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

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Install Access Database Engine on Linux Centos

I want to read mdb file from linux centos. To read that file, we must already install access data engine. Is there any access data engine for linux? Now I'm using mdbtools to configure ODBC connect ...
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1answer
94 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
334 views

MySQL slave stuck at 'System lock' most of the time, high CPU usage

Let me describe what we are facing now: We have a MySQL Master-Slave, Row Based Replication setup and at the moment, the slave is stuck with a perpetual System Lock. The Master is an active server ...
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1answer
162 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
26 views

Cannot start MySQL service on linux RHEL when pointing datadir to mounted ecryptfs folder

I moved the data directory for MySQL to an ecryptfs encrypted folder. When I run service mysqld start as root, the service will not start. [Warning] Can't create test file ...
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1answer
283 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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2answers
1k views

My MySQL server time is not the same as my Server

So a month ago I had purchased a server from a hosting company. The info are; Linux Centos (latest version). I installed ZPanel which installs phpMyAdmin, MySQL and all the other good stuff. ...
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1answer
220 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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2answers
100 views

What is the easiest and best way to migrate data from Oracle in Linux Platform to SQL Server in Windows Platform?

I came to know there is a tool called Microsoft SQL Server Migration Assistant v5.3 for Oracle which can be used to convert the Oracle database to Microsoft SQL. But I have Oracle database in Linux ...
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1answer
570 views

Proper procedure for migrating a MySQL database to another Debian machine?

I have one server running an older Debian version with MySQL 5.x and a newer Debian server, also running MySQL. I've created a backup of all databases on the first server like so: mysqldump -uuser ...
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1answer
1k views

postgres service suddenly not working after the computer crashed while working

I've been working with postgres on a linux server for the last couple of months. Last week, half of our servers crashed and my one with them. I was in the middle of uploading data to the postgres ...
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2answers
32 views

mysql.sock not found on CentOS 7 machine

I am getting the following error when I try to log into mysql from the CentOS 7 terminal of the machine where mysql is installed: ERROR 2002 (HY000): Can't connect to local MySQL server through ...
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2answers
4k views

Taking mysql dump from another machine

I have MySql db on Machine A , I have Mysql credentials. And accessing this MySQL from machine B which I have crdential's. But I couldn't take mysqldump from Machine B. Please help me. Both ae Linux ...
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2answers
143 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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2answers
289 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 ...
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1answer
946 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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1answer
291 views

Trouble with installing additional modules on Postgresql 9.1 on ALT-Linux

I'm trying to create extension under postgresql 9.1 (Linux): CREATE EXTENSION pg_trgm; but got error: ERROR: could not open extension control file "/usr/share/pgsql/extension/pg_trgm.control": No ...
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0answers
11 views

MongoDB mongoexport $or query returns zero records

I have the following cmd in bash termial mongoexport --db fscrap --collection Wall -q "{\$or : [{'insert_time' : {\$gte : new Date(1393624800000)} },{'comments.comment_time' : {\$gte : new ...
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2answers
308 views

Hyperthreading & MySQL InnoDB Thread Concurrency Performance

I have a dedicated DB Server with the following specs" Ubuntu 12.04 LTS Server Intel(R) Xeon(R) CPU X5670 @ 2.93GHz 12 Cores MySQL 5.5.29 64 GB RAM RAID10 We are currently doing Hyperthreading ...
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2answers
97 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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1answer
632 views

configure: error: SQLite3 library not found

I'm getting the below configure error while doing the install the Zabbix reporting tool on Linux. i have tried both Versions(zabbix-2.0.9,zabbix-1.8.17), but getting same issue. Log: checking for ...
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2answers
67 views

Linux kernel parameters for oracle

I wonder what are the optimal Linux kernel parameters for oracle 11g db on 64-bit system. I didn't find any detailed, good or full recommendations or best practices for this issue. Just found one ...
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2answers
1k views

Mysql Server Login and Permission Deny Error

I have a problem with MySQL server. After upgrading MySQL server from 5.3 to 5.4, I am not able to log-in using my MySQL root password (Yes, I am able to log-in without password!). Also not able to ...
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1answer
1k views

mysqld dead but subsys locked

I'm executing the following command in a shell script and I'm executing this on an RHEL-6 server and MySQL version 5.1.47- mysqld_safe --defaults-extra-file=/custom/path/of/my.cnf The path of ...
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2answers
83 views

Reset of root password not working?

