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21
votes
3answers
14k views

Why multiple PTR records in DNS is not recommended?

I often read that using multiple PTR records in a DNS configuration is not recommended. However, the reasons are often vague, or not so obvious, naming: "it can cause problems", "can trigger ...
18
votes
3answers
15k views

How do I remove a specific bad plan from the SQL Server query cache?

We have one particular SQL Server 2008 query (not a stored proc, but the same SQL string -- executes every 5 minutes) that intermittently caches a very bad query plan. This query normally runs in a ...
17
votes
18answers
33k views

Are there any good and lightweight LDAP querying tools? [closed]

As developers we sometimes need querying LDAP. Do you know useful tools for this task? edit: I don't mean in code, I mean utility/tool (command-line or gui, mostly gui) for just to look/confirm data, ...
13
votes
10answers
69k views

Command line active directory query email address for username

On Windows XP in an Active directory environment - what is the easiest way for me to query a user's email address from AD given their username on the command line. (Assuming I know where it is kept ...
9
votes
3answers
17k views

How to automatically kill slow MySQL queries after N seconds?

I am looking for a well tested bash script (or alternative solution) to do so, in order to avoid max_connection to be exhausted. I know that it is fighting the symptoms, but really need such script as ...
7
votes
1answer
376 views

BIND - increase in outgoing NS queries after upgrade to CentOS 6.7?

After upgrading BIND to 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6_7.2 in a few caching nameservers I've noticed it's doing lots of outgoing NS queries, without changes to incoming traffic volume or patterns. ...
6
votes
2answers
3k views

best practice for fixing mysql slow query log error 13

CentOS 5.5 MySQL 5.5 installed via a yum repository [ERROR] Could not use /var/log/mysqld.slow.log for logging (error 13). Turning logging off for the whole duration of the MySQL server process. ...
5
votes
3answers
9k views

DNS searching with wildcards?

Anything like nslookup or dig offer the ability to search based on something contained in the name ... like a wildcard search or something? I'm trying to make a little script with a GUI wrapper for ...
5
votes
2answers
201 views

Effects of internet connection speeds on server queries

Can my internet connection significantly effect queries run on phpmyadmin? I am currently 18 down and 30 up. I switched internet connections today and noticed a deep drop in query performance. The ...
5
votes
4answers
15k views

Why are my MongoDB queries really, really slow?

I've inherited a large MongoDB server at work, and have been tasked with figuring out why queries run against it are so slow. The DB contains tons and tons of records (on the order of 10^9) and takes ...
4
votes
3answers
6k views

Importing a large SQL script into SQL Server?

I'm trying to move a database from our production server to our test server. I've used Microsoft's Database Publishing Wizard to create a script containing the schema and data for the production ...
4
votes
2answers
779 views

What is the most efficient way to add a lot of data to a mysql database?

I have a batch of data that needs to be added to a mysql database every day consisting of about 100K queries. START TRANSACTION; INSERT IGNORE INTO info (Created, Modified, MType, Pform, Name, ...
4
votes
2answers
17k views

bind would not work unless allow-query is “any”

I have this in /etc/named.conf, I commented the default values and set my own under it. My domain would not load in browser unless I set allow-query to "any", is this OK, what should I edit? If is ...
4
votes
2answers
2k views

Estimating MySQL Query Runtime

I ran a MySQL query from command line using the following: nohup mysql --user=root --password=XXXXXXXXX database < report.sql > results.tab This query is extensive (5000 lines) and running a ...
4
votes
1answer
2k views

SCCM query for cluster (virtual) name

I'm trying to determine if the cluster name is stored in SCCM audit data. I see the host name in [v_R_System], and I'm able to identify cluster nodes here. What I need is the virtual name for the ...
4
votes
1answer
136 views

SQL Azure insert query ten times slower on V12 than V11?

I noticed performance degradation about two weeks ago impacting one of our applications with an SQL Azure backend. It's running on V12 on tier S1 90% of the time, sometimes scaling to S2, S3 or P1. ...
3
votes
1answer
739 views

How to make BIND behave differently depending on query source?

