Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: Given num = 38, the process is like: ...
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其他好文 时间:
2017-11-12 21:52:32
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181
今天数据群有人反应网站不能正常打开,经检查Oracle数据库远程连不上,提示信息:ORA-00257: archiver error. Connect internal only, until freed。可能是archivelog满了。以前学习SQL只关注CRUD,对日志了解甚少,此次宕机虽然对生 ...
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数据库 时间:
2017-11-11 23:48:49
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390
我在扇贝发现一片好文。 Sometimes relationships can seem like a lot of work until you sit back and realize just how much you've been given. A thriving, healthy re ...
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其他好文 时间:
2017-11-11 11:18:52
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196
Your archive-log destination directory runs out of space. What is the impact of this on the database?A. None. The database will switch over to the sta ...
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其他好文 时间:
2017-11-08 17:53:58
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118
# 磁盘初始化 [root@localhost ~]# fdisk /dev/sdb Welcome to fdisk (util-linux 2.23.2). Changes will remain in memory only, until you decide to write them. B... ...
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其他好文 时间:
2017-11-08 00:54:28
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220
6、shell脚本,打印九九乘法表 参考脚本如下 ...
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其他好文 时间:
2017-11-07 19:44:28
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136
What is the purpose of the until change option of the restore command?A. It allows you to select the SCN that you want to restore to. B. It allows you ...
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其他好文 时间:
2017-11-06 18:04:48
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111
参考:http://blog.csdn.net/marty_zhu/article/details/2566299 1,看看project -- Build Automatically有没有勾上?如果没有,勾上以后,clean一下,重启eclipse 2,看看你的lib里面有没有不用的jar包,看你 ...
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编程语言 时间:
2017-11-05 14:33:30
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300
2、case 语句 只判断一种条件关系 语法: case ¢变量名 in “值1”) 程序1 ;; "值2") 程序2 ;; *) 程序3 ;; esac 3、for循环 1)语法:(将值赋给变量执行程序,有几个值就执行几次) for 变量名 in 值1 值2 值3。。。。 do 程序 done 2 ...
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系统相关 时间:
2017-11-03 12:52:11
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225
1 情况动词must 和词组have to, need to ,have got to 都表示必须做某事或者要求做某事。 need to have to must have got to When is the project due? We need to(have to, must, have ...
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其他好文 时间:
2017-11-02 13:14:55
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159