Category Archives for Unix

Unix/Linux Introduction

Any Computer system consists of      * Hardware      * Operating System      * Applications and Utilities Unix is an operating system which was first developed in the 1960s in Bell Labs. Unix is a popular OS because of multi user, multi tasking, stability and portability capabilities. what is an Operating System?    Operating system […]

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Change “hosts” file in Windows Vista

If you wish to connect to a machine by hostname (which is not registered in DNS (Domain Name Server)) you need to add <IP> <Fully Qualified Hostname> <Hostname> in Hosts file.    Adding an entry in Non Vista (Microsoft O.S. XP, 2000, NT) is pretty simple. Open hosts file (using text editor like notepad, wordpad..) and hostname entry […]

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Unix/Linux Administration for Oracle DBA’s

           Hi Friends, I want to start posting Unix/Linux Administration concepts, as we are gettting lot of requests in the Forum. Since most of the Oracle Databases runs on Unix/Linux Platforms, as an Oracle DBA we need to have some Unix/Linux Knowledge, which we can not entirely depend on Unix/Linux Administrators. Here in coming posts, i […]

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IPTABLES : Linux based firewall

If you are Apps DBA, I assume you never have to do this but if you are in situation like me (Apps Server running IPTABLES firewall and you handling both Linux server and Apps) then here is quick way to open port from linux based software firewall IPTABLES. 1. Identify Port which you need to open on firewall […]

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Linux for beginners

I have recently started learning Linux. With no formal background in IT it was daunting but with help from friends and Google things are looking better. I thought it would be good idea if I compiled the web resources that I have been using and shared with newbies like me. I started by downloading Vmware […]

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Linux/Unix Basics

‘ROOT‘ on linux is the centre of all power. This account/user is the system administrator who has the access to all files & folders & can add or delete users or change their passwords. Some of the basic commands used on linux useful for Oracle Apps DBA’s are: 1. useradd The general syntax for the useradd command […]

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Linux Common Queries

Lot of readers asked me to post on Linux hence first post on Linux covers common queries from Apps DBA’s w.r.t. Linux.  If you use any command in Linux/Unix very frequently and wish to share with our readers please leave it as comment Q: How to delete files older than N number of days ? (Useful in […]

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