环境说明 在亚马逊云AWS上面安装了一套oracle 19c dataguard,linux centos 7.7的操作系统,开始时同步正常,实时应用redolog,一会儿之后就不行了.报错如下: ora-03186: cannot start oracle adg recovery on a non-oracle cloud database on a server that is not a primary server 备库报警日志如下: 主库: select status,error f
Using DBCA to Create a Data Guard Standby The Database Configuration Assistant (DBCA) can also be used as a simple command-line method to create an Oracle Data Guard physical standby database. The DBCA command qualifier used to create the physical st
linux下安装12c 重启linux之后,dbca PDB/CDB使用 SQL> select instance_name from v$instance; INSTANCE_NAME ------------------------------------------------ GORCL SQL> alter pluggable database p_orcl open; Pluggable database altered. SQL> alter session set con
Oracle 12c创建用户时出现“ORA-65096: invalid common user or role name”的错误 在oracle中,引入了多租户概念,以前是一个instance对应一个database(单实例),或者多个instance对应一个database(RAC),现在一个实例可以对应多个database了,除了这个CDB(Container Database):数据库容器之外,还可以有很多个PD(Pluggable Database):可插拔数据库(一般来说大部分都是一