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

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Mysql server does not start if binary logging is disabled

I have been trying to disable binary logging on a slave server, since I do not use it as a master for another one, I have no use for the logs and I am trying to reduce lag so cut out everything that ...
2
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1answer
285 views

Checkpoints are occurring too frequently during pg_restore

Under PostgreSQL 9.2.2 (Windows 32 bits), I have a pg_restore command that systematically results in log warnings about the checkpoint frequency, for example: LOG: checkpoints are occurring too ...
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1answer
111 views

Is there a setting in MySQL that will allow you to see the columns of a table on a query, even if the table is empty?

When I am writing code to go with a certain MySQL query, I like to do a basic select statement to see the columns, and to perhaps see what data is available as a sample. Sometimes, the table I would ...
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0answers
23 views

How to stop MySQL Workbench screens from staying on top

I have MySQL Workbench. I am doing multiple things at the same time - when one app is processing or doing something, I am working with another application. Workbench however when it's doing ...
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2answers
812 views

SQL Server max memory, page file, max degree parallelism

Three questions hope you DBA masters of the universe can answer: I know it is best practice to set SQL Server's max memory. So if a server with 44 GB RAM has SQL Server installed we should set the ...
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1answer
85 views

Why is a max degree of parallelism 1 recommended and used for Sharepoint in SQL Server?

I am new to Sharepoint, but I used to work with SQL Server a lot. I realized that Sharepoint changes some of the SQL Server settings to non default values. One is the max degree of parallelism, why ...
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2answers
115 views

Postgres takes a lot of RAM (cached)

I have a small database PostgreSQL (v9.3) on Centos 6 x64 ( RAM: 8 GB ). postgresql.conf max_connections = 512 shared_buffers = 3000MB temp_buffers = 8MB work_mem = 2MB ...
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86 views

Can't read config files from pgAdminIII on local Kubuntu machine

My database starts fine, I can connect to it from pgAdmin and run queries. However when I go to Tools->Server Configuration->postgresql.conf I get an error. The error states could not stat file ...
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2answers
131 views

Setting max server memory in SQL Server 2014 [closed]

I have a SQL Server 2014 Standard Edition server running Windows 2012 R2, with 128GB memory. I'm attempting to configure SQL Server to use max memory of 96GB, but it appears to not be working. It is ...
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0answers
66 views

changing mysql configuration . Getting errors like Table is marked as crashed and should be repaired

On Our server I have done following configuration for Database: [server has 2 core, 2 GB ram and windows 2008 operating system] query_cache_size= 32M [Old] query_cache_size= 50M ...
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0answers
30 views

SSAS - what could I monitor in SSAS to fine tune its memory settings?

This question is a follow up from the SSAS - what could be a good starting point for memory settings? What and how can I monitor the server resources in order to best identify the settings that I ...
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1answer
117 views

SSAS - what could be a good starting point for memory settings?

I have received the following alert regarding memory settings of SSAS: Alert: SSAS 2014: Invalid TotalMemoryLimit Configuration Source: MSSQLSERVER Path: SASBI01Alert time: 9/15/2015 5:38:50 PM ...
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1answer
172 views

Performance problem after migration from SQL Server 2005 to 2012 [closed]

Last Friday, I migrated a SQL Server instance from 2005 Enterprise Edition to a brand new Windows Server 2012 server with SQL Server 2012 Enterprise Edition installed. Since then, users have started ...
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1answer
43 views

optimise my.ini for key query

I have a database system with a fairly complex dashboard query. First of all the details. Data model: DROP TABLE IF EXISTS `contract`; CREATE TABLE IF NOT EXISTS `contract` ( `id` int(11) NOT ...
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2answers
1k views

Listing SQL Server instance startup parameters

I have a server I have just restarted and verified which trace flag are active using DBCC TRACESTATUS: Trace Flag : 3688 Function: Removes messages to errorlog about traces started and stopped ...
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0answers
40 views

SQL Server on big machine falls over inexplicably

We've been doing some throughput testing with our web application. The production application resides on a couple of machines in the amazon cloud, consisting of a web server and a database server. ...
2
votes
1answer
437 views

RAID 10 array configuration for SQL Server

I have a question regarding RAID 10 and SQL Server. My plan is to purchase an HP DL380 G9 with the 24 drive config. The question is how to break up the array. The drives will be divided between the 3 ...
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0answers
38 views

What are the built-in default configuration values of redis.conf?

