A widely-used open-source operating system that is particularly popular on servers.

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Mongodb is taking up 7GB of hard drive space on VM, how do I fix?

I am running Debian on a VM. I installed mongodb and it is taking up A LOT of space. It is really slowing me down in college, with work and projects ... etc. I have a disk usage analyzer and I've ...
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1answer
20 views

Is it possible to uninsall MySQL-5.6 and install MySQL-5.1 on RHEL 5

I have installed MySQL-5.6.x community edition on RHEL5. It was running fine. Since, it is my testing server. To find the differences in execution timing, I have to install the MySQL-5.1 community ...
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1answer
14 views

How to disable HTML output in mysql console?

I've used several mysql instances on many servers, but this one had a suprise for me tonight when I tried to use its console for the first time : me@MYSERVER:~$ mysql -H my_base (....) (...) Server ...
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6 views

Problems with PostgreSQL and ESRI Geoportal Installation on CentOS

I am installing geoportal 1.2.4 on CentOS from the command line terminal...during my installation I am receiving a fatal ident error message for my user geoportal. The pg_hba.conf file has been ...
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2answers
36 views

PostgreSQL/ Linux, way to have DNS forward to a port/cluster?

Aws linux(centos) ec2 Host: mydb. 10.10.10.10. 3 clusters: ports 5432, 5433, 5434 What I'd like to see is: db2.mydb or mydb/db2 connect/fwd to cluster2 (5433). Anything Linux or psql come to mind? ...
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2answers
33 views

Getting error while running dbca command as oracle user on linux, please help me on this

could someone please help me on the below error to get ride of it: [oracle@localhost ~]$ dbca UnsatisfiedLinkError exception loading native library: njni11 java.lang.UnsatisfiedLinkError: ...
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1answer
56 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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50 views

Dedicated mysql server slow response [closed]

I have server in Kimsufi with 2gb RAM but my server is very slow , with simple hosting in ovh it responds quickly ... With pingdom.com test i have for server: 10 sec and simple hosting: 2sec is ...
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2answers
37 views

BASH: DBCA: command not found

When I use dbca command as Oracle 11g user I have the following error message: BASH: DBCA: command not found and when I checked the bash profile I found the following: # .bash_profile # Get ...
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1answer
32 views

MySQL 5.1: change datadir variable value in my.cnf

Below is my system configuration: OS: RHEL5 MySQL: 5.1.73 Default datadir=/var/lib/mysql/ But, the above directory has space crunch. So, I decided to change the path. I found /u000 directory has ...
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1answer
22 views

Unable to create Central Inventory

I am Traying to install Oracle 11g on my Linux a have alrady config the varible and X-host but can,t able to Create Central Inventory my Central Inventory location is : /u01/app/u0 ** and ...
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1answer
89 views

Error ORA-12560 when trying to connect Windows SQL*Plus client to Oracle 11g Linux server

I installed 11g on Centos VM on my mac.I have everything up and working on server.I have included following command I ran on cenos. $lsnrctl status LSNRCTL for Linux: Version 11.2.0.1.0 - Production ...
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0answers
10 views

Can it Possible to do Mysql Active - Active Replication between Redaht linux 6.4X and Ubuntu 12X?

I have small doubt regarding Mysql Active-Active Replication. Can it Possible to do Mysql Master-Master (Active-Active) replication in Mysql between Redhat Linux and Ubuntu? Thanks & regards, ...
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1answer
48 views

Issue working with Postgres on Windows

I am running PostgreSQL 9.3 on my machine. I have PhpPgAdmin running on a cloud, using which I exported the database I am supposed to be working on, selecting "Structure and Data" and "Download". ...
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1answer
24 views

SQLite and Write Ahead Logging: why so large files

I have been doing some operations on SQLite databases recently. The other day I ran a command to DELETE a bunch of rows from a 1GB database file and the WAL file got over 8GBs at which point it ...
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1answer
40 views

SQL2542N - No match for a database image file was found based on the source database alias

