Recommended Setup For NIC Heartbeats / Mirroring Traffic
Jun 6, 2007
Would anyone have a suggestion on how to setup a partner to partner NIC configuration for heartbeats/mirroring traffic? I've been told this is the recommended setup but have not found much on how to do it. We currently have a teamed NIC config for redundancy, but would like to have a separate set of NICs on each partner so that mirroring traffic is not interrupted by any regular network traffic.
We also have a witness running in full safety mode. Does this mean partnerA and partner B both need NICs with a crossover cable between them AND is it recommended for the witness to also have extra NICs to both partnerA and partnerB (w/ crossover cables)?
Any suggestions/help/links on properly configuring this would be appreciated.
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Oct 27, 2006
We are using the following configuration:
2 stand alone Windows 2003 servers 64 bit.
Each have two Gig Network cards configured with different IP addresses.
Each running multiple instances of SQL Server 64.
I am trying to set up a mirror where mirroring traffic between servers will be dedicated to a secondary IP address on the second NIC.
I am also trying to avoid Windows authentication.
Interesting enough: Security Configuration screen suggesting you to use fully qualified TCP addresses and, at the same time, does not give you such an option...
Would someone please point me in the right direction?
Thank you.
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Jun 5, 2006
As stated in the subject I have a situation where if database mirroring is employed for either manual or automatic failover, all the client (including web connections) connections use ODBC not ADO, or OLEDB etc... so what methods are recommended? Client side redirect is not available so I could not employe the "Data Source =A; Failover Partner=B..." option.
Right now the method employed (pre database mirroring and basically employing log shipping on SQL 2000) is to have a DNS alias for the ODBC connection so that if the server were to change in a failover situation the DNS record would have to be altered, so that all the client connections would not have to be reconfigured.
Regards,
Dominic Baines
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Nov 14, 2006
Prepare to setup DB mirroring. Three MS 2003 servers. Two SQL 2005 standard edition as partners and one SQL 2005 Express as witness. Question:
1. Servers are under workgroup (not domain user). Is it ok to use local service account to run DB engine service on all three machine? Is SQLServerAgent service required when setup mirroring?
2. If SQL Server is running as a local service, Do I have to manually create certificates before setup mirroring?
3. After create certificates, can management studio be used to create endpoints on all three machines? If yes, how to select certificates that have been created? If no, can management studio be used to setup mirroring after endpoints have been created?
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Apr 5, 2006
After going through the Enterprise Manage mirroring setup, I get the error message ...
The server network address "TCP://MYMACH.mynet.net:5022" can not be reached or does not exist. Check the network address name and reissue the command. (Microsoft SQL Server, Error: 1418)
I have three instances of SQL Server 2005 Enterprise Edtion
MSSQLSERVER (primary) endpoint 5022
MSSQLSERVER (partner) endpoint 5023
MSSQLSERVER (witness) endpoint 5024
I have enabled TCPIP and named pipes on all three protocols.
In surface configuration I have enabled everything.
Each instance has the -T1400 flag set.
Each instance is running under mixed security.
Each sql Server and sql agent instance runs exactly in the same domain account.
The machine has been rebooted.
The following tests all pass
telnet MYMACH.mynet.net 5022
telnet MYMACH.mynet.net 5023
telnet MYMACH.mynet.net 5024
This problem happens both with Enterprise Edition and Developer Edition.
Any ideas?
AIM
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Nov 28, 2007
Hi, I'm having an issue setting up Database Mirroring. The environment here could be an issue.
I'm trying to set this up using 2 different servers both are SQL Ent Edition SP2, windows 2003. I'm not using a witness at this time. The 2 servers do not belong to a domain. They are both in workgroups.
I can setup the endpoints and everything up to the point just before I start mirroring. The issues happen when I go to start mirroring. It gives me a nasty error "please use a FQDN to establish the endpoints. The problem here is I don’t have any FQDN for these servers since they're in a Workgroup.
So, my question here is and I haven't found anything stating that you can't set up mirroring in a workgroup environment but is it possible? I'm assuming since its yelling at me for a FQDN that I can't. Is there any other ways to implement mirroring without a domain?