If I omit a configuration option in redis.conf, what value will be used upon running redis? The self-documented redis.conf states that just rarely. I have found (but didn't try yet) this command: ...
6
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3answers
283 views

Slow query performance due to temporary file?

Here is the query: SELECT "products".* FROM "products" WHERE (status > 100) AND "products"."above_revenue_average" = 't' AND ("products"."category_id" NOT IN (5)) ORDER BY ...
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0answers
45 views

Design of hard drive RAIDs

My task is to reconfigure a main server that houses the company's applications and data. The server is capable of handling everything. I wanted to find out if anyone has a suggestion on the best ...
4
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1answer
522 views

Oracle Database 12c: Unable to resize system tablespace

Problem: My java application is returning ORA-01691: unable to extend lob segment errors for every insert Cause: After running: SELECT * FROM dba_tablespace_usage_metrics ORDER BY used_percent ...
5
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3answers
217 views

Virtualize SQL High CPU

This is a client environment which needs significant overhaul so all I am trying to do is slow the bleeding. Situation CPU is getting crushed, often 80% or higher utilization VMWARE 5.5, Windows ...
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1answer
107 views

Oracle 11g PGA advice view is empty when it shouldn't

I have the following situation in an Oracle 11g server (it's part of a RAC). PGA_AGGREGATE_TARGET is set, STATISTICS_LEVEL is TYPICAL, and yet V$PGA_TARGET_ADVICE shows up empty. Why does this happen? ...
5
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1answer
73 views

To minimize Cache misses in PostgreSQL?

You can calculate cache misses as described here. However, I am interested in how to minimize the phenomenon in PostgreSQL 9.4.3 on x86_64-unknown-linux-gnu, compiled by gcc (Debian 4.9.2-10) 4.9.2, ...
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2answers
61 views

How do I define the frequency of my mongo backup

I want to know if there is a way to define in Mongo the frequency of backups have to be executed. There is any config file for that? An example will be excellent!! UPDATE I want to create a ...
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2answers
842 views

How do I create a Mongo config file to allow access to http on port 28017

Well I want to configure the mongo server to allows access for http. I put this on my mongo config file: port = 28017 rest = true And when I restart my mongod service and try to access I got this ...
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2answers
1k views

Secondary and Arbiter stuck in Startup

I'm using MongoDB version 3.0.0. I'm trying to setup mongodb replication on our machine. Replication was initially setup but due to some changes on the VM the entire thing crashed. When I tried to set ...
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1answer
40 views

MySQL connectivity error

I have a MySQL database on a Linux server that I am able to access through putty logging into servers terminal. When I try to connect to the MySQL database remotely, I get the error: Lost ...
0
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1answer
52 views

Setting shared_buffers over 320 MB prevents Postgres from restarting

I'm running Postgres 8.1 on a CentOS 5 system with 4 GB of RAM. Whenever I set shared_buffers above 320 MB, it won't run. I've checked SHMMAX and it's at 4294967295 which is the max allowed for a ...
2
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0answers
20 views

Should mongodb be run in a service, or a worker cluster?

I'm trying to implement an architecture that's similar to the coreos's production architecture (shown below) Should I run the database as a central service or one or more of the workers? I figured ...
2
votes
1answer
180 views

Mysql high cpu usage - cpanel

After an update from whm, I see a high CPU usage from MySQL (5.6). my.cfg: [mysqld] slow_query_log=1 slow_query_log_file="/var/lib/mysql/slow-query.log" long_query_time=1 skip_name_resolve ...
1
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1answer
46 views

What does Oracle XE perform during installation?

I have oracle11g2 installed on my noteobook. I then installed the Oracle Database 11g XE. Now a .dll which uses the oracle11g2 client does not work anymore. First I recogniced that I had now two ...
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2answers
950 views

How do I limit Oracle's memory use?

