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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ORA-29327: unsupported client compatibility mode used when talking to the server

I have application created in Spring, using Hibernate. The problem is that the application has this error during working with database: ORA-29327: unsupported client compatibility mode used when ...
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1answer
44 views

2ndQuadrant BDR installation not working anymore

I previously used the following to install BDR (9.4) on Ubuntu: echo "deb http://packages.2ndquadrant.com/bdr/apt/ trusty-2ndquadrant main" > "/etc/apt/sources.list.d/2ndquadrant.list" wget --...
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8 views

MongoDB Initial Sync failing repeatedly

I have a one member mongod instance (Server1) with a very large DB with 2.5 million documents (Each document is very big) and 4 indices. Then I added another machine (Server2)to this replica set. ...
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2answers
23 views

Invoke --data-checksums using pg_createcluster on Ubuntu 14.04

How do you pass the initdb argument for data checksums to pg_createcluster when creating the initial cluster? Passing the argument as per initdb fails for me: pg_createcluster --data-checksums --...
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1answer
18 views

Why doesn't MySQL installation on an Ubuntu linux 16.04 OS require user to specify LD_LIBRARY

Why doesn't MySQL installation on ubuntu 16.04's linux require the user to specify LD_LIBRARY_PATH to resolve its runtime dependencies? I tried googling to find the answer to this question, but I ...
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1answer
23 views

MySQL innodb_log_file_size change is not being recognized

I am trying to set the innodb_log_file_size option in a MySQL 14.14 (distrib. 5.6.30) installation on Ubuntu 15.10 to solve an issue (importing a database with large BLOB fields) however the log size ...
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1answer
19 views

Oracle Database Remote Connection

I've been searching online for a solution to my problem without any luck. I'm trying to connect to a remote server (~ 700 km of distance), but since I'm new in this Database administration world I'm ...
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0answers
42 views

Set private key password for mysql using ssl

2016-05-09T20:05:05.772747Z 0 [ERROR] SSL error: Unable to get private key from 'server-key.pem' 2016-05-09T20:05:05.772764Z 0 [Warning] Failed to set up SSL because of the following SSL library error:...
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2answers
19 views

How to restore postgres database which is created using pg_dumpall?

I have dumped all of my databases using pg_dumpall and now I want to restore them. I used the command psql -f db.out postgres, but I am still not able to see my databases. Can anyone help?
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1answer
38 views

Shared memory error while connecting to Oracle

I get this error message each time I try to connect to my Oracle XE local database under Ubuntu 15.10 : user@user-X220:/u01/app/oracle/product/11.2.0/xe/network/admin$ sqlplus SQL*Plus: Release 11.2....
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11 views

Is it mandate to turn off huge pages in Mysql 5.6

Folks, Is it required to turn off huge pages in Mysql 5.6 server under /sys/kernel/mm/transparent_hugepage/enabled -> To never? We have a heavy transactional database and calling the data segments ...
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0answers
14 views

postgresql service fails to start after bad reboot

I have a postgresql 9.3 running on Ubuntu 14.04. For some reason, my fellow developer rebooted the server and since then postgresql service is failing to start. Also, the reboot didn't go smooth as it ...
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0answers
5 views

Ubuntu: How to soft-link to the latest version of PostgreSQL CLI tools [duplicate]

I have just upgraded my RDS PostgreSQL version from 9.3 to 9.5. In order to access the server, I need to upgrade the Ubuntu CLI tools as well. I have upgraded the tools using the apt.postgresql.org ...
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1answer
21 views

Incomplete installation with unsupported locale

I was installing postgresql on Ubuntu 12.04 (Digital Ocean droplet). The locale variables in my environment gets transported to the DO box. When postgres is installed via apt-get install postgresql, ...
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2answers
55 views

scaling options for mysql on linux vm (ubuntu) : how to scale when the RAID 0 is out of space

I was asked to give a scaling road map for our mysql database. Currently, I have a single mysql instance v5.6.28 running on an ubuntu VM on azure. It has a (software) RAID 0 disk made with two 1TBs. ...
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0answers
36 views

