CDB PDB 在mount 下 service状态

GOAL

How the CDB Database services and PDB Database services registers with the listener in different Db modes. ( open mode & mount mode ) 
 

SOLUTION

Condition 1 : CDB in mount mode : 

a) When a CDB is in mounted mode, there are 2 other components remains in mount mode

CDB Mount mode :

select cdb,name,open_mode from v$database;SQL>

CDB NAME OPEN_MODE

--- --------- --------------------

YES ORCL1220 MOUNTED

PDB$SEED and PDB also in mount mode :

select name,open_mode from v$pdbs;

NAME OPEN_MODE

--------------- ---------------

PDB$SEED MOUNTED

PDB1 MOUNTED

Check the DB_Active Services :

select con_id,service_id,name,network_name,pdb from v$services;

CON_ID SERVICE_ID NAME NETWORK_NAME PDB

----------- ---------- -------------------- -------------------- ---------------

1 0 orcl12201cdbXDB CDB$ROOT

1 0 SYS$BACKGROUND CDB$ROOT

1 0 SYS$USERS CDB$ROOT

1 0 orcl12201cdb orcl12201cdb CDB$ROOT

Result :

Only CDB service-name will get registered to the listener.

The PDB remains in mount mode and none of the PDB-Service can be registered to the listener as CDB is in mount mode.

Listener status LISTENER :

LSNRCTL for Linux: Version 12.2.0.1.0 - Production on 12-APR-2019 14:58:04

Copyright (c) 1991, 2016, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=extproc)))

STATUS of the LISTENER

------------------------

Alias LISTENER

Version TNSLSNR for Linux: Version 12.2.0.1.0 - Production

Start Date 12-APR-2019 14:12:58

Uptime 0 days 0 hr. 45 min. 5 sec

Trace Level off

Security ON: Local OS Authentication

SNMP OFF

Listener Parameter File /refresh/home/app/12.2.0.1/oracle/product/12.2.0.1/dbhome3/network/admin/listener.ora

Listener Log File /refresh/home/app/12.2.0.1/oracle/diag/tnslsnr//listener/alert/log.xml

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=extproc)))

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=.oracle.com)(PORT=1521)))

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcps)(HOST=.oracle.com)(PORT=1530)))

Services Summary...

Service "extproc" has 1 instance(s).

Instance "extproc", status UNKNOWN, has 1 handler(s) for this service...

Service "orcl12201cdb" has 1 instance(s). ==============================================> Only CDB service-name will get registered to the listener

Instance "orcl12201cdb", status READY, has 1 handler(s) for this service...

Condition 2: CDB is open_mode: 

 b) When the CDB is in open mode ( read-write or read-only ) then the PDB-service mode are still in mount mode or to their respective saved_state

However the PDB-services becomes active and registers with the listener with the help of LREG process.

CDB Mode Check :

select cdb,name,open_mode from v$database;

CDB  NAME      OPEN_MODE

--- --------- --------------------

YES ORCL1220 READ WRITE

PDB Mode Check :

select name,open_mode from v$pdbs;SQL>

NAME OPEN_MODE

-------------------- ---------------

PDB$SEED READ ONLY

PDB1 MOUNTED

Check the DB Active Services :

select con_id,service_id,name,network_name,pdb from v$services;

SQL>CON_ID SERVICE_ID NAME NETWORK_NAME PDB

----------- ---------- -------------------- -------------------- ---------------

1 1 SYS$BACKGROUND CDB$ROOT

1 2 SYS$USERS CDB$ROOT

1 5 orcl12201cdbXDB orcl12201cdbXDB CDB$ROOT

3 0 pdb1 pdb1 PDB1

1 6 orcl12201cdb orcl12201cdb CDB$ROOT

PDB service is active now though the PDB is in mount mode

LISTENER STATUS :

LSNRCTL for Linux: Version 12.2.0.1.0 - Production on 12-APR-2019 15:17:01

Copyright (c) 1991, 2016, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=extproc)))

STATUS of the LISTENER

------------------------

Alias LISTENER

Version TNSLSNR for Linux: Version 12.2.0.1.0 - Production

Start Date 12-APR-2019 14:12:58

Uptime 0 days 1 hr. 4 min. 3 sec

Trace Level off

Security ON: Local OS Authentication

SNMP OFF

Listener Parameter File /refresh/home/app/12.2.0.1/oracle/product/12.2.0.1/dbhome3/network/admin/listener.ora

Listener Log File /refresh/home/app/12.2.0.1/oracle/diag/tnslsnr//listener/alert/log.xml

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=extproc)))

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=.oracle.com)(PORT=1521)))

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcps)(HOST=.oracle.com)(PORT=1530)))

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=.oracle.com)(PORT=2205))(Presentation=HTTP)(Session=RAW))

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcps)(HOST=.oracle.com)(PORT=5505))(Security=(my_wallet_directory=/home/app/12.2.0.1/oracle/admin/orcl12201cdb/xdb_wallet))(Presentation=HTTP)(Session=RAW))

Services Summary...

Service "5779b9ed9b0630ade053c432410af1b4" has 1 instance(s).

Instance "orcl12201cdb", status READY, has 1 handler(s) for this service...

Service "extproc" has 1 instance(s).

Instance "extproc", status UNKNOWN, has 1 handler(s) for this service...

Service "orcl12201cdb" has 1 instance(s). ================================================>CDB service-name will get registered to the listener

Instance "orcl12201cdb", status READY, has 1 handler(s) for this service...

Service "orcl12201cdbXDB" has 1 instance(s).

Instance "orcl12201cdb", status READY, has 1 handler(s) for this service...

Service "pdb1" has 1 instance(s). ================================================> PDB service-name will get registered to the listener

Instance "orcl12201cdb", status READY, has 1 handler(s) for this service...

The command completed successfully