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4
votes
1answer
685 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 ...
0
votes
1answer
860 views

Connect to Oracle DB 9i using SSH TUNNEL via putty

I am trying to connect to an Oracle database behind NAT. Therefore I create an ssh tunnel using putty. This is the network information: global IP example: 122.54.34.12 LAN IP example: ...
0
votes
1answer
74 views

Access Database that is shared with my company on a network drive..When I copy and paste it to my desktop there linked some how?

I have an Access Database that is shared with my company on a network drive..When I Click on the drive and copy and paste it to my desktop and make changes to it the database that is on the drive also ...
-1
votes
1answer
17 views

PDO over network, hangs MySql Database after running 1 to 3 hours? [on hold]

I have the following class --------------------------------------------- CRUD Code Snippet-------------------- class CRUD{ function __construct(){ $this->db_user = "user_name"; ...
0
votes
0answers
10 views

Domain Inventory Powershell Script [migrated]

I'm working on a code for my companies office to help maintain better inventory of our computers and their capabilities/hardware. This is what I have written, Basically use Wmget to pull info off the ...
1
vote
0answers
24 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 ...
2
votes
1answer
147 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) ...
3
votes
4answers
6k 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 ...
11
votes
3answers
686 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 ...
0
votes
1answer
33 views

Does SQL Server handle databases on SMB shares different than on Hard Drives?

Does it, for example, automatically recover from network hiccups, perhaps? If so, would masking the file share under a symbolic link change that behavior, or does SQL support symlinks to file shares, ...
1
vote
1answer
33 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 ...
0
votes
0answers
16 views

Database for large dynamic network graph - best practise?

I am constructing a MySql database which is to contain data for a large network graph. There will be thousands of nodes and ten thousands of edges. The nodes and edges will be assigned a category. ...
1
vote
2answers
185 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
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: ...
0
votes
1answer
39 views

When I convert the linked tables to local tables I got this error?

Referential integrity cannot be enforced between linked tables and local tables. Enforcement of referential integrity will be dropped on all relationships between tables converted to local and tables ...
2
votes
1answer
282 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?
0
votes
1answer
556 views

How to resolve “Error log file size is increasing in mysql 5.5” issue w/o restarting mysql

I have an Ubuntu server with MySQL 5.5 installed. In /var/lib/mysql a .err file is kept on updating with these warnings only: [Warning] IP address '234.22.11.221' could not be resolved: Temporary ...
0
votes
1answer
56 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 ...
0
votes
0answers
35 views

Migrating a SQL NetName Between Clusters

Instance A is a default SQL Server 2005 instance on a two-node Windows 2003 cluster. Instance B is a default SQL Server 2012 instance on a two-node Windows 2008 R2 cluster. The application team is ...
0
votes
0answers
62 views

Enable Oracle network encryption

I have to enable network encryption on a specific instance. We have a single DB machine runnning one listener from /etc/listener.ora and several instances. TNS_ADMIN is set to /etc. Oracle 11.2g is ...
1
vote
1answer
244 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
0answers
424 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
1answer
167 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
574 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
125 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 ...
2
votes
0answers
567 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
votes
1answer
244 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 ...
1
vote
1answer
1k 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 ...
7
votes
3answers
2k 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
votes
1answer
67 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 ...
3
votes
3answers
2k 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 ...
1
vote
0answers
397 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
votes
1answer
370 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 ...
0
votes
2answers
512 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 ...
2
votes
1answer
4k 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 ...
1
vote
1answer
431 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. ...
0
votes
2answers
937 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
votes
1answer
1k 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
1k 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 ...
1
vote
1answer
283 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 - ...
2
votes
0answers
501 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
2answers
303 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 ...
1
vote
0answers
217 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 ...
3
votes
1answer
1k 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
votes
1answer
1k 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
vote
1answer
71 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 ...
2
votes
2answers
5k 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
vote
1answer
751 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
votes
1answer
4k 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 ...
24
votes
2answers
8k 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 ...