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28
votes
2answers
10k views

I/O requests taking longer than 15 seconds

Usually our weekly full backups finish in about 35 minutes, with daily diff backups finishing in ~5 minutes. Since tuesday the dailies have taken almost 4 hours to complete, way more than should be ...
13
votes
3answers
2k views

Will increased network latency cause table locks in MS SQL Server?

If I'm making a single call to a SQL Server database over a high-latency network, will table locks occur due to that latency? Say I query table A for some records, and SQL Server has to return that ...
12
votes
1answer
438 views

Best practices for connecting DBs that are in different geographical regions

We are about to set up SQL Servers in different countries. We need to link them, but we don't have to have a direct link (as in linked server). In other words, they can be loosely coupled. Is it ...
8
votes
3answers
6k views

Does disconnecting the network stop a query?

I recently executed an update query against 100,000 records. I realized I'd made a mistake while the query was running and quickly unplugged the network cable. Does the update query stop ...
8
votes
1answer
270 views

Does RSS Profile have an effect on SQL Server with NUMA setup?

I'm curious whether the RSS Profile which is default NUMAStatic on Windows 2012 R2 could/should be changed for SQL Server with a NUMA setup. Has anyone done performance benchmarks on high load SQL ...
7
votes
1answer
353 views

Can SQL Server be configured to backup to a network share through a separate NIC?

We're in the process having our SQL Server instances backup to a network share, but our network admins want to try and divert the bandwidth from the backups through a different network segment. I was ...
6
votes
2answers
13k views

SQL Server: Should we use TCP or Named Pipes or use the default?

When connecting to a SQL Server 2008 R2 from a .NET 4 client application on a different server in the same LAN, one can set three different network protocols: TCP Named Pipes Don't set anything in ...
5
votes
4answers
19k views

Changing IP address of SQL Server 2008 R2

I would like to know if there are any dangers or relevant precautions before changing the IP address of a SQL Server 2008 R2 box. We have built a virtual PC with Windows Server 2008 R2 and SQL Server ...
5
votes
3answers
997 views

Using SQL Server on separate networks

I have a bunch of SQL Servers installed on Windows2008R2. Currently, each windows server has two NIC's, each connecting to separate networks. In other words, each server appears on each network. ...
5
votes
1answer
2k views

Ports necessary for Oracle 11g Replication across a firewall?

We have two Oracle 11g Enterprise Edition servers that need to replicate data via Oracle streams. However, the two servers are on untrusted domains and connect via a VPN. On end of the connection is ...
5
votes
0answers
35 views

Excessive Prelogin Packets

Running a client/server application where the client app is powered by MS Access and the database on the server is in SQL Server. We have two locations and have active users at both. We recently moved ...
4
votes
3answers
4k views

How do I monitor bandwidth used by SQL Server on port 1433?

I have a single server running a .NET web application and a SQL Server database (2008 Standard). I'm planning to move the database onto a separate server but in order to provision the network hardware ...
4
votes
1answer
8k views

Analysing SQL Server Network I/O

A frequent request I get from clients is to help figure out what queries or clients are making the largest contribution to SQL Server saturating an Ethernet link. Ideally I'd look at some counters ...
4
votes
2answers
2k views

TdsInputBufferError not 0 in LoginTimers errors of RING_BUFFER_CONNECTIVITY of sys.dm_os_ring_buffers

I've got an issue with SQL Server. The value of TdsInputBufferError is not 0 in LoginTimers errors of RING_BUFFER_CONNECTIVITY of sys.dm_os_ring_buffers. This happens randomly, once or twice a week, ...
4
votes
2answers
148 views

How to backup MS SQL Server databases off-site?

Microsoft SQL Server supports backing up to remote network locations only by means of UNC names the SQL Server (and user account it's running under) has access to. Is it possible to create backups ...
4
votes
1answer
12k views

command or query to ping SQL server

I have 2 windows 7 machines on a very high security domain one acting as a server, the other as a client. Each box has a SQL Server Express 2005 database and application "A", however I'm only using ...
4
votes
1answer
2k views

Network design considerations for Oracle Database Appliance

With the introduction of Oracle Engineered Systems the DBA is moved somewhat closer to infrastructure design decisions, and expected to at least have some opinions of the network design requirements ...
4
votes
1answer
8k views

Communication link failure for some queries to linked server

I am seeing the following error in SSMS (server has Windows Server 2008 and Microsoft SQL Server 2008 R2 (RTM) - 10.50.1600.1 installed) when running some queries against the linked server, in ...
4
votes
1answer
205 views

Is this a sane model for a network provisioning system?

