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11
votes
3answers
9k views

What can cause a mirroring session to timeout then failover? SQL Server 2005

We have two production SQL Servers running SQL Server 2005 SP4 with cumulative update 3. Both servers run on physical machines that are identical. DELL PowerEdge R815 with 4 x 12 core CPUs and 512GB ...
6
votes
4answers
372 views

How to troubleshoot orm queries interfering with other applications

Well, it's hypothetical scenario but what I'm trying to understand is the path to go from a post-morten log (say, an SQL Server Profiler trace) to identify the code on a ORM situation. To make it not ...
4
votes
3answers
5k views

sleeping SPID blocking other transactions

I'm really having trouble tracking down some blocking we are experiencing. The root blocking SPID's status is 'sleeping', the cmd is 'AWAITING COMMAND', and the sqltext is 'SET TRANSACTION ISOLATION ...
4
votes
1answer
81 views

How can a connection for one DB block a connection to another DB in SQL Server?

We have an interesting scenario. For weeks, we have been experiencing 'outages' on SQL Server 2008 -- where our websites have slowed to a crawl and mass timeouts for all customers who have DB's ...
4
votes
1answer
268 views

Troubleshooting Postgresql spatial query failure. Next steps?

We have a set of spatial queries that are failing and I'm struggling with troubleshooting them. I suspect that we're running into some bug, but I'd like to nail things down a bit better so as to be ...
2
votes
2answers
503 views

How to configure data collection in SQL Server 2012?

In SSMS of SQL Server 2012 Enterprise on Windows Server R2 Standard, each time I am trying to set sub-option "On demand" of option "Non-cached - Collect and upload data on the same schedule" of Data ...
1
vote
1answer
768 views

Clients timing out with no apparent reason

I have a SQL Server 2005 server that's been running fine most of the time. Today the users started to get time outs when opening new connections, including myself when I tried to open another tab on ...
0
votes
2answers
52 views

Signal wait always high

I'm not sure if this is the right place to ask this question, so apologies in advance if not. Problem I'm facing is: One of my server's signal wait floats at around %35 and won't go down. Top 3 ...
0
votes
1answer
54 views

MySQL Performances Issues

I'm in debate with my database admin. He claims that my queries I'm sending through PHP are the problem and he is stating several things I believe are completely false. To begin I have a site ...
0
votes
1answer
172 views

MySQL: How to clean MySQL from RHEL5?

I have installed MySQL 5.1.73 community edition through RPM. It was working fine. I uninstalled this version by using yum remove mysql-server command. I wanted to upgrade MySQL from 5.1.73 to 5.6.19 ...
0
votes
1answer
72 views

MonetDB ODBC driver memory allocation error on Windows

The driver is the latest from a month ago: 2014-SP2: 11.17.17, 64-bit. Windows is Server 2012. I have limited options to test whether earlier versions of the driver would work or this version works ...
0
votes
1answer
8 views

Record in table won't show in form

I have an Access 2010 database that has "frmCatalog" which is sourced from the Catalog table. The Catalog table shows a record with the primary key "Acq" = "5203." But the form does not show 5203. ...
0
votes
0answers
12 views

High bandwidth on virtual IP

Description of the environment : An apache server (Drupal) connected to mysql server using a virtual IP. The problem : The (outgoing) bandwidth on VIP has exploded (after a new site version ...
0
votes
0answers
41 views

Probable database replication issue in LAMP setup with Master/Master MySQL replication

I have been facing issues in my high availability failover (on WAN links) LAMP setup hosting a Drupal CMS based site, approximately after every 2 months both servers suddenly stop responding to http ...
0
votes
0answers
55 views

Enumerate open oracle connections

How can I troubleshoot which processes are keeping connections open? Background: A QA installation of several software components is generating an ORA-12516 error now and then, and I'm not sure which ...