1.定時任務--當前月的前一個月的當前日期

05 20 1 * * /bin/sh /home/oracle/truncate_partition.sh &> /dev/null
05 20 11 * * /bin/sh /home/oracle/truncate_partition.sh &> /dev/null
05 20 21 * * /bin/sh /home/oracle/truncate_partition.sh &> /dev/null

[oracle@testglt]$ cat /home/oracle/truncate_partition.sh
#!/bin/bash

source /home/oracle/.bash_profile
sqlplus -s test/test@db>> /home/oracle//truncate_partition.log <<EOF
set feedback off heading off term off
set pages 1000 trim on trims on lines 32767 long 999999
set echo off
spool /home/oracle/truncate_partition_`date +%y%m%d`.sql
@/home/oracle//truncate_partition.sql
spool off
EOF

sqlplus sys/test@dbas sysdba >> /home/oracle/exec_truncate_p.log <<EOF
@/home/oracle/truncate_partition_`date +%y%m%d`.sql
EOF

針對分區表一個月3個分區定期清理腳本