Thanks for your time, help!
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Feb 29, 2008
Hello room,
I am newbie to Database mirroring.
I have 3 window server 2003 running in window virtual server 2005.
Server1 of sql 2005 instance:
-- SQLDev01
Server2 of sql 2005 instance:
-- SQLDev02
Serve3 of sql 2005 instance:
-- SQLDev03
The servers are running on DC and the sql servers was setup with Window authentication mode only.
Also, All the sql instances'services are running under single domain user name.
e.g: sqladmin.
I have tried to setup manually and t-sql and both running into some issues.
Can anyone help and share t-sript to setup database mirroring.?
Thanks for the help.
TJ
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Apr 15, 2008
when i try to establish mirroring with the below command i am getting an error..
alter database SharePoint_AdminContent_c32bc-190-4-b1-1cab
set partner = 'tcp://mirror-server.3000';
go
the error :
Msg 102, Level 15, State 1, Line 1
Incorrect syntax near '-'.
i am not sure why it's throwing an error..any help would be appreciated...
thanks
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Jun 23, 2006
Hi:
I am looking for a Step-by-Step document for setting up and configuring of database mirroring if one is available. I have gone through BOL and found some related documentation but want to see if a step-by-step document is available. If so can any one please direct me to the resource.
Thank you
AK
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Sep 11, 2015
What are the DB mirroring trace flags and how to use ?
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Sep 13, 2007
I'm setting it up using the directions provided by Microsoft @
http://msdn2.microsoft.com/en-us/library/ms189047.aspx
The problem I originally ran into was exactly like the one mentioned in the
following posting:
http://www.microsoft.com/technet/community/newsgroups/managed/dgbrowser/en-us/default.mspx?&query=mirroring&lang=en&cr=US&guid=&sloc=en-US&dg=microsoft.public.sqlserver.clustering&p=1&tid=95381f96-a34a-4d99-9e31-12719452a11d
I found an article online stating that this can occur of your principle
backup wasn't restored to the mirror server in NO RECOVERY mode. I missed
that step when performing the first restore, so i deleted that database and
started over using the NO RECOVERY option on the mirror restore.
The problem I've run into now is that after my restore executes and
completes, the database remains in a (Restoring...) state and never becomes
accessible.
Anyone know what causes this?
Thank you,
- Tyler
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Oct 27, 2015
I have a 2 node cluster having 4 cores each wherein having 3 instances of SQL 2008 R2 enterprise comprising of 60 databases, 20 on each instance. I need to setup mirroring for each of the databases to a secondary server having 4 cores and 3 instances.
What i understand is that in this case the mirror server will be providing max of 512 worker threads and the 60 mirror databases would consume 240 threads.
What all needs to be checked for looking into the feasibility of going ahead with a async mirror setup as mentioned above.
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Dec 10, 2014
I have setup SQL AlwaysOn between primary and DR data centers. Here is the setup:
Primary data center: Server1 (Primary), Server2 (Sync Commit Secondary), Server3 (ASync Commit Secondary)
DR data center: Server4 (ASync Commit Secondary)
Data synchronization and manual failover works fine. But, sometimes, the AlwaysOn cluster automatically fails over to Sync Commit Secondary on Primary data center. Here is the error message from Failover Cluster Manager->Cluster Events:
"Cluster has missed two consecutive heartbeats for the local endpoint xx.xx.xx.yy:~3343~ connected to remote endpoint xx.xx.xx.zz:~3343~"
"Cluster has lost the UDP connection from local endpoint xx.xx.xx.yy:~3343~ connected to remote endpoint xx.xx.xx.zz:~3343~"
I had our network engineer check all connections multiple times and he confirmed everything is fine. But he was also able to confirm (using monitoring tools) that right at the time of a failover, there is almost 2GB worth of traffic going from Primary Server to DR server. That happens every time. I had checked the times of all failovers and there is no job or process occuring that will produce 2GB worth of data. Also, this happens regardless of which server is primary.
