Ubuntu is a desktop and server operating system based on Debian GNU/Linux. Note that http://askubuntu.com is specifically dedicated to Ubuntu questions.

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4
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2answers
886 views

MySQL queries are 10 to 100 times slower after OS reboot

I have a MySQL server running on Ubuntu. If I restart the MySQL, everything is fine. If I however restart the OS, my queries take anywhere from 10 times to 100 times as long. The only "solution" to ...
0
votes
1answer
20 views

Problems to connect to an Oracle Database with SQLPLUS and URL-Variable, can somebody explain what I have to do?

I would like to connect to a ORACLE database via SQLplus. If I do it this way: sqlplus "user/pw@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP) (HOST=dbsrv01.desy.de)(PORT=1521))(ADDRESS=(PROTOCOL = TCP)(HOST = ...
2
votes
2answers
6k views

How do I install postgresql in Ubuntu?

I'm following these instructions, however I can only get to step 17.2. Despite installing postgresql successfully via the sudo apt-get install postgresql command, upon running initdb -D ...
3
votes
1answer
563 views

current_timestamp default column value working in Windows but not in Linux

This MySql query runs fine in Windows: CREATE TABLE `posts`.`table` ( `idTable` INT NOT NULL AUTO_INCREMENT, `Column1` DATETIME NULL DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY (`idTable`)); In ...
0
votes
1answer
302 views

Why does Oracle Database Configuration failed on ubuntu?

I'm trying to install Oracle Database 11g Express Edition on my ubuntu server. After running command: sudo service oracle-xe start I get following result after configuration: Starting Oracle Net ...
1
vote
0answers
120 views

Creating and connecting to a postgresql server on ubuntu 15.10

I have been struggling with creating a postgresql server that I can connect to externally (using pgadmin3). I am installing it on a virtual Ubuntu 15.10 x64 server. I have been following the guide ...
0
votes
1answer
230 views

ubuntu - Pm2 mysql high cpu usage [closed]

Not sure what is going on here but would love some help if any can. I am running on digital ocean 1GB ram ubuntu server a node.js application that is is launched with pm2 and that uses a mysql ...
2
votes
1answer
4k views

sqldeveloper ORA-12505. TNS: listener does not currently know of SID given in connect descriptor

There are similar questions asked and answered in this network related to the error message given in the question, however this problem is a little different from each. I have installed oracle 12c in ...
2
votes
0answers
21 views

how to convert mongodb(2.4.10) startup2 to primary

I have standalone bitnami mongodb(2.4.10). The output of rs.status() command is below : rs.status() { "set" : "test", "date" : ISODate("2015-11-13T08:07:41Z"), "myState" : 5, ...
0
votes
2answers
3k views

Freeware GUI tool for DB2 , usable in Ubuntu Linux [closed]

Are there any freeware user interface tools for DB2 to be used in Linux (Ubuntu 11.04)? RazorSQL is pretty good, but it's not freeware.
0
votes
1answer
225 views

Ubuntu broken need to recover mysql db

With a recent Ubuntu upgrade it has broken my system. I now only have access to the filesystem through a live CD. I had a MySQL database on the system with many objects and views I would hate to lose. ...
0
votes
1answer
25 views

Columnar & Row Oriented DB

In a previous question, I discussed some challenges with a row-oriented table. I have two tables in this application. The first table is well-suited for row-oriented operation; the second is ...
3
votes
2answers
6k views

Postgresql - Recovery using recovery.conf

I am trying to recover a database using recovery.conf file for making point-in-time copy. On recovery.conf file, I added a recovery target time as below. recovery_target_time = '2011-06-16 04:10:00 ...
1
vote
0answers
154 views

Mariadb alongside MySQL Can't start the MariaDB

I'm running MySQL on ubuntu 14.04 and it works great. For development and testing before switching between the two I want to install a separate Mariadb server. I followed this (old) tutorial: ...
0
votes
1answer
123 views

Restore MySQL Database with only .frm files

One of our servers (running Ubuntu 12.04) recently crashed during a power outage, and MySQL refused to start back up. After a lot of trial and error, I decided to completely reinstall it. Since I ...
2
votes
2answers
7k views

MongoDB service not working after upgrade to Ubuntu 15.04

I have recently upgraded my Ubuntu from 14.10 to 15.04. All features seems to be working fine except MongoDB. It is not controllable from service as we do normally in Ubuntu. sudo service mongodb ...
1
vote
2answers
2k views

Can't restore mysqldump database backup in Ubuntu 12.04

I'm trying to restore a database backup created using mysqldump. If I do: $ mysqldump -u ROOT -p DATABASE_NAME < DATABASE.SQL the database remains empty, even though I get some screen output ...
1
vote
1answer
380 views

How can I be sure if MongoDB is doing the balance?

