I am trying to upgrade an 11g (11.2.0.3) database running on Red Hat Enterprise Linux Server release 5.11 to a 12c database running on Red Hat Enterprise Linux Server release 6.6. I am using the Transportable Tablespace export/import method recommended by Oracle. This works fine when the 11g database does not have tablespace encryption implemented (TDE), but when there are encrypted tablespaces, I get an “ORA-28374 typed master key not found in wallet” error during the import and it fails. I copied the wallet from the 11g database to the 12c database per Oracle’s instructions. It’s an auto-login wallet, but I only copied the .p12 file over. (If I copy the .sso file I have more wallet issues). When I do a select * from v$encryption_wallet in the 12c database, it says it’s closed, so I open it. I have an SR open with My Oracle Support and supplied them with all the information they requested, but it’s been days and I haven’t heard a peep from them. Plan B is to do a basic schema export/import but it takes much longer than copying over the data files and doing the transportable tablespace export/import. Has anyone used this method to upgrade from 11 to 12 with encrypted tablespaces? Any input will be appreciated. Thanks, Mary