Even though the failover works fine, this unexpected automatic failover due to missed heartbeats are occurring often (2-3 times a month).
Here is the list of errors from the Cluster Validation Report:
Under Network Section, I see the following error messages in Red:
Validate Network Communication
Network interfaces Server4 (DR) - SAN_Team and Server1 (Primary) - SAN_Team - VLAN 20 are on the same cluster network, yet address xx.xx.xx.pp is not reachable from xx.xx.xx.yy using UDP on port 3343.
Network interfaces Server4 (DR) - SAN_Team and Server2 (Secondary) - SAN_Team - VLAN 20 are on the same cluster network, yet address xx.xx.xx.qq is not reachable from xx.xx.xx.yy using UDP on port 3343.
[Code] ....
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Feb 19, 2015
We have a database. It is enabled for mirroring. We need to delete the old records. That is around 500k records from a table. But it has foreign key relation. How to do in Production servers these kind of deletes?
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Sep 21, 2000
What sort of traffic would be going on between the machine I am on Enterprise Manager and have a server registered (my local machine) to the actual SQL server? I haven't logged onto the actual SQL machine I only have it listed as a registered server and it's sitting there in the list with it's little green "started" icon.
I'm asking because i'm getting accused for a server going down. I opened my EM around the same time as this SQL server went down and some network people see my machine talking to the SQL server at the same time.
Any ideas? Thanks...
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Jul 20, 2005
Hi,The application setup is: Access frontend + ODBC (TCP/IP) + MSSQL7Few days ago i was informed that the app generates high networktraffic. Thusi started to look for some savings.I found out (sniffer) that even if the client is idle every 30sek. aTCP packet comes from client to server, then answer goes back. Thepacket seems to be empty (TCP data is 1 byte: 0x00), the answer isempty as well. Seems like kind of watchdog. And it does not seem to berelated to ODBC refresh and any other option possible for setup inAccess client (I set those settings to different that 30sek. values,and 30 sek. traffic still exists).Does anybody know what those packets are for, what module isresponsible for them and how to change interval?My best regards for anybody reading this post,Mirek
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Sep 21, 2006
I am having a problem and this may be more of a network issue bandwidth issue: When I ping from one of my dataservers to another dataserver it takes 10ms. However, if I ping from a fileserver to a dataserver it takes 1ms. Also, if I ping from a Citrix server to another Citrix server or one of the data servers, it also takes 10ms. What are my options?
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Oct 15, 1999
Can anyone HELP!!
I have a system set up with 2 servers, the master server replicating the data to the backup server. Each server has two network cards, 1 which links directly to the other server.
The problem is the replication is being routed round the network making the direct link useless.
How can this be ammended!!
They are both logging into the same primary controler.
I am open to sugestions
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Nov 2, 2007
OK, I'm troubleshooting a performance issue on one of our production servers, but I really can't t-shoot and tweak in real-time, so I took a snapshot of "a day in the life of" my production server using the profiler.
I want to run the sql commands I collected on another server I set up identical to production, and play around there.
Does anyone know of a good tool to "replay" those captured commands onot another server?
___________________________
Geek At Large
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Sep 7, 2007
I have a database of details of users that visit my site. Among other things, it saves the ipaddress and the date/time of the visit. I would like to be able to determine the unique visitors (by ipaddress) that i have on any given day. The problem though is that the data is saved as a date and a time, thus when I try and determine the unique visitors, since they are all a different time, MSSQL thinks they are all unique visitors. Any ideas how I can get around this without acctually modifying the data in the underlying table?
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Aug 8, 2006
I can sucessfully encrypt/ decrypt 1 column, but Im under the impression there is also a way to encrypt the data being sent over the network by using a certificate? I can find lots of info, but no starting point or clear cut instructions. Could someone please assist?
TIA, cfr
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Jun 15, 2007
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.
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Sep 26, 2007
Query(a report) to list the technicians/traffic controllers separately with following details.
EmployeeId,Name,Salary,Address,UnionId, and the most recent medical examination date for traffic controllers
Employee (EmployeeId(p),Name,Salary,Tpye).
