Assuming all windows servers belonging to the WSFC are on the same subnet, will the AG listener become a single failure point in system if all Application servers connect to the AG through the listener? If the answer is yes, what are the options to resolve this issue?
View 3 RepliesI am setting up a new pair of SQL 2014 enterprise servers in HA using Availability Groups. One of the servers is located here in our local datacenter (10.0.1.x) and the other SQL server is in our remote datacenter(172.16.1.x). I was able to setup the Windows Failover Custer without much issue. I setup the AG but when I try to setup the listener. I get the following error. I have setup an IP for both networks on the listener. I have confirmed that there is not any DNS records created for AG listener name. But I still get this error.
View 6 Replies View RelatedI have getting issues when i am creating listener for always On . Error shown as below
Can not bring the Windows server fail over cluster (WSFC) resources online. (Error Code 5942). The WSFC service may not be running or may not be accessible in its currents states, or the WSFC resources may not be in a state that could accept the request.
For information about this error code see "system error code" in windows development documentation
The attempt to create network name and IP address for the listener is failed. The WSFC service may not be running or may not be accessible in its currents states or the value provide for the network name and IP address may be incorrect. Check the state of the WSFC cluster and validate network name and IP address with network administrator. (Microsoft SQL Server error 41066) ...
Hello all,
First off, I appreciate the time that those of you reading and responding to this request are offering. My quesiton is a theoretical and hopefully simple one, and yet I have been unable to find an answer to it on other searches or sources.
Here's the situation. I am working with SQL Server 2005 on a Windows Server 2003 machine. I have a series of databases, all of which are in Full recovery mode, using a backup device for the full database backups and a separate device for the log backups. The full backups are run every four days during non-business hours. The log backups are run every half hour.
Last week, one of my coworkers found that some rarely-used data was unavailable, and wanted to restore a database to a point in time where the data was available. He told me that point in time was some time back in November.
To accomplish this, I restored the database (in a separate database, as to not overwrite my production database) using the Point in Time Recovery option. I selected November from the "To a point in time" window (I should note that this window is always grey, never white like most active windows, it seems), and the full database backup and the subsequent logs all became available in the "Select the backup sets to restore" window.
I then tried a bevy of different options from the "Options" screen. However, every restore succeeds (ie: it doesn't error out), but seems to be bringing the database back to a current point in time. It's never actually going back to the point in time I specify.
My questions are as follows:
a) Is it possible to do a point in time recovery to a point in time BEFORE the last full database backup?
b) If so, what options would you recommend I use? (ie: "Overwrite the existing database", restore with recovery, etc etc).
I again appreciate any and all advice I receive, and I look forward to hearing from anyone and everyone on this topic. Thank you.
Ryan
I have MasterDataServices installed on a server and the database is in an AlwaysOn Availability Group.The MDM front end currently is set up incorrectly and is referencing NodeA (primary node) for its database.I want to fix this but im unsure if i should:
-point the MDM front end to the cluster name, so it wont matter what server the databsae is on?
-create an Availability Group Listner, which would also decoupple the database referenced from a particular server.
is bulk logged recovery model support point in time recovery
View 9 Replies View Relatedwhy my listener has two dns entries? Shouldn't it only have the active node's address? I have the cluster RegisterAllProvidersIP set to 0. We have two synchronous local sql 2012 servers on windows 2012 r2 and one remote (different subnet) asynchronous node. Is it safe to manually delete the dns record that's pointing to our remote listener? Why did it add both of them?
View 7 Replies View RelatedI have setup two node SQL 2012 Always ON cluster with file share witness. I have configured two networks, one for heartbeat and second for public.My question is do I need a third network/ subnet for AG Listener? Which network does the SQL user databases in the AG group use to replicate between the replica servers?When I do the SQL backups, do I need to backup primary and secondary replicas or just backup the databases in the secondary replica?
View 4 Replies View RelatedAfter manual AG fail-over from primary to secondary the application is not able to connect the listener name for atleast for 5 - 10 mins
The telnet fails during this time from app server, the listener ip is on muti-subnet.
At the same when i try to connect it from SSMS from a remote machine it works fine.
We have a server A and a server B setup with SQL2014 High Availability - working fine.
I need to add an additional listener to our new DR site (SQLNODECOLO).
What is the best way to do this without impacting production?
