failure.
Linux hardware is pretty reliable, I've had servers that have had over 4 year uptime but of course nothing is guaranteed.
You have an XY Problem. You need to use an algorithm that allows you to restart from a specific point.
Dividend.num <=@endnum exists in two places.
Get rid of the 2nd one
Divisor.num between 2 and sqrt(dividend.num) is more restrictive than Divisor.num <= @endnum`.
get rid of the less restrictive one.
Since the NOT EXISTS ...
Is there any way I can handle it better than just letting the log files grow?
I believe you have the ideal options covered already. You either
Let the log files grow for the duration of the outage, or
Remove the replicas that are offline from the AG (and re-seed them when the primary datacenter is available)
I'd lean towards #1 if you have the disk space, ...