ERROR 1 (HY000): Can't create/write to file (Errcode: 13 - Permission denied)

I've been struggling for a couple of days with this now and have been trying to use this thread amongst other google searches to resolve it but can't seem to get it to work. When I run this SELECT ...
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1answer
133 views

Server warnings on MongoDB startup

I recently installed MongoDB on an AWS EC2 instance running Ubuntu. When I'm starting the MongoDB service, I get some warnings: $ mongo MongoDB shell version: 3.0.11 connecting to: test Server has ...
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60 views

How to do rolling upgrade MariaDB 10.0 -> 10.1 on ubuntu 14

I'm trying to figure out how to do a rolling upgrade of our galera cluster running on MariaDB on Ubuntu 14.04. In testing, the first node I upgraded started complaining about the timestamp column in ...
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106 views

virtualbox ubuntu 14.04 MySQL access denied for user 'root'@'localhost'

I removed the mysql-server on the virtualbox ubuntu by running : sudo apt-get --purge remove mysql-server and re-installed it, but I still get Access denied with or without password when trying to ...
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1answer
55 views

My MySQL Server Died

Approximately 1 time per week my MySQL server is shutting down. This is what the log looks like: 2016-03-18 13:46:25 13166 [Warning] Buffered warning: Changed limits: max_open_files: 1024 (...
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1answer
87 views

NLS_LANG AL32UTF8/UTF8 for oracle database

I recently install a new database oracle on ubuntu using this tutorial. But a get an error oracle@ubuntu:/home/bruno$ echo $NLS_LANG /u01/app/oracle/product/11.2.0/xe/bin/nls_lang.sh oracle@ubuntu:/...
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339 views

How to fix: MySQL job failed to start

background: i installed mysql server on my ubuntu 14.04 aws ec2 server a few nights ago, configured it following guides from reputable sites, and populated it w/ ~80 million rows. a few times, I ...
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0answers
25 views

MySQL 5.5 client SSL connection only works when adding cipher list argument, why?

I set up the packaged MySQL server 5.5 and client on two Ubuntu VM. I configured the server to support SSL. I can connect to the server with the MySQL CLI tool between the VMs, but the connection is ...
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35 views

How to fix the MySQL 5.6 System.Security.Principal.WindowsIdentity.get_User () not implemented exception in Linux?

I would like to know if programmatic intervention is necessary to fix the following C# Runtime exception when running MySql 5.6 Connector.NET on Ubuntu Linux 15.10 instead of Windows 7. Error ...
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33 views

MySQL [Warning] IP address could not be resolved

my Server runs good, i have mysql/mariadb + amavisd-new and postfix running but i have in my logs bunch of Feb 23 11:13:55 localhost mysqld[32633]: 160223 11:13:55 [Warning] IP address '104.217.216....
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52 views

Need help with corrupted MySQL database

I could use some step by step help on using innodb to hopefully recover a corrupted MySQL database. We are running moodle on a ubuntu server which uses the LAMP stack. The database has been corrupted ...
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0answers
384 views

MySQL 5.7 + Ubuntu 14.04 eating up my RAM

I've recently installed MySQL 5.7.11 in my Ubuntu 14.04.3 system following these instructions: http://dev.mysql.com/doc/mysql-apt-repo-quick-guide/en/ Being totally empty and not being called by any ...
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1answer
51 views

I would like to emulate the Microsoft SQL Server function GetSqlBinary() in MySQL version 5.6

I would like to emulate the Microsoft SQL Server function GetSqlBinary() in MySQL version 5.6. The C# namespace System.Data.SqlClient implements GetSqlBinary(), which is like fetching a blob.But the ...
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0answers
45 views

move a postgres cluster to another machine

I have a postgreSQL 8.3 cluster I should move onto a new machine which runs postgres 9.3 (Ubuntu 14.04) . First of all I copied my whole cluster and I pasted into /etc/postgresql/9.3/<...
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3answers
59 views

Getting error while starting mysql by just typing in mysql terminal

I am getting an error while starting mysql, by just typing mysql in the terminal: The error is: amtz@amtz-VPCEA23EN:~$ mysql ERROR 1045 (28000): Access denied for user 'amtz'@'localhost' (using ...
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1answer
65 views

Could I set my InnoDB MySQL Server session state for SQL_SAFE_UPDATES and INNODB_FLUSH_LOG_AT_TRX_COMMIT?

