[root@localhost ~]#su - oracle [oracle@localhost ~]$ sqlplus / as sysdba...
1、plsql 在SQL窗口执行完一条select语句后按 F5 即可查看刚刚执行的这条查询语句的执行计划 2、AUTOTRACE命令 sql*...
切换oracel su - oracle 查看归档日志路径 find / -name *.dbf 登录rman rman target / ...
Nulls first 和 nulls last 是Oracle Order by支持的语法。 不管是asc 还是 desc nulls fir...
dba 登陆 oracel 1、解锁 被锁的system用户 alter user system account unlock; 解锁 被锁的其...
已安装Zookeeper 并启动 1、下载安装包 https://link.zhihu.com/?target=https%3A//archiv...
Map map1 = new HashMap<>(); map1.put("a","123"); map1.put("b","...
//利用Stream.of方法创建流 Stream stream = Stream.of("hello", "world", "Jav...
List mobileList = userList.stream().map(RemindUserOut::getMobile).colle...