12-14-2015
Is this a homework assignment? Homework and coursework questions can only be posted in
this forum under
special homework rules.
What have you tried to solve this problem?
What operating system are you using?
What shell are you using?
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
hi
i would like to know the path of init.ora in AIX Server
i tried with find command but i could not find it.
can somebody help me with that. (8 Replies)
Discussion started by: matrixmadhan
8 Replies
2. Solaris
what is the function of the init.ora file and suppose by mistake it gets deleted , what will be the consequences on the server (1 Reply)
Discussion started by: asalman.qazi
1 Replies
3. Solaris
Hi all,
Am intermittently getting the following errors on one of my databases.
Errors in file /oracle/HRD/saptrace/background/hrd_psp0_13943.trc:
ORA-27300: OS system dependent operation:fork failed with status: 12
ORA-27301: OS failure message: Not enough space
ORA-27302:... (1 Reply)
Discussion started by: newbie_01
1 Replies
4. UNIX for Advanced & Expert Users
Hi - I am trying to grep all "ORA" errors in a log files.I have to grep all ORA errors except one error for example ORA-01653.How can exclude that error in "grep" command?
In following "grep" command I want to exclude "ORA-01653" error
grep -i ORA alert.log >>/tmp/ora_errors.txt
... (7 Replies)
Discussion started by: Mansoor8810
7 Replies
5. HP-UX
Dear All,
i am not able to start the 9i oracle database because of the following problems.
I log in into unix
and then into sqlplus
export oracle_sid=SATEST
startup nomount
i am getting the following errors
ORA-27300: OS system dependent operation:semget failed with... (3 Replies)
Discussion started by: alokpattar
3 Replies
6. Shell Programming and Scripting
Hi all- i am having some hiccups while writing a korn shell to edit init.ora file for automating latest PSU patchset.(Oracle)
I am trying to edit(add) the ._fix_control and .event with certain parameters.
if anyone has any idea that will be helpful.
thanks. (1 Reply)
Discussion started by: sub
1 Replies
7. Shell Programming and Scripting
Hi,
I would like to modify, in script schell, the line right above (DESCRIPTION and check three cases :
if line contain ".world" then line=line-".world" concat "," concat line
if line dont contain ".world" then line=line concat "," concat line concat".world"
else line=line
Keep in... (10 Replies)
Discussion started by: elcaro
10 Replies
8. Shell Programming and Scripting
I want to check for "errors" or "ORA-" in Y.if there is an error then exit
Y=`sqlplus -s user/passwd<< EOF
exec test_Proc;
exit;
EOF`
if ; then
exit 1
fi
but this doesnt work (6 Replies)
Discussion started by: haadiya
6 Replies
9. Shell Programming and Scripting
Anymore have any code to easily parse the listener.ora to update the ORACLE_HOME for a specific sid?
thanks. (1 Reply)
Discussion started by: nugent
1 Replies
10. Red Hat
Hi,
User claim that job is running slow from their end.
I DBA found in database the below errors in alert log file.
ORA-27603: Cell storage I/O error, I/O failed on disk o/192.168.10.3/RECO_DM01_CD_01_drm01 at offset 13335789568 for data length 1048576
ORA-27626: Exadata error: 2201 (IO... (2 Replies)
Discussion started by: Maddy123
2 Replies
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)