I'm trying to restore a DB from a Linux system to a Windows. I'm working with DB2 9.7.7. I want to create a new DB with the restored DB. The DB file has this name: ...
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1answer
58 views

Master-Master Replication Duplicate Key

I have set two servers master-master replication mysql , i manage to set successfully but the problem is the duplicate key i got MASTER 1 Configuration /etc/my.cnf [mysqld] server-id=1 bind-address ...
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3answers
124 views

External authentication using Oracle Standard

I want to authenticate my client connections externally, using a custom external application. Is this possible using Oracle Standard 11g? If so, how? (our custom external application will not have ...
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1answer
41 views

Mysql can't write to filesystem

I need to output some queries as csv files. The directory is in the webroot and I want it to be writable by apache too, so I'm trying to add mysql to the www-data group (on Ubuntu). I thought this ...
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1answer
43 views

temp table (#sql-7a87_230c32.ibd along with its .frm) still exists on slave

I executed some alter statements on my master server, which have been successfully executed on master (now there is no temp table on master) and all alter also have been replicated on slave server ...
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25 views

compare time difference between current time with last data timestamp

I have a data server recording data every second. i need to setup a cron job that that runs a script that can give a reply if the now() is 24 hours more than the last data recorded. So that I can ...
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19 views

10.2.0.5 RAC instance running on Linux-64 recieved KEWRRFC: Remote Flush slave Failed, return code: 2

Last Friday one of two instances in our 10.2.0.5 RAC cluster was non-responsive after logging the following messages. We ended up rebooting the node and it came up successfully. While I will likely ...
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27 views

Mysql DB recovery

Mistakenly I have deleted "ibdata1" file in mysql server. Now my database is not working. All the tables are corrupted. But still I have "ib_logfile0" and "ib_logfile1" files.Also I have a recent ...
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1answer
42 views

How to call the unix Sendmail from oracle

I know that is possible to send mails using the oracle-db by UTL_SMTP, and there are several examples of such usage everywhere. My question is: Can I call the GNU/Unix/Linux Sendmail to perform a ...
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1answer
35 views

Mysql database recovery in linux

Is there anyway to get back database if I deleted database. Is mysql creates temp file which contain temporary data from database and whether I can recover from that Edited: cp my.cnf my.cnf41 mv ...
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34 views

MYSQL backup options using mysqldump and mysqlbackup

I'm currently using mysqldump to backup mysql database. I heard that mysqlbackup offers a much much better performance. Unfortunately it requires MySQL enterprise version which is pricy. A few ...
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1answer
45 views

Mysql Queries cause high load in server

I have problem in the database ,here is phpmyadmin status queries --------------------+ ...
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1answer
291 views

MySQL Workbench Cannot start SSH tunnel manager

I don't know why this error is happening when I try to connect by MySQL Workbench. Cannot start SSH tunnel manager. I'm using slackware 14.1 and installed all dependencies. I already installed the ...
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0answers
79 views

PostgreSQL refuses to listen on IP [closed]

This was a case of PEBKAC. By default, the listen_addresses line in postgres.conf is commented out. I failed to notice this and remove the comment. I'm trying to get a PostgreSQL 9.3 server up and ...
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4answers
71 views

Move MySQL database to another server

I need to move 20 Gb MySQL database from on Debian server to another. The problem is that there is no way to create its backup since there are almost no free HDD space on the source server. What would ...
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1answer
41 views

Lost connection to mysql?

We're receiving the following error on every 1 hour. Lost connection to MySQL server at 'reading initial communication packet', system error: 115 "Operation now in progress" Any clue ?
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2answers
59 views

MySQL: How to avoid case sensitivity in SQL queries when migrate from Windows to Linux?

