The following is backup and recovery tip #2 from "30 tips in 30 minutes," brought to you by the IOUG. Return to the main page for more tips on this
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I've seen hot backup scripts a plenty. Most of them are quite involved. Maybe you'd like a simple one that you can build upon. Heck, you can even use this script just like this. These commands, run from SQL*Plus, use PL/SQL to create a hot backup script from the data dictionary.
set feedback off pagesize 0 heading off verify off
set linesize 100 trimspool on
Rem Set SQL*Plus user variables used in script
define dir = '/backup'
define fil = '/tmp/open_backup_commands.sql'
define spo = '&dir/open_backup_output.lst'
prompt *** Spooling to &fil
set serveroutput on
spool &fil
prompt spool &spo
prompt alter system switch logfile;;
DECLARE
CURSOR cur_tablespace IS
SELECT tablespace_name
FROM dba_tablespaces;
CURSOR cur_datafile (tn VARCHAR) IS
SELECT file_name
FROM dba_data_files
WHERE tablespace_name = tn;
BEGIN
FOR ct IN cur_tablespace LOOP
dbms_output.put_line ('alter tablespace '||ct.tablespace_name||
' begin backup;');
FOR cd IN cur_datafile (ct.tablespace_name) LOOP
dbms_output.put_line ('host cp '||cd.file_name||' &dir');
END LOOP;
dbms_output.put_line ('alter tablespace '||ct.tablespace_name||
' end backup;');
END LOOP;
END;
/
prompt alter system switch logfile;;
prompt spool off
spool off;
Rem Run the copy file commands from the operating system
@&fil
On Linux, connect to SQL*Plus as SYSDBA and run this script like this:
LINUX> sqlplus /nolog SQL> connect system/manager as SYSDBA SQL> @open_backup.sql
For more information see Chapter 5 of "Oracle backup and recovery 101."
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About the author: Kenny Smith has been working with Oracle technology on HP servers for over a decade. He specializes in Oracle database architecture, database administration and development. He has presented at numerous Oracle conferences on two continents. He has published many articles describing Oracle solutions and has co-authored "Oracle backup and recovery 101" from Oracle Press.
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