on IBM-AIX for display
On IBM-AIX, vi was not working properly. Then set the environment variable as following and it started working. ( Thanks Magesh for same). $ export TERM=vt100 $
Unix split command to split files
split -20 source_filename.lst test1 Above command will split source_filename.lst with every 20 lines. Will create files with 20 lines and with following names. -rw-r–r– 1 oracle dba 41 Dec 28 11:53 test1ag -rw-r–r– 1 oracle dba 2127 Dec 28 11:53 test1af -rw-r–r– 1 oracle dba 2240 Dec 28 11:53 test1ae -rw-r–r– 1 oracle dba 2243…
to see when crontab is changed.
sunflower1/800P>ls -rlt /var/spool/cron/crontabs total 138 -r——– 1 root root 452 Jan 21 2005 lp -rw——- 1 root sys 308 Nov 9 2006 sys -rw——- 1 root sys 317 Aug 20 18:51 adm -rw——- 1 root staff 5605 Oct 9 10:09 bbxuser -rw——- 1 root staff 5126 Oct 9 10:13 bkgr -rw——- 1 root staff 457…
How to analyze statspack or AWR report.
http://oraperf.sourceforge.net/seminar/sevt_anal.html A typical waits event section of a report.txt looks like SQLDBA> Rem System wide wait events. SQLDBA> select n1.event “Event Name”, 2> n1.event_count “Count”, 3> n1.time_waited “Total Time”, 4> (n1.time_waited/n1.event_count) “Average Time” 5> from stats$event n1 6> where n1.event_count > 0 7> order by n1.time_waited desc; Event Name Count Total Time Average Time —————————…
v$event_name
v$event_name ——————————————————————————– select EVENT# NU,NAME,PARAMETER1 P1,PARAMETER2 P2,PARAMETER3 P3 from v$event_name; EVENT# NAME PARAMETER1 PARAMETER2 PARAMETER3 —- —————————————- ——————– —————– ————- 0 Null event 1 latch activity address number process# 2 latch free address number tries 3 free process state object 4 pmon timer duration 5 inactive session session# waited 6 process startup type process# waited…
Good notes for shared pool
Understanding and Tuning the Shared Pool Doc ID: Note:62143.1
Export With Query Another Example.
exp userid=mesg file=mesg_26NOV07.dmp log=mesg_26NOV07.log compress=N grants=N tables=TX_GIFT_CERTIFICATE,TX_PRODUCT_ZIP_CONF IG,TX_GIFT_CERTIFICATE_CHANNE statistics=none query=”where dt_crtd >= sysdate – 10″
Btee and Bitmap Plans in Oracle 9i and higher
alter session set “_b_tree_bitmap_plans”=false When coming out alter session set “_b_tree_bitmap_plans”=true
adding new line after specific pattern using sed
$cat t1.sql | sed ‘s/ORDER_DETAILS/ This is added newly/g’
Search and replace pattern
#!/bin/ksh file_name=$1 old_templet=$2 new_templet=$3 # Loop through every file like this for file in file_name do cat $file | sed “s/old_templet/new_templet/g” > $file.new #do a global searce and replace and put the results mv $file.new $file #rename $file.new to original name of file done If you want to replace single pattern with a new pattern…