I have migrated my Database from Windows to Linux server. In many places, query has been written without focusing their cases (uppercase / lowercase). So, these queries are not getting executed and ...
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1answer
119 views

high background flush avg mongodb

similar question: High Global Lock % on Mongodb Overview We have a production setup replica set in v2.4.8 mongodb running on five 4-core, 28gb RAM VMs with standard azure datadisk HDDs running on ...
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1answer
82 views

InnoDB engine is not loading after tuning parameters

After installing MySQL-5.1.73, I placed default my-huge.cnf into /etc/my.cnf and started the mysql service. It was running without any issue. Now, I tunned some parameters in /etc/my.cnf file. Below ...
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0answers
25 views

Switching from Windows to LINUX server with lower configuration

As of now, My application is running on dedicated windows DB server which configuration is below: RAM 8.00 GB Processor Intel(R) Xeon(R) CPU X5460 @3.16GHz, OS Windows Server ...
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1answer
50 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
95 views

How to create and start a PDB for RCU in Oracle 12c

So I've made a fresh install on a virtual machine based on OEL 6.5 x64. All my installs are in /opt/apps I installed a Oracle Database 12c, with the Desktop Version selected (not server), UNICODE ...
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1answer
44 views

Mongodb replica sets: why does my master server occupy more disk space than my slave?

I have two servers on my replica set. Let's call it the master and the slave, for the purpose of this discussion. The master was the original one, and the slave was replicated from that master. At ...
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1answer
48 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
18 views

Unable to start mysql

I am using Oracle LINUX5. I installed MySQL 5.1.73 community edition through RPM command and it was working. Now, I stop mysql by running below command: $ mysqladmin -u root -ptmpassword shutdown I ...
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1answer
75 views

Report Builder cannot publish to report server

This is currently in a cloud lab environment. We're not allowed to join any AD domains. We have a linux server (RHEL 6) running MySQL 5.3 and a Windows SQL Server 2012 on Win 2k8 R2. Our laptop is ...
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101 views

MySQL - Out of memory: Kill process 3046 (mysqld)

We run a MySQL (v5.6.17) dump backup every 4 hours, and today noticed: Apr 19 20:09:30 mysql1 kernel: Out of memory: Kill process 3046 (mysqld) score 970 or sacrifice child Apr 19 20:09:30 mysql1 ...
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1answer
153 views

MongoDB on Raspberry Pi --dbpath not setting

I installed MongoDB using this tutorial. I have tried to set --dbpath in /etc/mongodb.conf like this: dbpath=/path/that/iwant #where to log logpath=/var/log/mongodb/mongodb.log logappend=true ...
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votes
1answer
57 views

MySQL ran out of space, now won't start

So the partition MySQL was mounted on ran out of space. As a quick fix, I decided to move mysql's data directory to /home/minecraft/mysql/. I then changed the datadir in the config to the correcy ...
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4answers
625 views

PostgreSQL 9.3 on Ubuntu Server 12.04 v.s. MS SQL Server 2008 R2 on Windows 7 Ultima

I have searched many articles in Google about the performance of PostgreSQL vs MS SQL 2008 R2 and found that many of those articles say the performance of PostgreSQL is better than that of MSSQL 2008 ...
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1answer
224 views

Unable to Start PostgreSQL. kernel's SHMMAX parameter exceeded you limit

When I am trying to start my PostgreSQL I get the following error in the Postgresql.log file: FATAL: could not create shared memory segment: Invalid argument DETAIL: Failed system call was ...
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1answer
25 views

Which version of linux OS has support for MongoDB installation?

I would like to learn how to install MongoDB in my Windows machine. Currently I have a Windows 8 64 bit OS laptop and I installed MongoDB 64 version for Windows. My question is: which version of ...
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1answer
77 views

Make Oracle backup files available for duplicate

I have a Red Hat Enterprise Linux server with Oracle 10.2.0.5 and a database on it (SID is TNATEST). I have a remote CentOS server with Oracle 10.2.0.5 on it that I want to duplicate TNATEST to. The ...
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1answer
56 views

MySQL - prevent OS cache for query

On high load production server I have many sql selects which are unique or re-use will be in hours. I use SQL_NO_CACHE but this queries are still cached with OS cache. Server have 64G ram and used ram ...
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0answers
43 views

Can I set a lower_case_table_names value for a specific database?

I'm running a MySQL 5.5 on Linux (Debian 7) with several databases. I need to import a database originally maintained in Windows MySQL using sqldump. My issue is that this database is used by a ...