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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 ...
2
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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
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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?
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1answer
84 views

XML Network Call to Application from SQL Server 2005

We don't really have a DBA here, just a semi-experienced SQL Developer and me. I've only got about a year's experience myself and we're the only programmers for our small business. We're trying to ...
1
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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 ...
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1answer
837 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
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1answer
2k 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
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1answer
264 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 ...
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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: ...
0
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1answer
539 views

Clients require instance name to connect to clustered instance

We have a clustered instance, say Instance1, assigned its own virtual network name and IP, via Failover Cluster Manager. This instance is configured to listen on port 1433 in SQL Server network ...
2
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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 ...
8
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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 ...
0
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1answer
91 views

Is SERVICE_NAME forced to be unique per logical database within a network? Would it have sense the opposite?

I like to know your opinion on these two sentences to see if I understood correctly the concept. Put RAC configuration aside, I am talking about logical databases, I understand RAC is like a group of ...
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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 ...
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0answers
691 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 ...
12
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1answer
437 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 ...
1
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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 ...
4
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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 ...
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1answer
696 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. I'...
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2answers
1k views

Creating a New Database Across a Network with SQL Server 2008 R2

I appreciate that the above should not be done ('Creating a New Database Across a Network with SQL Server 2008 R2') for all of the reasons outlined here but a client wants to know how to do this and ...
2
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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. :...
1
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1answer
592 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-...
3
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2answers
470 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 ...
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0answers
355 views

Sybase anywhere sql server connection problems

in my work we have a software system based on sybase adaptive server any where version 6 installed on a windows server 2008. the system work fine but after a period of time from system start problems ...
4
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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 ...
2
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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 ...
1
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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 ...
6
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2answers
12k 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 ...
1
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1answer
1k 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 ...
4
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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 ...
28
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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 ...
2
votes
1answer
247 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
152 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 ...
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
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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 ...
4
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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, ...
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votes
3answers
982 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. ...