本文涉转载自 https://blog.csdn.net/u010692693/article/details/73826193
测试升级步骤正确无误，注意本文中涉及到2个脚本，仅付费用户可以获取.
1. dbupgdiag.zip 为升级诊断脚本，检查数据库是否符合升级标准.
2. DBMS_DST_scriptsV1.9.zip 为时区升级脚本，用于数据库的时区升级.
Complete checklist for Manual Upgrade for Multitenant Architecture Oracle Databases from 12.1.x.x to 12.2..x.x (文档 ID 2173144.1)
Complete Checklist for Manual Upgrades to Non-CDB Oracle Database 12c Release 2 (12.2) (文档 ID 2173141.1)
Updating the RDBMS DST version in 12c Release 1 (12.1.0.1 and up) using DBMS_DST (文档 ID 1509653.1)
继续阅读“Oracle 11.2.0.4升级12.2.0.1详细步骤”