I'm sketching out a model for a network setup, where I have the following conditions: There are multiple nodes which contains a number of switches each. Each switch has multiple services, which may ...
3
votes
2answers
478 views

Backup SQL DataBase to C$

Another simple SQL backup question from me.... I've got a SQL Server database running on SSMS 2008 and am trying to configure some backup jobs. I am now seemingly fine with backing up and restoring ...
3
votes
1answer
2k views

Where do I find the meaning of TdsInputBufferError numbers?

We are having some sporadic connection errors on some of our SQL servers. I did some searching and found out about the Ring Buffer in SQL 2008 R2 and found some information, but I am not entirely sure ...
3
votes
2answers
4k views

How do I limit Oracle to use specific ports?

I've built a new Oracle 9iR2 instance on a Windows 2003 32-bit cluster. Of course, it's version 9i for reasons out of my control. Several application servers connect to this instance, and each opens ...
3
votes
2answers
971 views

SQL Server Configuration Manager 2012 - unable to set IP All = No

I have a 4-node SQL Server 2012 SP1 cluster, and under Network Configuration -> TCP/IP -> Protocol (tab), I am able to switch Listen All from Yes to No. However, when I hit OK (or Apply), I get the ...
3
votes
1answer
953 views

Network issues with sql server

There are two servers on co-location. First is Windows Server Standard 2008 R2 SP1. Second is Windows Server 2012 + Sql Server Standard 2012 SP1. First server has a task with a report against tables ...
3
votes
0answers
1k views

Once more about SQL Server virtual accounts

Let me reboot my question on SQL Server virtual accounts permissions The (same) MSDN article on the same version 2012 of SQL Server "Configure Windows Service Accounts and Permissions" states: ...
2
votes
1answer
4k views

What are the ports and directionality of the TCP connections used in MySQL replication?

I wanted to know how replication works in mysql. Both slave and master have mysql server running say on port 3306. Slave acts like a client and master acts like a server. Does slave always bind to ...
2
votes
2answers
305 views

Does UDP Port 1434 need to be open for named instances with static TCP?

I have built a named instance which is running on a static port, 50101. The network guys have opened the port on the firewall to allow incoming connections. I have asked them open UDP port 1434 too, ...
2
votes
1answer
2k views

Can you put a SQL DB on a NAS? [closed]

Can you put a SQL DB on a NAS drive? For example can I put the PostgreSQL DB "files" on a Sinology NAS or am I better to leave everything on a "real" PC? (like, say, a regular PC server running Linux) ...
2
votes
1answer
1k views

Does Oracle run queries to completion after SQLdeveloper disconnects?

The query is a CREATE TABLE t as SELECT .....; statement. Can I reliably count on Oracle to complete this after I disconnect? After I re-connect, how can I check on the status of this query?
2
votes
1answer
58 views

SQL Native Client and network disconnects

Does the SQL Native Client provide support for maintaining a persistent connection over the network at the driver level if there is a momentary network disconnect like a 999 error? Our applications ...
2
votes
2answers
4k views

How to connect to Oracle 11g using “Navicat for Oracle”?

My Oracle 11g Enterprise Manager runs like this: I have taken the following screen-shot after my Oracle installation has been completed: I have the following Oracle-related services running: ...
2
votes
1answer
296 views

SQL Bulk Insert Impersonation issue

I am running Microsoft SQL Server 2012 SP on a Windows Server 2008 R2 Standard SP1 box. The SQL Server service is running as a simple windows domain user (nothing special, no admin rights, etc.) I am ...
2
votes
1answer
86 views

What methodology is being used to poll SQL instances when using sqlcmd with the -L switch?

