Oracle create pdb manager user I create user C##ADMIN in database for manage pdbs .     

sqlplsqlplus sys/rootpass@172.17.0.2/orcl as sysdba

SQL*Plus: Release 12.1.0.2.0 Production on Sat May 26 15:17:09 2018

Copyright (c) 1982, 2014, Oracle.  All rights reserved.


Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options

SQL&gt; create user C##ADMIN identified by adminpass container=all ;

User created.

SQL&gt; GRANT CREATE SESSION, SYSOPER,PDB_DBA,DBA, CREATE PLUGGABLE DATABASE TO c##admin CONTAINER=ALL ;

Grant succeeded.

SQL&gt; 


My problem is C##ADMIN user can not list pdbs !      

sqlplus C##admin/adminpass@172.17.0.2/orcl

SQL*Plus: Release 12.1.0.2.0 Production on Sat May 26 15:20:14 2018

Copyright (c) 1982, 2014, Oracle.  All rights reserved.

Last Successful login time: Sat May 26 2018 15:17:32 +04:30

Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options

SQL&gt; select pdb_name,status from cdb_pdbs;

no rows selected

SQL&gt; 


Which permission is forgotten?
How the Oracle Multitenant Option Affects Privileges


  A common user connected to the root can see metadata pertaining to
  PDBs by way of the container data objects (for example, multitenant
  container database (CDB) views and V$ views) in the root, provided
  that the common user has been granted privileges required to access
  these views and his CONTAINER_DATA attribute has been set to allow
  seeing data about various PDBs.


SQL&gt; create user C##ADMIN identified by adminpass container=all ;

User created.

SQL&gt; GRANT CREATE SESSION, SYSOPER,PDB_DBA,DBA, CREATE PLUGGABLE DATABASE TO c##admin CONTAINER=ALL ;

Grant succeeded.

SQL&gt; conn C##ADMIN/adminpass
Connected.
SQL&gt; select PDB_NAME from cdb_pdbs;

no rows selected


Granting the required privilege:

SQL&gt; conn / as sysdba
Connected.
SQL&gt; alter user c##admin set container_data=all for cdb_pdbs container=current;

User altered.

SQL&gt; conn C##ADMIN/adminpass
Connected.
SQL&gt; select PDB_NAME from cdb_pdbs;

PDB_NAME
---------
PDB$SEED
PDB1