MedicalExamination(MedicalNo(p),EmployeeId,MedicalDate)
EmployeeUnion(EmployeeId(p),UnionId(p))
"Type" field in Employee table tells whether its a technicians or a traffic controller.only traffic controllers has medical examination.
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Sep 26, 2007
Query(a report) to list the technicians/traffic controllers separately with following details.
EmployeeId,Name,Salary,Address,UnionId, and the most recent medical examination date for traffic controllers
Employee (EmployeeId(p),Name,Salary,Tpye).
MedicalExamination(MedicalNo(p),EmployeeId,MedicalDate)
EmployeeUnion(EmployeeId(p),UnionId(p))
"Type" field in Employee table tells whether its a technicians or a traffic controller.only traffic controllers has medical examination.
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Nov 13, 2015
I looking for a way of measuring how many MB of outbound SQL data is being transferred during the course of a day from an OLTP instance.  Data is pulled from this server by a DW in the same domain and adhoc via a linked server. I'm looking at perfmon but nit sure if this is the correct tool and if so which counters to use.  I'm looking for the total MB/GB over the period not the MB per sec.Â
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May 3, 2008
Server A = primary SQL DBs (mirroring origination)
Server B = failover SQL DBs (mirroring destination)
For database mirroring a witness is required.
Can the witness live in another instance of SQL on server B?
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Jun 3, 2015
Ive read a few docs and i have some doubts about the implementation i ll make.
I will setup a FCI between ServerA and ServerB. So my databases will be running on server A or on ServerB. they will be replicated using AllwaysON to ServerC.
Because ill use a diferent vlan for AllwaysON replication iam having some doubts on how can i set the endpoints...
For example.
I ll have the following ips configured for AllwaysON replication on Server A, Server B and Server C 10.10.240.1/10.10.240.2/10.10.240.3
Database teste will be running on serverA. the endpoint configured will be 10.10.240.1 but when database fails over to Server B (using FCI) the ip configured there will be 10.10.240.2... so AO replication will stop working.
I tough on associating a virtual ip to the AllwaysON cluster resource but Microsoft doesn't recommend to alter AllwaysON cluster resource.
How can i implement this configuration?
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Oct 21, 2007
I have been told that I need to setup a crossover cable between a Server that has an application to have a dedicated NIC (using a crossover cable) to a server that has SQL 2005 Sp2 for fast access. How is htis done as far as SQL Properties, and NIC Settings, How do I make sure SQL will transmit using that 2nd NIC?
Thanks,
David Baur
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May 31, 2002
I have a 6.5 database running on NT 4.0 that is approximately 43GB in used space. I am making a case to management for some sort of upgrade to the whole system.
What sizes of 6.5 databases would anyone consider more "risky"? Is 43GB large for 6.5 (my thought is that it is)?
Thanks,
Kurt Symanzik
Handleman Company
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Feb 9, 2004
Let's say for instance that you have a group of tables that stores address information for different groups (i.e. Doctors, Patients, Providers, etc.) Would it be better to create each table to store the address information or create an Address table that would store this information with an Address type and a link back to each table?
I prefer the second choice, but am having a hard time convincing other devlopers to follow this route. Maybe if I have some input from a more experienced users group I can stress my point a little more effectively. Thanks in advance for any input you can provide.
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Jul 14, 2006
I need to import a CSV file with a few million records and 50 fields into a table. Only 1 column in the file needs to be transformed and a second column needs to be checked for data validity (e.g. don't want to let someone pass in 'CA' for an integer field.). Two approaches come to mind:
1. Use SSIS to read the file directly into the table, then apply t-sql to do a mass update to the single field that needs to be transformed. (with this approach it is not clear how to check the data valdity in each row via t-sql, though).
2. Use SSIS to import the file, 1 line at a time, transforming the data and checking its validity.as it goes. I suspect this approach will be much slower than that in 1) but I haven't tried it yet.
Which way do you think would be the fastest?
TIA,
barkingdog
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Aug 22, 2005
Can somebody recoommend me books for sql server 2005. I am interested specially in CLR inside sql and Business Intelligence.
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