Our previous DBA left and didn't note the root password down, and I've been pressganged into doing part of his job until we can hire someone. So I create a file : /root/mysql.password Inside that ...
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1answer
206 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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2answers
326 views

Reading CSV files located on LINUX server and updating the tables in SQL Server Database

I was wondering how do we ingest CSV files located on a Red Hat LINUX server into SQL Server Database Table. I know we can write a Stored Procedure/Bulk Insert to read the files that are located on ...
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1answer
24 views

Change MySQL 4.1 Windows to MySQL 4.1 Linux- Problem with the key Sensitive in query

I need help to resolve this problem. change the server MySQL 4.1 run on Windows to MySQL 4.1 run on Linux(debian). This all working, but same query not return the correct data because key ...
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1answer
53 views

Similar hardware, Same DBconfiguration and Database but different status variables result between Windows and Linux server [closed]

I have two database servers - one is Windows - 2008 and another is RHEL5 with similar hardware configuration. Both OS are 64 bit. MySQL 5.1.58 community edition is installed on Windows servers while ...
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1answer
30 views

remove password requirement for user postgres

I understand that, upon installation, PostgreSQL has no password for its db root user (postgres): postgres=# select usename, passwd is null from pg_shadow; usename | ?column? ----------+---------- ...
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3answers
65 views

Upgrading Oracle from 11.1.0.6 to 11.2.0.2 on Linux Red Hat

I am trying to upgrade the Oracle db from 11.1.0.6 to 11.2.0.4 in Red Hat Linux 5.3. The current database is installed on location. I checked the path using command cat /etc/oratab ...
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2answers
2k views

Database creation on Linux with dbca: “command not found”

I have installed an Oracle on my machine. When I open a session with VNCServer and type dbca, either as root or as oracle, I get these errors: -bash : -dbca : Command Not found Xlib: connection to ...
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1answer
27 views

Mysqldump without slow query

Situation: I currently monitor an instance of MySQL for slow queries. We have a mysql user dedicated to backups which performs a mysqldump, but the mysqldump gets logged as a slow query. Question: ...
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3answers
236 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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0answers
412 views

multiple postgreSQL running as primary server on pgpool

I'm facing problem with my pgpool setup. Currently, this is my requirement based on the pgpool documentation here : Server A : Install with PostgreSQL database. Run as primary server Server B : ...
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1answer
63 views

PostgreSQL data directory/files portability

I have lost my PostgreSQL 9.1 installation on my Ubuntu machine by update to Ubuntu 14.10. Now I have no (reasonably easy) way to export the data from my PostgreSQL 9.1 database. Is it possible to ...
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9answers
8k views

What tools are there for data masking? (MySQL, Linux) [closed]

I'm looking for (ideally free, open-source) data masking tools. Do any such exist? Note: this related question deals with tools for generating test data, but in this question I'm more interested in ...
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1answer
2k views

Table is marked as crashed and should be repaired

I have MySQL and Nagios installed Linux PC (Centos5.5) I have wrote some script to fetch the data from Nagios to Mysql DB (Exactly fetch data in Table) The data fetching working properly (confirmed ...
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4answers
7k views

Scriptable command line access to SQL-Server from linux

Does anyone know of a ready made1 command line tool that would allow me to connect from a linux client to a sql-server? I want to be able to run arbitrary queries, but most of the time I want to be ...
0
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1answer
80 views

ODBC SQL Server driver on Linux/nginx

Writing here because really can't figure out what to do. I have a site located at ftp server. And now it moves to a new server based on Linux/nginx. And everything is fine except SQL Server ODBC ...
0
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1answer
96 views

can't execute opatch even I'm in the oinstall group with -rwx--x---

I'm in $ORACLE_HOME/OPatch directory and i type opatch then it response: -bash: opatch: command not found if i do ./opatch then it response: /bin/sh: ./opatch: Permission denied opatch ls -l shows ...
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1answer
264 views

how can I call nzsql or nzload from script without disclosing sensitive password?

I don't see this in the Netezza documentation. We have lots of Linux scripts where we do this: NZ_PASSWD_ENCRYPTED=29TY20T98= NZ_PASSWD_CLEAR=`DecryptFunc $NZ_PASSWD_ENCRYPTED` NzResult=$(nzsql -db ...
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3answers
345 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: ...
0
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1answer
54 views

How to configure my.cnf in 5.6.17?

On production server(linux machine mysql 5.6.17), I tried to find my.cnf to change the system variables, but my.cnf was not in /etc/my.cnf location. It was in usr/ directory. Also that file contains ...
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2answers
395 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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2answers
582 views

PostgreSQL - pgAdmin error creating a server

I have the latest versions of PostgreSQL and its GUI-frontend, pgAdmin, installed. When I try to register a new server a fatal error appears when pgAdmin tries to connect to the newly created server - ...
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1answer
32 views

How to connect to Oracle database on VM1 from host with 11gClient

I have a VM running Oracle Linux 6.5, I loaded Oracle server x64bit and created a database. The database functions fine and the listener is up and running for the database. I want to connect to the ...
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0answers
58 views

how to make oracle db instance and em dbconsole running manually/?

I installed oracle11gr2 (x64) on vmware oracle linux (x64). When I finished installing, I'm sure that I executed the init scripts as root: /app/oraInventory/orainstRoot.sh ...
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1answer
29 views

Trying to load a file into a database on virtual machine

I have set up a Postgres db on a linux vm and have been having no issues using a GUI to connect to it. However, I am trying to load a large, 32GB, file onto it and so am skeptical of the old way I was ...
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3answers
521 views

Which graph database for search engine and gis?

I just learned there are "graph databases" out there, which are more suited for two applications "search engine" and especially "gis". To avoid discussions weather a relational DB is better suited ...