The choice of settings for hardware, firmware, software or other components of a database system.

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2answers
41 views

Is there a policy or special server configuration to limit SQL Server query results?

I have been seeing developers using SELECT * FROM table when testing their queries. The issue is that many developers are executing such SELECT statements on huge tables, which slows down SQL Server ...
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1answer
182 views

MySQL Cluster MaxNoOfConcurrentOperations and RAM

Why increasing of MaxNoOfConcurrentOperations lead to higher consumption of RAM? I need high value for fast filling tables with some random data, but i noticed that my datanodes are swapping at ...
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1answer
911 views

How to set bytea_output to hex?

I cannot seem to change bytea_output to hex. I have tried this method: ALTER DATABASE dbname SET bytea_output TO 'hex'; I have tried to edit postgresql.conf bytea_output = 'hex' and restarted ...
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1answer
91 views

What does this mean - ~/.my.cnf

When I run $ mysqld --verbose --help | less I got information like Default options are read from the following files in the given order: /etc/mysql/my.cnf /etc/my.cnf ~/.my.cnf As per my ...
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1answer
419 views

exception: hosts cannot switch between localhost and hostname

I created a replication set. I added localhost in the set in the beginning, but when I try to edit the member with the actual hostname. I get error "exception: hosts cannot switch between localhost ...
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1answer
787 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 ...
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1answer
238 views

DB2 DBM paramter NUMDB has value 8. Should I change it to 1 because I have only one database?

Hello I am using IBM Maximo application which is using DB2 database and I have created only one database. I heard that when paramtere NUMDB has value 8 it will divide all values in DB CONFIGURATION ...
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1answer
1k views

Where is the MySQL variable - innodb_flush_method?

I would like to tweak the value of innodb_flush_method to find out its performance impact on a database server. That variable is listed when I run the command SHOW VARIABLES. But I could not find it ...
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1answer
894 views

Length of LOB data (%1) to be replicated exceeds configured maximum %2

We recently hit this error shortly after enabling replication on a table. Length of LOB data (%1) to be replicated exceeds configured maximum %2 I've found solutions to this problem already: ...
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1answer
309 views

Installing Sphinx on Mac OS with XAMPP

We have: Sphinx 2.0.3 Mac OS 10.6.8 XAMPP 1.7.3 (with MySQL 5.1.44) Here is PATH: user:sphinx-2.0.3-release user$ echo $PATH ...
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1answer
603 views

Oracle change initialization parameter with “deferred” keyword

The description of deferred and scope keyword is listed below (extracted from Oracle documentation). The meaning of them gives me an indication that deferred can just use the memory scope. Is my ...
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2answers
4k views

Can't connect to/from SQL Server 2008 from my Windows 2008 server

I have a server with: Windows 2008 Server SQL Server 2008 enterprise From my server using SQL Server Management Studio, I can't logon to any SQL Server and vice verse, I can't connect to my SQL ...
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1answer
41 views

Mathematical or Computing Alternatives for MySQL Combination Queries operating toward their Performance Limit

We regularly run a contest that is becoming quite popular. In the contest, we need to select the combinations of contestants from 8 groups whose cost is under a threshold, and who combined have the ...
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1answer
104 views

MySQL configuration to connect to multiple local applications [closed]

I've installed FreeRADIUS, MySQL and FreeRADIUS management (a web-based app) on the same machine, with both FreeRADIUS and FreeRADIUS management using same user to connect MySQL. My problem is when I ...
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1answer
620 views

Can you see other users' session variables in MySQL?

In MySQL, Using SHOW GLOBAL VARIABLES gives the ability to see global variables. SHOW SESSION VARIABLES are the variable settings for that session. Is there a way to see the SESSION variables of ...
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2answers
118 views

Changing the SQL Server service account - any additional considerations?