I have the following structure: Two Ubuntu 14.04.2, both with MongoDB v3.0.4 instaled. Both in the same LAN. I want to make them work as a cluster. In the first one, that I call "MC1", I run the ...
2
votes
1answer
383 views

MongoDB installation Ubuntu 12.04 LTS errors

I need some help with my MongoDB installation on a clean, fresh Ubuntu 12.04 LTS server with no nonsense installed. I thought it would be a piece of cake, but I got some errors and the Ubuntu-forums ...
2
votes
1answer
3k views

Setting password for 9.3 PostgreSQL server [closed]

I currently have a 9.3 server running (on Ubuntu 14.04) with "trust" set as the authentification method in pg_hba.conf. How can I set the password again. In pgadmin the server currently doesn't allow ...
3
votes
2answers
7k views

Tool for Reverse Engineering of PostgreSQL Database on Linux (Ubuntu) [closed]

Please suggest a tool to reverse engineer a PostgreSQL DB into an entity-relationship-diagram (ERD) or equivalent ?? Ideally, I'm looking for a simple ERD or UML class diagram in a format that is ...
2
votes
1answer
333 views

Not able to install PostgreSQL 9.4 on Ubuntu

When I try to install PostgreSQL 9.4.+ on Ubuntu, it is installing version 9.3.9. I have used the following command: sudo apt-get install postgresql postgresql-contrib Then I have tried with sudo ...
2
votes
1answer
76 views

MySQL Memory & max_connections Performance Tuning

So, our site runs WordPress and in the past few days we have been getting tons of spam comments etc. I believe that we are becoming the victims of some kind of bot army that has been crashing our ...
3
votes
0answers
90 views

Recovering data from postgresql xlog

I lost a lot of data in my postgresql database and do not have a dump file to restore backup from, but I heard that in /var/lib/postgresql/9.4/main there are pg_xlog and pg_clog and that those ...
0
votes
1answer
869 views

MongoDB eats 100% CPU when idle

I am running in OpenVZ container with Ubuntu 14.04 LTS. MongoDB version: db version v3.0.4 git version: 0481c958daeb2969800511e7475dc66986fa9ed5 I use clean installation like described here - ...
0
votes
1answer
22 views

MySql DB from Ubuntu to RHEL

I would like to migrate my Mysql databases from Ubuntu to RHEL..what is the best way to proceed? I'm on community edition. I will be moving to entreprise edition of MySql on RHEL.
1
vote
1answer
66 views

Connecting to a remote Postgres 9.1 DB

I am running Postgres 9.1 on Ubuntu. I have host all all my.ip.address/32 md5 set in pg_hba.conf and listen_addresses= '*' set in postgresql.conf. Running show listen_addresses shows '*' Running sudo ...
3
votes
2answers
200 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 ...
4
votes
5answers
1k views

MySQL runs out of memory when importing innodb database

I have a small VPS with 512MB RAM and no swap (can't have any). I am importing a 1.5GB innodb database with mysql -u -p < database.sql Before the operation can finish it says : Lost connection ...
1
vote
1answer
40 views

Moving postresql 9.1 database - live

This question has probably been asked and answered before, and if so, I would appreciate if that could be pointed out to me. I have googled this point quite a bit, but I want to be very sure as to ...
1
vote
1answer
388 views

postgresql won't install dependencies

Please help me figure out why postgresql isn't playing nice with updating. I can't find anything on SO or Google that remedies this problem. This is a production server and a distribution reinstall ...
1
vote
1answer
278 views

mongodb 3.0.3 Ubuntu 14.04.2 AWS m3.medium Upstart PID mismatch

(Cross posted from stackoverflow, seems like this belongs here but 10gen link to stackoverflow explicitly from their site...) Is it possible to run mongod via upstart and keep track of the PID ...
3
votes
2answers
3k views

Install MariaDB without password prompt in Ubuntu

I need to install MariaDB server in Ubuntu without password prompt. For this purpose, I execute the following commands, but it doesn't gave me any progress. It again shows password prompt. I used the ...
1
vote
1answer
121 views

Install PostgreSQL using source code or using apt-get?