I would like to use Oracle's automatic memory management, with a limit of around 4GB. (Past experience has shown this to be plenty for my dev PC and that it is easier to get an idea about any ...
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2answers
245 views

Is it ever ok to not test a feature?

Is there any point at which you become so familiar with your language/database/system that there is no need to test a new feature/configuration/query/etc. by contained/simulated testing before ...
6
votes
2answers
512 views

Should I use ReFS for a new SQL Server?

We are in the process of building a new production Windows Server 2012 R2 server to run SQL Server 2014 Enterprise Edition. There is a bit of advice on the internet that suggests for Windows Server ...
0
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1answer
1k views

Mysql - unknown variable 'table_cache=64'

I use Mamp Pro 3. I upgraded Mamp's MySql to 5.6.24 using this script https://gist.github.com/tobi-pb/b9426db51f262d88515c. After that I ran the Mamp Pro and MySql cannot be started. So I looked the ...
3
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2answers
346 views

Setting shared_buffers in postgresql.conf does not seem to take effect

We're on CentOS release 6.6, PostgreSQL version 8.4.20. (Yes, this is not bleeding edge.) In postgresql.conf, we have: shared_buffers = 4096MB kernel shm values are set nice and high: [root@green ...
0
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1answer
234 views

Non-Replicating commands from (master) Mysql 5.5.40 to (slave) MariaDB 10.0.19

CRUD replicates just fine. But we noticed that DB structure altering commands such as ALTER TABLE and/or adding/updating columns to a table and even creating new ones do not replicate to the slave at ...
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2answers
368 views

TempDB default number of files in SQL Server 2016

Noticed the docs for SQL Server 2016 CTP2 state "by default, setup adds as many tempdb files as the CPU count or 8, whichever is lower." ...
0
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1answer
872 views

could not open log file “/var/log/postgresql-2015-05-24_181212.log”: Permission denied

I installed postgresql from source on Ubuntu 14.04 (I also installed from repositories too before, I just want to get a feel for both of them right now, as I will heavily rely on this database). So ...
2
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2answers
398 views

Mixed SQL Server instances with static and dynamic ports

Let's assume someone has 5 different SQL Server instances running on a server. Initially all are using dynamic ports. Is it safe to restrict one of those instances to use the static port 1433 while ...
1
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1answer
54 views

Increase memory limit when server is stopped

There was a local SQL Server 2012 instance. Once memory has decreased to critical 128 MB and then has stopped by me. I can not start it (idea: not enough memory). Is it possible to increase this ...
0
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2answers
189 views

Best configuration for MySQL? InnoDB and MyISAM

I read that InnoDB is supposed to be better at writing into MySQL than MyISAM, however, I'm trying it out, by running 3000 MySQL queries(Inserting rows, 8 Columns + id)... but results haven't turned ...
0
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1answer
1k views

how do I configure postgresql to find the pg_controldata command [closed]

I am trying to execute the pg_controldata command, I got the error command not found. Then I checked: ls -l /usr/lib/postgresql/9.4/bin/ | grep "control" -rwxr-xr-x 1 root root 25960 feb 5 18:24 ...
0
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1answer
25 views

Remote connection to DB instance from fresh formatted system?

I have 1 win7prof fresh system. Now I want to connect to a DB instance remotely via sqlcmd/any other way. My req is to connect and execute select query? is there any method/software needed to be ...
2
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1answer
5k views

Cannot connect to SQL Server from Management Studio (both 2012)

I installed SQL Server 2012 Express. It seems to be running fine. My SQL Server Configuration Manager looks like this: From what I understand it means that my instance is called MSSQLSERVER. ...
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0answers
41 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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1answer
49 views

Where do I set the I/O size for DB2 9.7 LUW driver (AIX 6.1)?

I am looking to change the I/O size returned from the DB2 server for query results. (As per below instruction from SAP BODS 4.X performance optimization guide) Increase the size of each I/O from ...
4
votes
1answer
628 views

Moving DB Log destination?

I currently have SQL DB and Log files going to the same drive. I would like to move the Log files to their own drive. Is there an easy way to achieve this and will it require downtime/reboot of the ...
0
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1answer
39 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 ...