You are required to migrate your 11.2.0.3 database as a pluggable database (PDB) to a multitenant container database (CDB).<br /> The following are the possible steps to accomplish this task:<br /> 1. Place all the user-defined tablespace in read-only mode on the source database.<br /> 2. Upgrade the source database to a 12c version.<br /> 3. Create a new PDB in the target container database.<br /> 4. Perform a full transportable export on the source database with the VERSION parameter set to 12 using the expdp utility.<br /> 5. Copy the associated data files and export the dump file to the desired location in the target database.<br /> 6. Invoke the Data Pump import utility on the new PDB database as a user with the DATAPUMP_IMP_FULL_DATABASE role and specify the full transportable import options.<br /> 7. Synchronize the PDB on the target container database by using the DBMS_PDS.SYNC_ODB function.<br /> Identify the correct order of the required steps.()<p> You are required to migrat
A、A.2,1,3,4,5,6
B、B.1,3,4,5,6,7
C、C.1,4,3,5,6,7
D、D.2,1,3,4,5,6,7
E、E.1,5,6,4,3,2