network admin

ORA-12154: TNS:could not resolve the connect identifier specified Error and Solution

by Vivek Gite on May 1, 2008 · 6 comments

Q. My Oracle XE installation was working fine, but today I’m getting an error – which read as follows under Ubuntu Linux : ORA-12154: TNS:could not resolve the connect identifier specified How do I fix this problem without reinstalling Oracle?

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Ubuntu Change IP

by Vivek Gite on April 15, 2008 · 3 comments

Q. How do I change IP address under Ubuntu Linux using GUI and command line options?

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Where Does Linux Save Wireless Card Settings?

by Vivek Gite on February 13, 2008 · 0 comments

Q. I’d like to get more information about my wireless settings stored under CentOS / RHEL / Fedora Linux. Where Does Linux Save Wireless Card Settings?

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Router ARP Cache is Not Releasing Linux / UNIX Server IP address

by Vivek Gite on January 25, 2008 · 5 comments

Q. Recently we made changes to our server hardware and swapped all IP address from old to a new server. However, 2 IP addresses are not get updated due to arp cache issues (IPs are cached on the router). They are going to other servers. How do I solve this problem under Redhat Enterprise Linux [...]

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Find the network path / route that is being used to reach a particular host on internet

by Vivek Gite on April 7, 2006 · 0 comments

traceroute tracks the route packets take across an IP network on their way to a given host.

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