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.

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