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Multitenant Architecture Diagram
listener.ora
CDB ResourcePlan
PDB _1 PDB_nCDB Instance
PDB_n
CDBViews
CDB_SERVICES
DBA_OBJECTS
. .. . . AWRDBMS_*
Dictionary Object Definition(Metadata)Dictionary
Object DataOBJ$
ApplicationTempfilesSYSTEM SYSAUX
PDB Datafiles
PDB ResourcePlan
PDB ResourcePlan
. .OBJ$
PDB_1
( CDB$ROOT )Root Database
Multitenant Container Database (CDB)
CDB
Inst
ance Background
processes Alert log SPFILEWallet
Foreground processes
Common User
Common Role
Common Privilege
Met
adat
a -lin
k Object-links
. .
Fast Inter-Pluggable Database (PDB) Database Link
...
SGAPDBid2PDBid1
PDBid2PDBid1
PDBid1
PDBid1 PDBid2
PDBid2
PDBid2
PDBid2PDBid1
PDBid1
PDBid1
Local Privilege
C##...SYS...
DBA, CDB_DBA...C##...
ApplicationTempfilesSYSTEM SYSAUX
Common User
LocalUser
Common Role
Local Role
Local Privilege
Common User
LocalUser
Common Role
Local Role
Local Privilege
OBJ$
PDB Datafiles
SYSTEM SYSAUX
Tempfile
Common User
. .OBJ$
PDB$SEED
Controlfiles
Redo logfiles Datafiles
SYSTEM
SYSAUX UndoTempfilesApplicationFlashback
logsArchived
redo log files
Root Files
Change Tracking
file