I have inherited a few instances that are running under LocalSystem. I need to change this to a domain account as we are changing our backup strategy to go to a network share and then to tape and I ...
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2answers
4k views

Create database fails with Microsoft SQL Server Error 5133, Operating syste, error 5 (Access is denied) [closed]

I just installed SQL server 2012 on Windows 2012 today. After the install, I changed the database settings to create database files in f:\mssql instead of the default. i verified the confired and ...
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0answers
37 views

SSIS 2008 Connection Managers (Project Specific) and Corresponding Configurations

These are the requirements that I want to complete: a. I want the package to only use connection managers that are project/not package bound. b. I also want these connections to be bound to the ssis ...
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0answers
2k views

Troubleshooting a SQL Server instance that won't start

I've had a problem with one instance of SQL Server 2008 (the free version) not starting automatically. I always have to right click on the icon in the task bar and start it manually. It is set to ...
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2answers
232 views

Multiple database servers for performance vs failover

If I have two database servers, and I am looking for maximum performance vs high-availability, what configuration would be best? Assuming the architecture is two load-balanced web/app servers in ...
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0answers
42 views

Is there a canonical list of MySQL defaults which should be changed

I'm setting up a new mysql server as we're building a new app at work. Most of the developers/operations guys are familiar with mysql. Many of mysql's settings (eg strict mode) are set badly by ...
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0answers
498 views

How to customize Place Order Functionality In Magento? [closed]

In Magento, when any customer buys product from front-end, then at last customer goes through order placing. According to my need, I have created one CUSTOM TABLE in Magento database. So my ...
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1answer
60 views

What are the compelling resons to update SQL Server name to a real one after its changing?

Took the job of monitoring and tuning a few dozens SQL Server 2012 Enterprise Ed. SP1 (64 bit) on Windows Server 2008 R2 Standard Ed. running inside virtual machines. All of them on running ...
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1answer
102 views

Config settings in MySQL so that it saves data on disk monthwise/yearwise

I have billions of rows in my MySQL table. So when I do a select for a specific date range , it takes minutes to return results, or sometimes even hangs up. Is there any config settings in MySQL so ...
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1answer
121 views

MongoDB - temporarily turn shard to standalone for local user creation

Following question Mongodb sharded cluster backup user issue I have a sharded mongodb cluster, with 4 shards, and I'm required to stop the mongod service on each shard, and start it not as a part of ...
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1answer
170 views

How to set isolation to SERIALIZABLE DEFERRABLE for a whole Postgresql database? [closed]

I think read somewhere that it was possible to configure a Postgresql database to force all transactions to be SERIALIZABLE, but I can't find that document anymore. In fact, I would like to force the ...
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2answers
3k views

My.cnf with 64GB RAM

May the following my.cnf file be fine for a dedicated server with 64GB of RAM (on Debian)? I'm running just one website on the server and on high load data insert in some table takes centuries...it ...
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1answer
274 views

How can lots of ram (128 GB) be used to improve MySQL 5.5 index creation?

This is similar to another post of mine, but now I have a different table structure, and it's still unclear what MySQL parameters should be changed to take advantage of the extra ram my machine ...
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2answers
959 views

Oracle database uses wrong parameter file

When I try to startup my Oracle database I get the following error: LRM-00109: could not open parameter file '/opt/app/oracle/product/11.2.0/db_1/dbs/initjicdbaex.ora' The /dbs directory in my ...
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1answer
119 views

New Database vs New Table for User Registrations

Here's an example, there is this application that completes a task (mostly data-enrty stuff). Users can sign-up on a website to begin using the application straight away. At the moment, I was looking ...
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1answer
314 views

Why doesn't more memory necessarily make Postgres more performant?

The Postgres resource consumption docs state, under the shared_buffers: ...it is unlikely that an allocation of more than 40% of RAM to shared_buffers will work better than a smaller amount. Why ...
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1answer
1k views

Centos 6.2 mysql configuration file help

I have a new centos 6.2 setup. Below is the configuration file. The machine is going to be fully innodb and it had 8Gb ram. What else must I include in the .cnf? [mysqld] datadir=/var/lib/mysql ...
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1answer
21 views

Restore of db's on local locks me out of accessing other sites

Running my local dev websites on my Mac locally and when I am restoring a database via terminal, which the restore is running I cannot access anything that uses mysql, I get a broken pipe notice. Is ...
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1answer
46 views

