定期删除备份的SQL数据库的脚本
比如某个数据库下对SQL SERVER的数据库进行了每天的备份，现在要保留7天以内的，其他的删除掉，用ASP可以实现了，但要用到filesystemobject，不大爽
首先写一个js文件clearDatabaseBackup，内容如下
function deleteBackupFile(beforedays) {
var fso = new ActiveXObject("Scripting.FileSystemObject");
var dir = fso.GetFolder("D:\\数据库备份"); //改成你的数据库备份目录
for (var fc = new Enumerator(dir.SubFolders); !fc.atEnd(); fc.moveNext()) {
//假设数据文件的备份文件都是以abc_log开头的，比如abc_log_xxxx
if (fc.item().name.substr(0,9) == "abc_log") {
for (var logfiles = new Enumerator(fc.item().Files); !logfiles.atEnd(); logfiles.moveNext()) {
var fileName = logfiles.item().name;
var year = "20" + fileName.substr(19, 2);
var month = fileName.substr(21, 2);
var day = fileName.substr(23, 2);
var days = Math.round(((new Date()).getTime() - Date.UTC(year, month - 1, day)) / 1000 / 60 / 60 / 24);
if (days >= beforedays) logfiles.item().Delete();
}
}
}
}
//保存一周内的数据库备份文件
deleteBackupFile(7);
然后写一个BAT文件，加入到任务计划
cscript clearDatabaseBackup.js
相关文档：
废话不多说,上代码
SELECT k
from (
SELECT 'shanghai' AS k from DUAL
UNION ALL
SELECT 'dalian' AS k from DUAL
UNION ALL
SELECT 'beijing' AS k from DUAL
)
ORDER BY CASE
WHEN k = 'beijing'
......
给PL/SQL创建账号、密码和付权限
CREATE USER zxd PROFILE "DEFAULT" IDENTIFIED BY zxd DEFAULT TABLESPACE "USERS" TEMPORARY TABLESPACE "TEMP" ACCOUNT UNLOCK
grant dba to "zxd";
F:\oracle\ora92\network\admin 路径下tnsnames.ora
ZXD =
(DESCRIPTION =
&nb ......
select batch_no "批次号",get_id "分类" from (
select(
select plan1.batch_no from product_plan plan1 where plan1.item_no=(select head1.product_code from wo_head head1 where head1.order_no =bbb)) batch_no,
(select decode(get_id,'BUY','外购件','MAK','自制件','MB','未定') from item where item_ ......
cpcbid cpcbbh type parentid parentbh cbze
70 2009120001 11 NULL NU ......
清除SQL数据库日志文件
/*--压缩数据库的通用存储过程
有两种方法 一是压缩日志，二是删除日志。
一、压缩日志及数据库文件大小
因为要对数据库进行分离处理
所以存储过程不能创建在被压缩的数据库中
/*--调用示例
exec p_compdb 'test'
--*/
use master --注意,此存储过程要建在master数据库中
go ......