Could I set my InnoDB MySQL Server session state for SQL_SAFE_UPDATES and INNODB_FLUSH_LOG_AT_TRX_COMMIT using MySQL Workbench's SQL Query window or MySQL Connection Navigator instead of in a c# Mono,...
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1answer
139 views

How to use SSL/TLS between server and client with Postgres?

I don't know much with it comes to security. I'm deploying a virtual machine with my database in a cloud service. I would like to encrypt all the communication between this server and any clients. How ...
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2answers
25 views

how to set mogodb in upstart service with authentication in mongodb way

I set username and password in MongoDB every time I have to run this command in terminal: sudo mongod --auth --port 27017 --dbpath /var/lib/mongodb As soon as I close terminal, MongoDB db also ...
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47 views

Configuring MySQL Cluster

I'm having trouble in configuring my data nodes. My setup is 1 management node, 1 SQL node and 2 data nodes. I'm running mysql-cluster-gpl-7.4.8-linux-glibc2.5-x86_64 on my cluster. My question is do ...
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0answers
158 views

Server Doesn't Listen Error when connecting to PostgreSQL from Client

I have done a lot of research through the Google and have not been able to come up with a solution. I installed PostgreSQL 9.5 and PostGIS 2.1.8 On Ubunutu Server 14.04 and configured PostgreSQL as ...
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0answers
155 views

How to fix postgres stuck in recovery mode?

I have Jira and Confluence installed in a server. We didn't have any free disk space one day, and these services didn't started correctly, so after deleting some files we now have some free space ...
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2answers
349 views

Filesystem tuning for PostgreSQL

I want to install PostgreSQL 9.x version in an Ubuntu 14.04 workstation and I'm looking for a recommendation on how to set it up in order to get a good read-write (50/50-balance) performance keep a ...
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0answers
39 views

Problems with MariaDB - won't resync nodes - Can we build a good diagnostic set of instructions?

I have a 3 node ubuntu server MariaDB cluster using rsync, which keeps coming un-synced. When it happens I try to add it back in, reboot, and try again, try again with bootstrap... Recently I've found ...
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1answer
74 views

postgresql.conf file found in both /usr/share/postgresql and /etc/postgresql/

While troubleshooting another issue I noticed that in my Ubuntu 14.04 system there are two postgresql directories containing a postgresql.conf file: /usr/share/postgresql /etc/postgresql/9.3/main/ ...
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1answer
92 views

postgres user cannot access location of new data directory

I moved my postgresql 9.3 data directory to a different drive, however, my postgres user cannot seem to access that new drive despite my best efforts. I am running on ubuntu 14.04 LTS x64. So I ...
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0answers
29 views

MySQL using cpu after cancelling slow query

I had to cancel a very slow running query after it ran for a few days without completing on my ubuntu server. Since then mysql has been persistently running a process which is using 25-45% of the cpu ...
0
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1answer
21 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 = ...
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3answers
397 views

lsnrctl is not working on Ubuntu 14.04

I have managed to install Oracle 11g on Ubuntu 14.04 through lots of pain. I managed to install it in the end but listener does not seem to be working and even responding any command. My /home/...
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1answer
432 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 ...
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1answer
7k 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
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1answer
93 views

Disk I/O Utilization at 95%

My disk I/O utilization is at 95% at my MySQL server. What are steps I could take to fix this? It is a Ubuntu VP with 16 GB Memory and 8 cores. Here is a screen-shot of the load:
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0answers
25 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, "members"...
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0answers
131 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 ...
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1answer
38 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 well-...
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1answer
133 views

PostgreSQL error moving data directory to home folder

I have a problem with the moving of my data directory of PostgreSQL. I found many different ways, but none worked. The most sensible way for me was: Stop PostgreSQL Copy data from old folder to new ...