I've discovered that issuing sqlcmd -L from the console of a SQL host in my network only reveals other instances on the same subnet. It used to reveal all instances on the network so I was wondering ...
2
votes
1answer
810 views

SQL Server connection fails over VPN

I have an OpenVPN network consisting of VPN server (Linux), client (win8) and SQL Server (win 2008 server, SQL Server 2005), I'm trying to (of course) connect client to server. When I try to connect ...
2
votes
1answer
2k views

Storing IPv4 and IPv6 hosts and networks

I have to store the IPv4/v6 address and networks(CIDR notation) in a MySQL database. Unfortunately, I am constrained to use Mysql. So, I'm looking for the equivalent of the inet type of PostgreSql. :...
2
votes
1answer
3k views

Remove an IP address from server config

What is the safe way to remove an old IP address from SQL Server configuration? The scenario is, I have a server with 2 NIC's that should have been configured for teaming but weren't at the time SQL ...
2
votes
1answer
3k views

Connection to localhost dramatically slower than to network server

I have an Excel VBA application that connects to a SQL Server 2008 R2 database through ADODB. When I'm on the network at work, the connection is almost instantaneous. When I am at home working with ...
2
votes
1answer
252 views

database connection time expired issue

I have a server machine and four client machine for database connectivity. I installed sqlexpress 2008 in server and one machine and all remaining systems, they have connected the database through ...
2
votes
1answer
520 views

PostgreSQL: Trouble accessing another server's Data via NFS

Background: I'm working on a 2-node High Availability PostgreSQL database cluster for my company. The system has a master/standby setup where the standby takes over the duties of the master when the ...
2
votes
0answers
74 views

How to avoid Network issues for SQL Server 2012 AlwaysOn

I have SQL Server 2012 and have setup AlwaysOn for High Availability. The infrastructure is on Azure VM's. After moving to this setup, we are frequently observing Network issues which either causes ...
2
votes
1answer
187 views

Fast local backup - Very slow backup via Network

Since last week, i'm having this problem. Backups are taking forever to be done if I make them via Network. If I backup the database to a local disk ( or N'nul' ) it's very fast. It's strange ...
2
votes
0answers
94 views

Networking (classmate like) website database model

I am working on a project that consists in building a networking website like the Classmate web site. I have proposed a database model based on the social media database model presented on the ...
1
vote
1answer
2k views

What happens to a transaction if the network connection fails?

What happens to a transaction when the client connection is lost. Example the client is a web application code that starts a transaction to a remote server instance. The client sends the sql code to ...
1
vote
2answers
1k views

Can't use SQL Server database on a networkpath

I am working on a project for a very long time now. It's a .NET application which works with a SQL Server database (.mdf, LINQ to SQL). Now I am almost finished and wanted to run some tests. But ...
1
vote
2answers
4k views

Best practices for service name / aliases in tnsnames

I have this idea that service names / aliases given to connections descritors in a tnsnames.ora (not the one in the server that dblinks use, but the one for the public) file should in no way be ...
1
vote
1answer
158 views

How to grant access to IP range in Postgres?

I would like to configure my Postgres DB to be accessed by any IP 10.8.101.*. I know I have to create a rule in pg_hba.conf but I'm not sure what it should look like. My LAN IP is currently 10.8.101....
1
vote
1answer
82 views

Disabling protocols using SQL Server Configuration Manager or ENDPOINTs

Besides SQL Server Configuration Manager, it's possible to disable access to specific SQL Server protocols by disabling the default ENDPOINTs, but what's the difference between the two options? Are ...
1
vote
1answer
876 views

How to isolate that network is issue of bad query performance [closed]

I would like to know how to isolate SQL Server bad query performance is caused by NETWORK and not the SQL Server. Are there any specific tips and tricks in SSMS, wait types, or specific PerfMon ...
1
vote
1answer
613 views

How does disabling a network protocol affect SQL server performance

The SQL server 2000 process info monitor displays about 100 processes that use a mix of Named Pipes/TCP-IP and (integrated authenticated) users. I was wondering if: disabling Named pipes - or - TCP-...
1
vote
2answers
32 views

MySQL Replication issues on server placed in different continents

I am running 2 cpanel servers with MySQL Replication set on them, one in france the other in US. Running a database hungary site. Replication was setup to load balance as well as for failover reason ...