OGG安装前的检查

1、打开数据库补充日志和force logging
SQL> select supplemental_log_data_min,force_logging from v$database;
SQL> alter database add supplemental log data;
SQL> alter database force logging;
SQL> select supplemental_log_data_min,force_logging from v$database;

2、检查是否归档
SQL> archive log list
SQL> shutdown immediate
SQL> startup mount
SQL> alter database archivelog;
SQL> alter database open;
SQL> archive log list

3、确认ogg版本
查询数据库版本
SQL> select * from v$version

4、检查磁盘空间
磁盘空闲需要50G