SQL Server Service's Log On As account

I just inherited a set of new servers and whoever set them up left the "Log On As" account as the default "NT Service\MSSQLSERVER". I'd like to change that over to an Active Directory service name. I ...
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1answer
50 views

Help with MySQL my.cnf config

So I'm running MySQL on a high availability cluster with the MySQL data directory on a GlusterFS. I want to: - Disable the query cache (--query-cache-size=0) - Switch on external locking ...
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1answer
22 views

Error on mongos server

Firstly,I am new to mongodb. when we executed the below command on mongos server. /usr/bin/mongos --configdb X.X.X.1:20001,X.X.X.2:20002,X.X.X.3:20003 --port 27017 --chunkSize 1 we are getting the ...
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1answer
265 views

Mysql Server 5.6 Mysqld high memory consumption

I have MySQL Server 5.6 installed in a development machine with these specs: RAM: 4 GB Windows 7 Professional 64 bits Intel Pentium CPU G630 @ 2.70 GHZ Since I installed the MySQL Server, the ...
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1answer
91 views

Clarification on MySQL Workbench Options File Configuring

When in the MySQL Workbench tool, configuring the "Options File," I see a drop-down in the lower right corner with the options: client mysql mysqld By default, 'mysqld' is selected and I see my ...
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1answer
226 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 ...
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2answers
2k views

When should I NOT set the Maximum Server Memory option in SQL Server?

In SQL Server, I normally set the Maximum Server Memory setting to one of the popular best practices, such as leaving 10% or 4GB, whichever is higher. ...
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1answer
460 views

Difference between [mysql] and [mysqld] in MySQL configuration file

There are multiple sections in MySQL configuration file: [mysql] [mysqld] [myisamchk] [mysqld_safe] [mysqlhotcopy] [mysqldump] [client] I found that same variables with different values have ...
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1answer
58 views

Database Configuration In DB2 and Oracle

what is the equivalent in Oracle for these field (taken from DB2)? Interval for checking deadlock (ms) (DLCHKTIME) Lock timeout (sec) (LOCKTIMEOUT) Thanks,
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2answers
6k views

Can't backup a Postgres database: FATAL: Peer authentication failed for user “postgres”

I can connect to my database no problem remotely, either from PHP scripts on our webserver or using PGAdmin3. Unfortunately, when I try to run pg_dump backups locally on the server itself, I get: ...
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1answer
174 views

Does failed task considered to be run to completion in SQL Server maintenance plan terminology?

The replies to my previous question: "How to specify a SQL Server maintenance plan subtask to run unconditionally on success or failure of preceding tasks?" answered me that I should change ...
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2answers
1k views

MySQL Cluster - Table is full [Error 1114] while still creating tables

I am trying to forward engineer a MySQL Workbench model with about 100 tables to a development single-node cluster and, while creating the 51th table, I end up getting a "1114 table is full" error, ...
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1answer
421 views

MySql - set my.cnf location at server start

I want to have two MySql servers running on the same system (for master-slave replication tests purposes). To be able to do this I need both servers read different my.cnf files. As I see at startup ...
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1answer
1k views

Cannot Login after configure oracle-xe [closed]

I already success install oracle-xe on my ubuntu 10-04, tried to configure the port and password sudo /etc/init.d/oracle-xe configure, and then restart my computer and go to http://127.0.0.1:8080/apex ...
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0answers
39 views

SQL Server consuming large amount of RAM [duplicate]

I have Server 2012 with two 2.10 Ghz processors and 64GB of RAM. I have SQL server 2008 installed on this server. but this SQL server is consuming 70-80% of memory. I have limited SQL memory to 24GB ...
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0answers
16 views

Can't see any services listed in Configuration Manager

I am using SQL Server 2014 and am logged in my desktop as my user account with admin rights. When opening Config Mgr, I do not see any services listed whatsoever. Could this be an issue that ...
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0answers
76 views

MongoDB does'nt starts after changing the data directory

I have installed a mongodb instance using yum..Now everything works fine.I started the service using service mongod start,it works good.Then i changed the data directory and log path in the ...