官方说明：
ORACLE有关授权的要求
https://www.oracle.com/database/technologies/standard-edition-2-faq.html
Oracle Database SE2 can be licensed on servers with a maximum of 2 sockets.
SE2也就是我们采购的Oracle Database Standard Edition 2
ORACLE官网讨论
https://community.oracle.com/tech/developers/discussion/4021879/se2-license-clarification
SE2 is limited to be deployed on 2-socket servers only. And physically removing 2 CPUs from a 4-socket-machine does not satisfy the license agreement.
SE2 只允许部署到2CPU服务器上（4 CPU插槽的服务器上只安装2 CPU 也是违规）
参考资料：
https://www.oracle.com/assets/databaselicensing-070584.pdf
https://docs.oracle.com/database/121/DBLIC/editions.htm#DBLIC116 特性列表
http://blog.itpub.net/31098809/viewspace-2155325/ 不要用企业版
https://blog.csdn.net/huoyan98/article/details/108842131 如何安装Socket用SQL
https://blog.dbi-services.com/oracle-standard-edition-on-aws-a-socket-arithmetic/
2 SE2 processor licences = 1 server = 2 sockets = 8 AWS vCPU
https://blog.pythian.com/oracle-standard-edition-has-no-multi-core-licensing-restrictions/
https://mustafakalayci.me/2020/04/22/be-careful-on-standard-edition-2-cpu-licensing/
this license says you can have only 1 CPU socket on the machine it does not matter how many core it has!
https://www.oracle.com/us/corporate/contracts/processor-core-factor-table-070634.pdf
oracle Processor Core Factor Table
https://community.spiceworks.com/topic/1800162-licensing-oracle-database-std-edition-2-on-vmware-cluster-no-drs
to read vmwar而虚拟化
https://wintelguy.com/oracle-db-licensing-calc.pl
非官方授权计算
http://bbs.chinaunix.net/thread-3633104-1-1.html
Oracle Licensing:http://www.orafaq.com/wiki/Oracle_Licensing
Oracle Technology Global Price List：http://www.oracle.com/us/corporate/pricing/technology-price-list-070617.pdf
Oracle Price Lists: http://www.oracle.com/us/corporate/pricing/price-lists/index.html
Oracle产品的FAQ :http://www.leiansoft.com/News/Content/1226/
Oracle Support：http://www.orafaq.com/wiki/Oracle_Support
