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netsh wlan show profile name="WIFINAME-Test" key=clear C:\windows\system32> C:\windows\system32>netsh wlan show profile name="WIFINAME-Test" key=clear 阅读全文
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oracle ORA-01114 IO error writing block to file 207 (block # ) Reference: https://stackoverflow.com/questions/20961832/ora-01114-io-error-writing-bloc 阅读全文
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centos 修改系统时间 [echo0282@instance-1 ~]$ sudo timedatectl set-timezone Asia/Shanghai timedatefctl list-timezone | grep Asia 阅读全文
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sudo apt-get install tomcat8-admin tomcat8-docs tomcat8-examplessudo vi /etc/tomcat8/tomcat-users.xmladd line: <user username="admin" password="passwo 阅读全文
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Reference: https://stackoverflow.com/questions/38986910/intellij-idea-address-localhost1099-is-already-in-use Solution: netstat -aon | find "1099" tas 阅读全文
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查看哪个进程占用了9999端口: lsof -i:9999 阅读全文
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Error: javax.servlet.ServletException: java.sql.SQLSyntaxErrorException: Expression #4 of SELECT list is not in GROUP BY clause and contains nonaggreg 阅读全文
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reference: https://asktom.oracle.com/pls/apex/asktom.search?tag=getting-ora-31626-job-does-not-exist-and-ora-06512-from-my-export-data-pump-joboracle 阅读全文
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startup nomount选项启动实例,但不安装 数据库。当数据库以这个模式启动时,参数文件被读取;后台进程和内存结构被启动;但它们不被附加或与数据库的磁盘结构进行通信。当实例处于这个状态时startup nomount选项:(读初始化参数文件,启动实例),数据库是不可使用的。通常启动到这里可以 阅读全文
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第一步,找到磁盘 ll /dev/sd* ll /dev/vd* 第二步,查对应磁盘类型 cat /sys/block/sda/queue/rotational 结果: 返回0:SSD盘 返回1:SATA盘 阅读全文