Can I just go to server A and add the new listener server here (SQLNODECOLO):
I am not able to connect listener after manual failover.
(This is test environment)
Server1,Server3 -> Both synchronous (Within Same data center)
Server 3 -> Async (At DR location) -Forced Failover
Test1:
Failover Server1 to Server2 --> Able to connect Listener
Failover Server2 to Server1--> Able to connect Listener.
Failover Server1 to Server3--> Able to connect Listener.
Failover Server3 to Server1 or 2 --> Unable to connect Listener. Unable to ping Listener.
Failover Server 1or2 to Server3--> Able to connect Listener.
I am using below sub-nets:
10.11.192.0/22 10.11.192.130
10.12.192.0/22 10.12.192.140
In our(my company) current design we want to switch from failover clustering to Always On as high availibility solution.
I am currently testing the availiblity Group Listener function and have two questions regarding this.
First of all, is it possible to connect to a a listener by just using its "name" instead of "name,port", it is for our users very inconvenient to start using ports. If this is possible, where can I find information on how to configure this?
Second, is it possible to use the Availiblity Group Listener as loadbalancer or in combination with a loadbalancer to split the users over two or more nodes?*note we don't use azure.
We are trying to build HA and DR environment, combining AG and FCI. So we have 3 servers added to a cluster, 2 of them sharing the same storage and working as ACTIVE-PASSIVE cluster instance. The other server has a stand alone instance with its local storage, with the same drivers letters as the cluster instance.
Between the Active FCI and the Stand Alone, we set up an Availability Group. They are running fine, except by the listener. When the stand alone instance owns the Primary Replica, I am able to access the SQL Server instance by the listener, but when the Primary Replica is owned by the FCI, I can't reach the database by the listener (name or IP).
I've opened the same ports in both servers, it hasn't worked though.
I think theres something I'm missing about AG listeners. My test config is 1 SharePoint WFE & 2 SQL servers configured in an AAG.WFE, SQL1 & SQL2 servers are all on the same subnet.On the WFE, I configured an alias called SP15 to be used for the SQL servers. If I failover from SQL1 to SQL2 I just need to change where the alias is pointing on the WFE. So why do I need a listener? This works fine, albeit manually.I have read on some posts that an automatic failover process is possible. How can I add a 2nd IP address to the listener when both SQL servers are on the same subnet? The GUI doesn't seem to allow this.
View 5 Replies View RelatedI have a two node HA Always on group using a Listener. I would like to force a certain AD group to always be forced to the secondry node as they would only ever need to run select statements. If there an easy way to do this without using logon triggers?
View 6 Replies View RelatedEnvironment: SQL Server 2014 on Windows Server 2012 R2.
We have our availability group configured and working. However, when we try to connect to the AG listener from a remote server, we have to use the fully qualified domain name (FQDN) to connect. We'd like to be able to connect just using the host name. Interestingly, ping actually resolves the IP correctly for either.
Hi Guys,
I wanted to know how to do a point in time recovery on sql server 2000.
I wanted to go back in time when I restore the file.
Can u also suggest any good book about it. Does BOL explains about it, I couldn't find it in BOL.
Thanks in advance.
Joe
We have been testing point of time recovery using EM and found that this does not work.
We enter date and time and do net get the logs restored. Even if we use the default date it does not work. In Query Analyser we have have managed to recover to a point in time. Anybody got any idea why EM does not work.
We are using 2000 sp3
Dear All,
How do we accomplish point in time recovery with SQL Server database.
For example:
My backup schedule is
Monday - Complete database
Tuesday - transaction log backup
Wednesday-transaction log backup
Thursday - transaction log backup
Friday - Complete database
Saturday - transaction log backup
Sunday - transaction log backup
For complete database backup, I use the below syntax:
BACKUP DATABASE myDB
TO DISK= @File1
WITH DESCRIPTION = @Desc
For transaction log backup, I use the below syntax:
BACKUP LOG myDB
TO DISK= @File1
WITH DESCRIPTION = @Desc
With this scenario, can I accomplish a point in time recovery? For example, if my database crashes on thursday night. How do i do complete recovery till that time?
Pls guide...
Regards,
qA
Hi Everybody:
We plan to do point-in-time recovery for certain databases. We plan to do Complete Database Backup every night and transaction log backup every two hours from 8:00 AM to 5:00 PM. I have following questions regarding the log backup.