How would one make BIND behave differently depending on the source IP address? For example, I want to use different forwarding DNS servers for different people on my network.
3
votes
2answers
4k views

Zabbix - Populate Item with SQL Server Query

I'm trying to track a process that locks up regularly. It's a funky program that we have no control over. I'm trying to find a good way to track when the program stops responding. I have a query ...
3
votes
1answer
263 views

Active Directory lookups from bound Mac without user credentials

One of my Mac boot scripts needs to grab a property from AD that is not one of the ones I can see with the built in tool called dscl, which is pretty much limited to Users, Groups, and Computer ...
3
votes
1answer
167 views

Should I be suspicious of this querystring?

I noticed in my application event log some errors: Exception message: A potentially dangerous Request.QueryString value was detected from the client (term="DT&#304;NST32") Request URL: http://...
3
votes
1answer
291 views

Expensive LDAP queries from Workstations

Troubleshooting high LSASS process on a DC found expensive queries originating from a few workstations. Each query is as follows: Visited Entries: 1Million+ Returned Entries: <50 (most of the ...
2
votes
3answers
159 views

How to filter a LDAP query for users which are authenticated? [closed]

I want to check if a user is authenticated right now for my Windows domain. For that I want to use an LDAP query. I learned that there is a group "Authenticated Users" (S-1-5-11) which might do the ...
2
votes
1answer
837 views

SCCM - Query Powershell Version

I am trying to create create a query in SCCM to show how many computers are installed with the different Powershell-versions. I suspect we have a mix of v2,v3 and v4, but I need to know how many and ...
2
votes
1answer
1k views

How do I query members of an Exchange distribution group using LDAP filter syntax?

I'm trying to use a couple of Exchange distribution lists for access to an application (the list, due to the culture at this particular enterprise, is kept more up to date with people moving in and ...
2
votes
1answer
222 views

SCCM Collection Query- FullName

I found this page about using usernames to build a sccm collection query. http://jengeek.blogspot.com/2014/07/creating-sccm-collection-from-list-of.html?m=1 This works great! However, the list I ...
2
votes
1answer
3k views

Search AD for empty sAMAccountName & userPrincipalName

I'm in the process of implementing a User privilege management solution and it needs to audit all users within our AD. It's currently falling over due to an account which has two blank attributes: ...
2
votes
1answer
18k views

SCCM 2007 Query for installed software versions

How can I write a query to find machines which installed office 2003 with Sp3 in SCCM 2007? Thanks,
2
votes
2answers
611 views

A more useful MySQL Query log that's suitable for tail -f'ing

In order to debug a webapp and mysql queries, I've enabled the mysql query log. However it's not a very good format to tail and grep through. Ideally I'd like to be able to only show queries from a ...
2
votes
1answer
113 views

pl/sql Oracle syntax

I have a query in pl/sql that i need to migrate to ms sql. select count(*) from table1 t1 where (conditions1) and (conditions2) and variable = t1.column1(+) Could anyone tell me what the (+) after ...
2
votes
4answers
3k views

Query DNS for multiple domains at once

I have recently moved servers and want to query all of the accounts domains on the new server to check that they are all resolving to the correct NS. I am currently using http://www.whatsmydns.net/#...
2
votes
1answer
234 views

SCCM 2007 query to select users belonging to listed AD groups

Can somebody advice me on WQL query to select all users from specified AD groups? I tried to do this through query builder but without success. I'm going to use these selecter user to further select ...
2
votes
1answer
17k views

SCCM how to check installed software versions?

How can I write a query to find machines which installed office 2003 and office 2010 in SCCM version 4.00.6487.2000? I don't have the collection for the PC anymore. It was deleted when we thought ...
2
votes
2answers
1k views

Can IP tables allow specific DNS queries based on domain name?

I have iptables blocking all UDP traffic at the moment, however I want to allow only certain DNS queries to get through. Let's use google.com as an example. I am trying to use string matching to ...
2
votes
1answer
3k views

how do I list Distribution Group (List) and their members inside of an OU using AD or exchange 2010

our entire domain has thousands of distribution groups, while i can use the script referenced here: How to get a list of all Distribution Lists and their Members in Exchange 2007? to pull all ...
2
votes
3answers
2k views

Retrieve list of users/groups that have access to a network folder and its subfolders?

