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

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1
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1answer
22 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 ...
2
votes
2answers
27 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 ...
2
votes
1answer
91 views

Is it ever ok to not test a feature? [closed]

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 ...
0
votes
1answer
35 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 ...
2
votes
2answers
28 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
votes
1answer
43 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 ...
1
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2answers
124 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
votes
1answer
51 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
votes
2answers
128 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
vote
1answer
35 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
votes
2answers
49 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
votes
1answer
54 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
votes
1answer
23 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 ...
1
vote
1answer
323 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. ...
0
votes
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 ...
0
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0answers
38 views

Can't see any services listed in Configuration Manager [on hold]

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 ...
2
votes
2answers
115 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
votes
1answer
28 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 ...
2
votes
2answers
405 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 ...
2
votes
1answer
506 views

When upgrading config servers to use WireTiger, the running config server with wiredtiger does not authenticate the existing pass and user?

In order to upgrade mongodb to 3.0.0, I am upgrading my config servers to use WireTiger. I followed the subsection of Change Config Server to Use WiredTiger. There are 18 steps. I run mongodump --port ...
2
votes
2answers
137 views

Current SQL Server services configuration

I know I can use SQL Server Configuration Manager to determine 1) Which services are currently running and 2) which services are set to auto start. However, I have several dozen servers I manage. I'd ...
0
votes
0answers
22 views

Creating mysql config setting per database

I am trying to setup MySQL so one database auto increments by 2. I am using the auto_increment_increment variable in my.cnf configuration file, but this is being applied to every database. I would ...
2
votes
2answers
66 views

Is Policy-Based Management dead? Is it scalable?

Policy-Based Management was introduced in SQL Server 2008. I'm looking for software/tool I can use to enforce configuration standards across a SQL Server 2012 /2014 database environment. Instances ...
0
votes
0answers
30 views

How to transform Streaming Replication Master-Slave to Cascaded Master-Slave1-Slave2 setup?

I've setup streaming replication as part of HA solution on my production enviroment. I've two ubuntu servers PROD1 and PROD2. PROD1 is master and PROD2 is slave. In case of failover the slave database ...
0
votes
1answer
182 views

MySQL: SELECT GET_LOCK slow/timeout

I am using "Zebra Session" as a replacement for PHP's built-in session management. Zebra Session stores sessions in a MySQL database, and uses "session locking" in order to ensure that data is ...
2
votes
1answer
227 views

Can I reduce MySQL memory usage, or do I need to add more RAM?

I have a VPS with 2.25GB of RAM. MySQL is using 1.4GB with only four users on my site right now. It seems to use this amount even when no users are online. The available memory of my server regularly ...
1
vote
1answer
34 views

Recommendations for my.cnf on MySQL Replicant

I have replication environment running in a master-slave configuration. The replicant is doing all writes and doing selects only very rarely - and none in which high performance is a requirement. ...
0
votes
1answer
81 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 ...
0
votes
0answers
369 views

Mariadb on Centos 7 not changing max connections based on my.cnf

The following configuration in my.cnf is not being followed. Max_connections go back to 151. please help as i have 16gb of dedicated ram that i would like to use properly. [mysqld] ...
0
votes
1answer
55 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 ...
1
vote
2answers
173 views

Mariadb refusing to read values on the my.cnf file

today i was optimizing my mariadb since my website was running too slow My machine is a Centos 7 , 4 gbs ram 3 cpu i runned a script called mysql_tuner.pl and the results were: -- MYSQL ...
4
votes
1answer
4k views

SQL Server service account Windows privileges and rights

My question is, if you create a new domain user account for each of the SQL Server processes, what permissions should be set for each account? Or does the SQL configuration manager actually take care ...
0
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0answers
163 views

Why mongod said “note: noprealloc may hurt performance in many applications”?

I just start mongod with config file: mongod -f /etc/mongod.conf In /etc/mongod.conf, I set storage.preallocDataFiles=true This is a part of config: storage: dbPath: "/data/db" ...
1
vote
1answer
393 views

How to add setParameter in mongod config?

When I am using setParameter in mongod config, I start mongod with error: Unrecognized option: setParameter = enableLocalhostAuthBypass=1 How can I use setParameter from config file ? P/S: I am ...
4
votes
3answers
749 views

TNS-12541 Error

I have grid installed in my pc but the problem is LISTENER does not start automatically. I have to start listener manually and then only LISTENER get started. But before starting listener if you check ...
3
votes
1answer
130 views

Trace Flag 3688 not working on SQL Server 2014

We are using some third party tools that fill up the SQL Server logs with entries like: SQL Trace ID 1 was started by login "sa". SQL Trace ID 2 was started by login "XX\xxxxx". SQL Trace stopped. ...
0
votes
0answers
54 views

What should be the ideal network configuration for a Postgresql Streanming Replication and PgPool HA setup

I have the following configuration using Pgpool, Postgresql with streaming replication. Pgpool is used for load balancing and automatic failover. .-----. .--------. | | ...
2
votes
1answer
146 views

SQL Hard Drive Config?

I am setting up new server and am a little confused in my research of HD configuration. My main question is : Is it recommended to have the Trans Logs and DB logs (ldf) on separate spindles or can ...
0
votes
0answers
61 views

Required Information to start oracle warehouse builder

I am using windows 8 64 bit . I want to install Oracle Warehouse Builder on my system. I have installed Oracle 11g and come to know that Warehouse Builder is already a part of it. But when I start ...
5
votes
1answer
321 views

Restarting database server or just the database

I am an application programmer. We have a SQL Server 2012 instance that hosts many related databases (around 12 databases). The vendors did some changes to one of the database and the application and ...
0
votes
1answer
26 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 ...
3
votes
4answers
2k views

SQL Server 2008: how much RAM memory should SQL Server use in a 8GB RAM server?

We have SQL Server 2008 and 8GB RAM in a customer, hosted in a Windows 2008 R2 SP1, and consider the following amount of free memory: and consider the following running programs: Scenario: ...
0
votes
1answer
510 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 ...
1
vote
2answers
4k views

Oracle Database 12c on Oracle Linux 7 - autostart, enabling connection as sysdba

I've installed 12c on Oracle Linux 7 for my development work, as per document Oracle Database Installation Guide 12c Release 1 for Linux (E41491-10). My previous experience with administering Oracle ...
1
vote
1answer
43 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 ...
6
votes
2answers
921 views

Transaction speed benchmarks for mySQL v5.6 replication - seems very slow

I'm trying to select the best configuration for our new infrastructure but got a bit confused about the results. I used sysbench v0.5 for the tests: prepare data sysbench ...
0
votes
0answers
115 views

pgpool authentication failed when use syslog in log_destination

When I configure in pgpool.conf file: log_destination = 'stderr' pgpool run ok, but when I use this configuration: log_destination = 'syslog' I get this error: pgpool pgpool[21477]: pcp_child: ...
1
vote
2answers
450 views

Very high load avg for MySQL database [closed]

I have a backend server which response to my clients app, it has more than 20k~25k hit per second and this make my server load average very high, I believe that my MySQL config is not appropriate. In ...
0
votes
0answers
66 views

MySQL Enterprise Monitor - Query Analyzer configuration problem

I'm using MySQL 5.1.69. protocol_version 10 version 5.1.69-log version_compile_os redhat-linux-gnu I have a problem with configuration/using MySQL ENTERPRISE MONITOR. I don't see data in ...
0
votes
1answer
135 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 ...