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26
votes
2answers
9k 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 ...
12
votes
3answers
1k 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
386 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
3k 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 ...
7
votes
1answer
145 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 ...
5
votes
3answers
824 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
1k 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 ...
4
votes
3answers
3k 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
2answers
8k 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 ...
4
votes
2answers
95 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
5k 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
1answer
6k 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
148 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
375 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
4answers
11k 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 a built a virtual PC with Windows Server 2008 R2 and SQL ...
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
3k 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
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, ...
3
votes
2answers
8k 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 ...
3
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 ...
3
votes
1answer
631 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
871 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
382 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
748 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
2answers
2k 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
545 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
2k 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
2k 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
197 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 ...
1
vote
1answer
654 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
817 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
1k 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
75 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
26 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 ...
1
vote
1answer
383 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
2k 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 ...
1
vote
1answer
400 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 - ...
1
vote
1answer
187 views

Access Linked Tables and Their Network Connections

I need to know some simplistic details about how Microsoft Access' linked tables work. I think I know the answer, and this question is more about asking for a confirmation than anything else. A ...
1
vote
1answer
49 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 ...
1
vote
1answer
1k views

How Should TCP/IP be configured to allow an external application access to SQL via the same port #?

My SQL Server instance is hosted on an internal network server (10.x.x.x address). It's a named instance currently using dynamic ports. An external application at a third-party hosting location ...
1
vote
1answer
539 views

Possible reasons for slow BLOB updates in Oracle?

We have an application that transfers .bmp images as BLOBs to an Oracle table. One of the users of the app has complained that it is taking 2-3 seconds to transfer each image. Each image is ~1.2Mb. ...
1
vote
1answer
139 views

Change Oracle IP

If I change Oracle database server IP , what problem may exist and how to solve? modify hosts file modify tnsnames.ora file modify listener.ora file modify clients' tnsnames.ora files As I know ...
1
vote
1answer
429 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 ...
1
vote
1answer
883 views

MySQL Cluster over WAN: Best Architecture Options?

My company is looking at a multi-data-centre solution for high-availability, fun, and profit. We have businesses across the planet, with the need for MySQL database clustering solutions that can keep ...
1
vote
0answers
9 views

Connection Reset by Peer Socket Write Error - How to solve in SQL Server?

We have a vendor working on Java (JDBC) application saying they are getting the error "Connection Reset by Peer: Socket Write Error". They are insisting that the SQL Server (SQL Server 2012) is ...
1
vote
0answers
48 views

Network connection from old application to SQL Server 2008 R2 lost once in a while

I have put this question on serverfault.com as well, but since the problem concerns connecting to SQL Server, I will also put it here. We are trying to migrate an Axapta 2.5 database from SQL Server ...
1
vote
0answers
603 views

SQL Server Configuration Manager 2012 - TCP/IP, 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 ...
1
vote
0answers
504 views

SQLPlus times out when connecting to an Oracle XE database on another PC

I'm having the strangest issue. I have a very basic (I think) setup of an Oracle 11G database on one Hyper-V VM, and the Oracle 11G client on another VM. Although I'm able to access the database on ...
1
vote
1answer
487 views

High Network usage on SQL Server port [duplicate]

Possible Duplicate: Find out what queries are causing the biggest amount of network traffic We are getting over 90 Mbps from SQL Server to each web servers on port 1433. We are using ...