. oraenv vs setdb [SID]

7 More Discussions You Might Find Interesting

1. UNIX and Linux Applications

Samba loosing SID UID mapping

Hi all, I don't know how many times I've setup samba shares, but... It's been a while since the last time. The SID UID maps used to always seem random. I.E. if I had to move the data to another box, I'd have to note all of the SID / UID relations and write scripts to convert them on the new...

2. Shell Programming and Scripting

Script creation(How to validate SID?)

I was going write a script from following site. Unix Shell Script to Execute Oracle SQL Query (link removed) My configuration setting for oracle XE. export ORACLE_HOME=/usr/lib/oracle/xe/app/oracle/product/10.2.0/server export PATH=$PATH:$ORACLE_HOME/bin export ORACLE_SID=XE but after...

3. Shell Programming and Scripting

Read Oracle Username password SID from single file and pass it to shell

Dear All I am trying to write one shell which will be running through Cron which contain one SQL query. But I want to draw/fetch the Username password and Instance name (required to loging to the database) from one single file to run that SQL query . Also this file contain details of multiple...

4. Solaris

details on oraenv

I am getting error message when i enter the command like bash-2.05$ . oraenv bash: oraenv: No such file or directory can you please advice me why it is throwing error.

5. UNIX Desktop Questions & Answers

Sid

What is SID and how to gahter information about that ?? Is this the right forum to ask this question ? If not then please help me out..

6. Shell Programming and Scripting

need to generate unique id from constant sid

Hello I have multiple accounts that running application that uses unique port number I want to generate this port from some sid number that stays constant for every user account , is there any place in the system that generate number that is unique to the account ? thanks

7. UNIX for Advanced & Expert Users

SID=${ORACLE_SID:?"$TWO_TASK"}

Hi, if any one understand what does this mean : SID=${ORACLE_SID:?"$TWO_TASK"} I have it in a shell script. Many thanks in advance.

LEARN ABOUT DEBIAN

bup-margin

bup-margin(1)						      General Commands Manual						     bup-margin(1)

NAME

       bup-margin - figure out your deduplication safety margin

SYNOPSIS

       bup margin [options...]

DESCRIPTION

       bup margin  iterates  through  all  objects  in	your  bup repository, calculating the largest number of prefix bits shared between any two
       entries.  This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.

       For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45.  That  means  a  46-bit
       hash  would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
       its first 46 bits.

       The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects.  Since SHA-1 hashes have 160 bits,
       that  leaves 115 bits of margin.  Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
       with far fewer objects.

       If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see	if
       you're getting dangerously close to 160 bits.

OPTIONS

       --predict
	      Guess  the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
	      from the guess.  This is potentially useful for tuning an interpolation search algorithm.

       --ignore-midx
	      don't use .midx files, use only .idx files.  This is only really useful when used with --predict.

EXAMPLE

	      $ bup margin
	      Reading indexes: 100.00% (1612581/1612581), done.
	      40
	      40 matching prefix bits
	      1.94 bits per doubling
	      120 bits (61.86 doublings) remaining
	      4.19338e+18 times larger is possible

	      Everyone on earth could have 625878182 data sets
	      like yours, all in one repository, and we would
	      expect 1 object collision.

	      $ bup margin --predict
	      PackIdxList: using 1 index.
	      Reading indexes: 100.00% (1612581/1612581), done.
	      915 of 1612581 (0.057%)

SEE ALSO

       bup-midx(1), bup-save(1)

BUP

       Part of the bup(1) suite.

AUTHORS

       Avery Pennarun <apenwarr@gmail.com>.

Bup unknown-															     bup-margin(1)

UNIX for Dummies Questions & Answers