扩展临时表空间，不能用datafile，只能用tempfile
错误语句：
ALTER TABLESPACE backup_temp ADD datafile '/data/oradata/backup/backup_temp02.dbf' size 150m autoextend on next 50m MAXSIZE unlimited;
正确语句：
ALTER TAB...
报错内容：
The unit files have no installation config (WantedBy=, RequiredBy=, Also=, Alias= settings in the [Install] section, and DefaultInstance= for template units). This means they are not meant t...
原网页地址：
How To Limit Rate of Connections (Requests) in NGINX (tecmint.com)
The following configuration example shows limiting the rate of request to a web application API. The shared memory size is ...
仅是简单记录，不代表这样是正确的。
错误的方法，使用StringUtils.isEmpty判断，会报空指针
if (StringUtils.isEmpty(entity.getVersionCode().toString())){
entity.setVersionCode(1L);
}
正确的方法：
if (ObjectUtil.isNull(en...
本机win10，win11安装下载驱动均没有报错。
但是在，windows server操作系统下，安装完成后，报错：
百度了一下，说是JDK安装的时候，少了东西，又把本机的JDK拷贝上去，重新安装以后，问题依旧。
于是，只有再谷歌一下了，找到这么一篇文章：
mysql - Can you help me to fix the connection with my ...
MySQL初始化账户，或者修改root密码的命令:
ALTER USER 'root'@'localhost' IDENTIFIED BY 'root' PASSWORD EXPIRE NEVER; #修改加密规则
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'roo...
![systemctl enable rc-local.service报错：The unit files have no installation config (WantedBy=, RequiredBy=, Also=, Alias= settings in the [Install] section, and DefaultInstance= for template units). This](https://www.144d.com/content/templates/J2/images/random/11.jpg "systemctl enable rc-local.service报错：The unit files have no installation config (WantedBy=, RequiredBy=, Also=, Alias= settings in the [Install] section, and DefaultInstance= for template units). This")
