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How to Write an Oracle Shell Script

Oracle Database Tips by Donald BurlesonAugust 9, 2015

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.  

  1. 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  

  1.  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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