Check out this valuable book by Jon Emmons on
Linux for the Oracle DBA for more tips and tricks.
Suppose there exists a need to find a UNIX script that searches
every file on the UNIX server for a file that queries the
dba_2pc_pending view.
Assume the name and location of the file have been completely
forgotten, and we need a script to quickly locate our SQL statement.
- The first step is to write a command that will display all
file names on the server. This is quite simple in UNIX, and it
returns a list of every file on the server:
find
. -print
/home/oracle/sqlnet.log
/home/oracle/export.sh
/home/oracle/mon
/home/oracle/mon/a.ksh
/home/oracle/mon/alert.ksh
/home/oracle/mon/count.ksh
/home/oracle/mon/create_mon1_tables.ksh
/home/oracle/mon/fix_db.ksh
/home/oracle/mon/get_vmstat.ksh
/home/oracle/mon/oracheck.lst
/home/oracle/mon/alerts_PROD.lst
/home/oracle/mon/mail_reports.ksh
- We now have a complete list of all of the
UNIX files. Because we know that the grep commands accepts file
names as an argument, we can use xargs to search each file for
our Oracle table name:
>find
. -print|xargs grep -i dba_2pc_pending
home/oracle/sql/pending.sql: dba_2pc_pending
find / -print
"add listing"
This ability to take a basic UNIX command and chain it with
other commands is a fundamental principal in UNIX shell programming
for Oracle.
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