Category Archives: Unix

Oracle > 10g, DBs in general – notes

A database schema (ERD) is the skeleton structure that represents the logical view of the entire database. It defines how the data is organized and how the relations among them are associated. It formulates all the constraints that are to … Continue reading

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Oracle 13 + Solaris, some notes

Oracle Solaris is optimized on both SPARC and x86 systems. BUT : Processors in the x86 family are based on the CISC (Complex Instruction Set Computers) architecture, while the SPARC (Scalable Processor Architecture) processor is based on the RISC (Reduced … Continue reading

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About databases : Oracle

Since I work with them, I should learn some basic stuff about DBs. Here it is Oracle….. ***************************************************************** A database is an organized collection of information treated as a unit. The purpose of a database is to collect, store, and … Continue reading

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HP UX and cimserver

So I have strange things happening tied up on cimserver, and I have tried to find up what it is. Here is what I have found : Cimserver is a daemon for HP WBEM (Web Based Enterprise Management) Services. HP … Continue reading

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NFS error on Unix system

If you get this error, while trying to mount a NFS partition : # ./sbin/init.d/nfs.client start starting NFS CLIENT networking ….. mounting remote NFS file systems … nfs mount: mount_nfs: mount: /local-NFS-folder: Device busy NFS server NFS-server.my.domain not responding still … Continue reading

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PATH environment variable on UNIX

This goes for HPUX 11.23 /etc/PATH is a global variable. The /etc/PATH is the PATH used if you do not set the PATH command in /etc/default/login, /etc/profile, .profile files. Every user may have, bud does not have to have, its … Continue reading

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Some UNIX kernel parameters

How to list kernel parameters : # kctune |grep maxfiles_lim Or, for details : # kctune -v name-of-the-parameter How to change kernel parameter using SAM : All configurable kernel parameters must be specified using an integer value or a formula … Continue reading

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HP UX 11.23 vpar memory modification

Some abbrevations and definitions : Base memory – used by kernel for content that cannot be evacuated, or (if there is a surplus) that it can evacuate. Can not be whipped whlile vpar is up. vpar Monitor A04 does not … Continue reading

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Change a FC card on Unix server

So if you have a Unix server, and a FC card goes bang on it, it has to be changed. You have to check all the paths that go over her to your discs on storage. 1. Check if all … Continue reading

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Unix and processes which start up with the server

Startup and shutdown scripts in HP UX server have 3 parts : 1.The original script is always in /sbin/init.d 2.Configuration file for the script is in /etc/rc.config.d (it may or may not be present) 3.Symlink file for script is in … Continue reading

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