18c
https://www.cnblogs.com/DataArt/p/10018491.html
https://www.enmotech.com/web/detail/1/182/2.html
Oracle 18c十大新特性
https://blog.csdn.net/bisal/article/details/103998478
19c
https://www.shangmayuan.com/a/5cc58cd90d0a481ba3bb4e0c.html
http://www.zttang.com/blog/article/2019/12/11/43.html
Oracle 19c十大新特性
https://blog.csdn.net/bisal/article/details/104013036
20c
Oracle Data Guard快速启动故障切换 - fast-start failover(FSFO)
http://blog.itpub.net/28211342/viewspace-2138894/
https://blog.csdn.net/shiyu1157758655/article/details/55504518
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/31397003/viewspace-2691675/ ，如需转载，请注明出处，否则将追究法律责任。