I want to install PostgreSQL on a server that runs Ubuntu 14.04.2 LTS. I understand that I have two options: 1) Install PostgreSQL using the source code distribution e.g., ...
0
votes
1answer
835 views

How to handle user with no password in postgresql

I installed postgresql but it's asking me for passwords that I never had and never entered. There is a postgres ubuntu user and a database user named moodle. Neither of these were created with a ...
1
vote
0answers
301 views

Can I export a PostgreSQL database from Heroku and Import as a PostGIS database in Digital Ocean?

Disclaimer: This may be a dumb question. This is honestly way over my head... one of the pitfalls of using Heroku for too long. I have a PostgreSQL database on Heroku. Now I'm migrating to Digital ...
1
vote
1answer
292 views

How do you grant permissions to a MySQL user using a shell script with variables?

I'm trying to create a provisioning script for Scotch Box (Vagrant) that will populate a database with seed content when I fire up the server. When I name the actual user, database, password, and ...
-1
votes
1answer
75 views

Switching from Oracle database to Ubuntu [closed]

I need support please. I am the CEO of a Life Assurance company. We are currently building our own core application under the leadership of my Head of ISD. We are using Oracle for our database and ...
5
votes
3answers
2k views

Install PostGIS v2 for PostgreSQL v9.2

I have installed the latest stable version of PostgreSQL v9.2 and I want to install the PostGIS v2 extension. I've been searching for it for 3 days now, however can't find it. I did however find ...
2
votes
1answer
480 views

Postgres 9.4.1 on Ubuntu 14.04.2 LTS fails to install properly

I'm trying to install PostgreSQL 9.4.1 on Ubuntu 14.04.2. I'm using the packages from apt.postgresql.org. The package installs but it fails running pg_createcluster. If I run manually, I get: ...
2
votes
1answer
723 views

MongoDB Replica Set: Can't Add Member/Connect

I'm building a MongoDB replicaset w/ three Ubuntu 14 servers. I'm connected to the primary server and authenticated w/ userAdminAnyDatabase and clusterAdmin privileges. When I run ...
0
votes
0answers
526 views

Mongodb 3.0.1 in ubuntu starts but status, stop or restart show 'mongo stop/waiting'

I am relatively new to Mongo and have installed 3.0.1 on a Digital Ocean droplet (Ubuntu 14.04 LTS). The database starts without problems but I am unable to 'sudo service mongod [stop/restart/status]' ...
0
votes
1answer
92 views

how to check and list all the files related to mongodb in ubuntu? I am looking for config files, password informations for mongodb [closed]

I installed the mongodb package in ubuntu using apt following the instructions on http://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/. I know that binaries are in /usr/bin/, and so on. ...
1
vote
2answers
237 views

MongoDb Upgrade from 2.6 to 3.0 Issue [closed]

For some reasons I cannot install MongoDb 3.0 version. What am I missing?
4
votes
1answer
3k views

Difference between mongod and mongodb upstart jobs

I just noticed that there are two possible ways to start mongodb: service mongodb start (uses /etc/mongod.conf) service mongod start (uses /etc/mongodb.conf) Can someone tell me what's the ...
0
votes
0answers
35 views

How do I alter my role to be a superuser?

I'm working my way through the steps in this slide to configure Postgresql & PostGIS. I configured my user role as directed on this slide. Note, the new role should not be a superuser. That ...
1
vote
2answers
130 views

How to Permanently solve MySQL error 2002 (HY000)

I have a problem on my cloud server with 2GB of RAM and 40GB Hard Disk that's hosting a Wordpress website that receives around 1000-2000 hits a day. My problem is that MySQL is always crashing and my ...
2
votes
2answers
3k views

Installing and configuring postgresql 9.3 on ubuntu 13.10 using puppet

I'm having some trouble getting postgresql[1] to install with puppet[2] on a blank ubuntu box. I need to install postgresql 9.3 on Ubuntu 13.10. Since postgresql 9.3 is apparently not in the official ...
0
votes
1answer
125 views

Why MySQL imports only one record for each table?

Code shows some info: $ cat /etc/*-release | grep VERSION 6:VERSION="12.04.5 LTS, Precise Pangolin" $ mysql --version mysql Ver 14.14 Distrib 5.5.40, for debian-linux-gnu (x86_64) using readline ...
1
vote
1answer
72 views

postgresql: accept subdomain wildcards?

I want to accept all db connections from servers with domain mydomain.com so that all subdomains like tiger.mydomain.com, venus.mydomain.com will have access to the postgresql server. I've read that ...