You are connected using SQL* Plus to a multitenant container database (CDB) with SYSDBA privileges and execute the following sequence statements: What is the result of the last SET CONTAINER…

Privilege grants to a local user are irrelevant here because the restriction is architectural - local users cannot cross container boundaries by design, not because of missing privilege grants.

Common users are explicitly permitted to use SET CONTAINER when granted the SET CONTAINER privilege or CREATE SESSION on the target container, so this statement is factually incorrect.

Local users are created within a specific PDB and their sessions are scoped exclusively to that PDB by design. The ALTER SESSION SET CONTAINER command is a CDB-level operation reserved for common users who exist across the entire CDB. Because the user in this scenario is a local user, the statement fails regardless of any privileges that may have been granted within the PDB.

PDB$SEED can be a valid target for SET CONTAINER under certain conditions; the failure in this scenario is caused by the user being a local user, not by any inherent restriction on using PDB$SEED as the target.