Today, verify that Oracle is restored from a high version backup to a low version
Communicate with Fangshen (double or him) and say that you can use the version parameter ... and then engage in ...
expdp system/Test6530@ora12cr2 schemas=gscloud2003b4 directory=dir dumpfile=gscloud2003b4_version11204.dmp logfile=20200414.txt version=11.2.0
But when you need to pay attention, because oracle12c increases the identifier length, there will be a bunch of prompt messages when export
Some information may need to be rebuilt.