1. There are two type of backup 'Append to media' or 'Overwrite'. If I choose 'Append' for log backup, is that mean I only need to restore database against last log backup file because all previous log backups have been accumulated there?
2. Can I automatically truncate log after the backup is done? How I can do it?
Thank you very much.
Joan
Is is true that in SQL Server 7, a point in time recovery can not read the active logs? So that any point in time recovery has to be with in some time frame of the backups of the logs?
Example:
If you have a full backup at 5 am.
Log backups every 2 hours.
You need to recover at 3:55. You would have to go back to your full backup from 2 am and the transaction logs from 6, 8, 10, 12, and 2.
You would lose any work done from 2-3:55pm?
When restoring a database where the data file(s) are located under a mount point, seems to be a problem with reporting free space available.
DB Size - Say 30GB (25 Data, 5 Log)
E: Drive 20GB with 15GB Free
Restoring database file to
E:SQLMountPoint
- This points to separate disk with more than enough free space
SQL prevents the restore by stating there is not enough free space.
A long work around is
assign a drive letter to the large disk
Restore database using temp drive letter - F:SQLDATAMyDB_Data.mdf
Update sysfiles - changing drive & path - E:SQLMountPointSQLDATAMyDB_Data.mdf
Stop & restart database...
Is there a better way???
Wishlist - Restore only warns about free space - but allows continue...
Regards
I have two databases on a Production Server that I want to Log Ship to a Test Server. According to the sys.master files the physical File Location is on an E drive. Early attempts at Log Shipping these two files error'd out due to space issues on the E drive (one Log Shipped and then one err'd out). I was subsequently informed from the server group that they would prefer that I Log Ship these two database files over to the M Drive where more space is available. In fact, they modified the Server Properties / Database Settings / Database Default Locations (for Data and Log) to the larger M drive (I'm not really sure why they just don't increase the E drive space but there is proabably a good reason).
Okay, so now my problems have been solved. Easy enough. Now I deleted the successful Log Shipped database and started from scratch. However, as before, one db restored and one failed (due to space issues). Apparently, both db are pointing towards the E drive. How is that possible?
So here I am with one successful database and the normal sys databases pointing to the E drive. What is the best way of approaching this move to the larger and preferred M drive?
I make two full backups on Oct 1 and Oct 10. I want to restore the server to a state in Oct 5. So I just do as follows:
Perform a transaction log backup on the server on Oct 23. I have never backup transaction log in the past. Restore the server with Oct 1 full backup with NORECOVERY option.Try to restore to the point at Oct 5 12:00, with the transaction log.
But the restore fails and SQL Server said the transaction log does not contain the point. The point is too early. Why? Also my .LDF file is about 13G, but the transaction log backup is only 200MB. Why?
Hi All,
If I perform a truncate table (non-logged operation) in my application, will this preclude me from being able to do a partial recovery (point-in-time) of my app. using the transaction logs?
Thanks in advance,
Liz
How do I recover point in time if the database is participating in transactional replication and is a publisher.
View 0 Replies View RelatedIf I have a database backup from sunday, and a failure occurs monday... Can the backup .mdf and .ldf files be attached, and the backup log after the point of failure be applied to them?
The problem I am having is it looks like you can only restore from a .bak file, and then apply the log at the point of failure. IT doesn't look like you can restore the .ldf/.mdf files, and then apply the backup log from the point of failure.
Can someone please help? I'm in desparate need of fixing this !
Thanks,dp
Hello, we are trying to find a way to send all SQL traffic from multiple machines in a DMZ trough only one point. This way the firewall doesn't need to be opened to each and every machine.
This may be a simple question but I have never done it before. Any recommendations?
Thanks in advance.
I wrote a stored proc that essentially did the following:
[truncate tables X, Y, Z]begin tran[lots of inserts to tables X, Y, Z]if @@error <> 0begin rollback tran return -1endcommit tran
I'm not sure what happened, but the error message I received was:
Transaction count after EXECUTE indicates that a COMMIT or ROLLBACK TRANSACTION statement is missing. Previous count = 1, current count = 2.
