删除库的时候报错 ERROR: database "temp_test_yang" is being accessed by other usersDETAIL: There are 4 other sessions using the database. 说明该temp_test_yang库正在被人连接.解决方法是: 查询出连接该数据库的进程,并将其杀死(比较暴力) select pg_terminate_backend(pid) from pg_stat_activity wh
使用AFNetworking 框架 解析数据 报错提示数据请求失败Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed. (Cocoa error 3840.)" (JSON text did not start with array or object and option to allow fragments not set.) UserInfo=0x9b7eba0 {NSDeb
Oracle中建立物化视图报错 今天在建立视图的时候,报了一个错:ORA-01723: zero-length columns are not allowed. 建视图的语句: create materialized view VW_XX refresh force on demand as select '' f_a,b f_b from xx 根据后面的语句创建视图,都是可以的,但是根据查询语句创建物化视图就出现错误了.网上找了一下,原因是:ORA-01723是ORACLE规定因为列的长度最
###oracle dg 报错提示 涉及硬盘错误 Dec 23 03:28:01 xhisdg rsyslogd: [origin software="rsyslogd" swVersion="5.8.10" x-pid="4554" x-info="http://www.rsyslog.com"] rsyslogd was HUPed Dec 23 03:28:03 xhisdg rhsmd: In order for Su
输入: git pull origin master git报错提示 fatal: 'origin' does not appear to be a git repository fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists. 在网上找到的解决办法:重新输入一次: git remote add
前提: mac中之前安装了mysql,一段时间没使用,今天使用mysql客户端去连接,报错提示密码过期,原因是mysql5.7之后版本有密码过期这个功能. error: Your password has expired. To log in you must change it using a client that supports expired passwords. 打开终端,启动mysql服务: sudo /usr/local/mysql/support-files/mysql.ser
安装一些插件.库,遇到报错 Could not fetch URL https://pypi.org/simple/pytest-pycodestyle/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pytest-pycodestyle/ (Caused by S