...安装IUS,IUS provides Red Hat Package Manager(RPM) packages for some newer versions of select software. ...https://ius.io/GettingStarted/ yum upateyum ...
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编程语言 时间:
2017-11-10 18:26:10
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377
Given the scriptcreate script db_backup_datafile_script{backup datafile and 1, and2 plus archivelog delete input;}What is the result of running this c ...
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其他好文 时间:
2017-11-10 15:09:07
阅读次数:
195
rac数据库默认sql tuning advisor,导致大量library cache lock问题现象:客户反映周六周日固定十点钟,一个程序会特别慢(大概10分钟),平时1到2秒。查看当时的日志发现:DBMS_STATS: GATHER_STATS_JOB encountered errors. ...
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数据库 时间:
2017-11-10 15:08:37
阅读次数:
1011
The Vector class implements a growable array of objects. Like an array, it contains components that can be accessed using an integer index. However, t ...
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其他好文 时间:
2017-11-10 00:33:03
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214
The factorial function, n! is de?ned thus for n a non-negative integer:0! = 1 n! = n×(n?1)! (n > 0)We say that a divides b if there exists an integer ...
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其他好文 时间:
2017-11-10 00:18:10
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154
ypeScript 2.2 introduced the object, a type that represents any non-primitive type. It can be used to more accurately type methods such as Object.crea ...
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其他好文 时间:
2017-11-09 22:36:27
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221
pip install win32apipip install pywin32都会提示错误,如下: Could not find a version that satisfies the requirement win32api (from versions: ) No matching distr... ...
async函数的实现原理,就是将Generator函数和自动执行器,包装在一个函数里。async函数返回Promise对象,async函数的return值是then方法的参数,await后跟Promise对象或者数值,字符串,布尔值。await命令后面的Promise对象,运行结果可能是reject ...
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其他好文 时间:
2017-11-09 20:50:15
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183
Your ARCHIVELOG-mode database has lost three datafiles and shut down. One is assigned to theSYSTEM tablespace and two are assigned to the USERS tables ...
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其他好文 时间:
2017-11-09 16:32:32
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203
What methods are available to recover lost control files? (Choose all that apply.)A. Backup control file.B. Emergency control file.C. The create contr ...
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其他好文 时间:
2017-11-09 16:32:04
阅读次数:
145