I was under the impression that if an error occurred, it would never make it to the 'commit tran'. However, I believe that it rolled back the transaction, and then tried to commit. Nonetheless, a deadlock occurred and the database went into recovery. We have traced the recovery process and it made it to Phase 3 of 3 2% and another deadlock occurred DURING THE RECOVERY. We have tried restarting the server (suggested by the trace), but it immediately goes into recovery again. It is VERY URGENT to resolve this TODAY. I would greatly appreciate any and all help.
Thanks,
Matt
I am writing up a general purpose document regarding Disaster Recovery and Backup and Restore, etc. I have a question that I've been unable to find any definitive answer on, and I was hoping that someone might have an answer.
Here is the scenario and what I have so far, and my question:
Scenario - A simple database, with one MDF and one LDF, each on it's own disk, with no mirroring or filegroups etc.
Disaster - the LOG disk fails.
To simulate the disaster, I shut down SQL Server, and delete the LDF manually.
When I restart SQL Server, the database is marked as suspect. As expected :)
So, now the recovery begins..... I've read that in this case there is no data loss, but I find that hard to believe. Can anyone confirm?
Anyway, how to restore the database to usable status? Here is what I've come up with so far:
1) Do a backup of "the tail of the log." This works even though there is no log. I have no idea why really, but I can't proceed otherwise.
2) Detach the database.
3) Reattach the database. This auto-creates a new log file (albeit not in the location I want, which makes for more work after).
At this point the database appears to be fine. I have not seen any lost data or problems, but of course I'm working on a test database, not with live users hitting it constantly. If the database were under heavy use, I expect that there might indeed be data lost?
Is this the recommended way to recover from a disaster of this type? Or, would it be better to just go back to your last good backups and forget about "up to the minute" recovery in this case? Or is there yet another means?
Thanks,
Travis
Hi all,
We've got a problem with our server in that Windows has totally died - a routine upgrade appears to have gone wrong and the repair function of the Windows installer keeps getting stuck in a loop so I've given up on that front. What I was wondering is:
1. If I install a fresh copy of Windows 2003 R2 over the top of the existing install will that kill MSSQL Sever 2005 and/or Windows Sharepoint Services?
2. If so, is there a simple way to get them back?
3. If I install another copy of Windows on the D: drive is there a recommended way to move the MSSQL databases & Sharepoint to the newer install or a way of pointing the new install at the old databases?
I'm not an admin person (i'm a developer normally) so I haven't got a lot of background in this stuff so any tips, pointers or ideas are welcome. If this is covered somewhere on the MS site I'm happy to read but I'm just getting lost at the moment.
And, yes, I realise that backups are a good thing but the latest backups are not new enough for some items. The backup process has been adjusted accordingly.
Thanks
Michael.
Good Morning guys n Gals.
New user on these forums, so basically, hey, how are yas?
I have a bit of a situation, and have done a search - although not much info has turned up relating to my situation (maybe my search was just useless).
Anyways, basically, I run SQL Server 6.5 on NT4 server.
The disks were striped - not RAIDED.
What happened was, the 4th disk died, and we replaced it with a new blank drive.
Now, I am left with two DAT files (log and data) for my database.
I cannot remember how large these were created as it was many years ago.
I have no backups.
Reseting the status hasn't worked, also I have tried creating a new DB / Devices (in size similar to those reported in windows), and "moving" the devices to point to the original ones, but no luck: and thus was wondering if anybody had any hint / tips or ideas?
Cheers,
Jamie
Cluster services gives the high availability needed - that is great.But I have never seen any discussion about what happens when a nodefails - what do you do to get everything back to the active-passivetandem.I imagine there is not much difference in terms of recovery procedurefor either active or passive node. So I'm just going to make up ascenario that we have encountered. The system hard drive (not theshared disk) on primary node fails. Cluster fails over to the passivenode. Following are the problems I have at hand:-After installing windows, I need to install driver and configure thepermission to access the SAN. There is no way I could do it since thesecondary node has exclusive access to the disks.-Imagine I got that working, is there anyway to install SQL so SQLwould know this server used to be the primary node and attach the DBand translog automatically-Finally, there is no proper way to apply SQL 2000 service pack 3a.Originally when the cluster was fully functional, the service pack wasapplied to active node and that automatically upgrades passive node.Now we have a machine without 3a and a machine with 3a alreadyinstalled. See any problem?Consider all of the above as this one big question: What is a properprocedure to restore a cluster when one of the node goes down? Whetherit's the active or passive node.
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