One of our users is requesting a list of the users and groups that have access to two folders on the network, as well as all of the subfolders of both of these folders. There are hundreds, if not ...
2
votes
1answer
3k views

Handler_read_rnd is too high (more than 2GB)

I am running an advertising program and there are some SELECT, UPDATE and DELETE queries when showing ads. Sometimes, displaying ads is fast but sometimes it is too slow. At this time, it is slow and ...
2
votes
1answer
195 views

Simple SQL Server 2005 Replication - “D-1” server used for heavy queries/reports

We have two SQL 2005 machines. One is used for production data, and the other is used for running queries/reports. Every night, the production machine dumps (backups) it's database to disk, and the ...
2
votes
0answers
27 views

WMI Query - First and Fourth IP octet

Is anyone aware of any WMI queries that could be used within group policy which only lists all IP address, which end in .200 and I have multiple sites, multiple networks, I only need to list the ...
2
votes
1answer
138 views

how to optimize postgresql81 for a hug query but not a complicated one?

i have a query which execution takes 15s on the server. the server is bi-xeon 5130 (2GHz) with 2GB of RAM and 160GB of scsi hardrive in RAID. Database is PostgreSQL 8.1 on Debian 4 etch. This query ...
2
votes
2answers
146 views

MySQL query times for tuning are different every time

I am tuning SQL query time for my slow query but every time I get different times so I can't evaluate my optimize solution. For example, I run query select * from abc where abc.status in (x,y,z) and ...
2
votes
1answer
173 views

SQL server Intergration services 2008 sub queries

I am looking for a way to execute sub queries from within a main query that I execute in my SSIS package. So When I execute the package, I want to be able to execute the sub query after everyline ...
1
vote
3answers
277 views

Can you make MS Sql Server reject all queries matching a certain pattern?

I would like to know if you can make Sql Server look at incoming query strings and reject ones that match a certain pattern. In other words, for a certain class of queries (perhaps identified by a ...
1
vote
3answers
760 views

Perfectly reproducable select statement default ordering issue

I've recently been chasing an issue with a client's db... solution found, but impossible to recreate. Essentially, we're doing a Select * from mytable where ArbitraryColumn = 75 Where MyTable has ...
1
vote
1answer
3k views

AWS CLI Command Line: How to use “--query” to output multiple source lines

I am using aws-cli version 1.7.8 to get the --query output to create one record that is derived from multiple lines. In this case I am trying to get specific information from describe-instances. In ...
1
vote
3answers
739 views

Need to fetch result of only one column from the MySQL status variables

I wanted to fetch only the value from status variables. Suppose the query is show status where Variable_name='Aborted_clients' It returns +-----------------+-------+ | Variable_name | Value | +...
1
vote
2answers
2k views

Event logs on multiple server [closed]

I am looking for tools that will allow me to aggregate and query event logs from multiple servers. In my case, this is a webfarm and I need to be able to query the event logs for all of them in one ...
1
vote
1answer
165 views

Bind9 how stop to answer specific queries?

How I can make Bind9 to stop answering specific types of queries, let say NULL, WKS or TXT? Thanks in advance.
1
vote
2answers
13k views

Event Log > Filter Current Log > XML > where EventData contains text

I'm trying to search through the windows event log for anything where the event data contains the string TCP Provider, error: 0 as part of a longer error message. To do this I created the code below: ...
1
vote
4answers
579 views

why this statement in oracle perform much slower then ms sql

I tried to run a simple test to see how the speed fair between oracle and Ms Sql as follow: populate two tables with 2 million records, cross join them, filter by a range, and do a sum. Both table ...
1
vote
2answers
53 views

Any solution for MySQL Servers to avoid rendering them unresponsive when running big queries?

I do run several mysql servers for several clients, there is a common problem I used to see. When I run some big query against big databases, for example: I have a MyISAM table with several fulltext ...