Just a quick note as I play with CDB/PDB.
No more triggers!
PDB State Management Across CDB
select con_name, instance_name, state from DBA_PDB_SAVED_STATES;
alter pluggable database PDB1 SAVE STATE;
alter pluggable database ALL SAVE STATE;
alter pluggable database ALL DISCARD STATE;
alter pluggable database ALL OPEN;
startup force mount exclusive restrict;
drop database;
Drop database still does not clean up ADR.
[19:32]oracle@arrow:cdb12c:/u01/app/oracle/product/12.1.0.2/db_1/sqlplus/admin
$ sysdba
SQL*Plus: Release 12.1.0.2.0 Production on Tue Jul 19 19:32:38 2016
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
CDB$ROOT:(SYS@cdb12c):PRIMARY> show con_name
CON_NAME
------------------------------
CDB$ROOT
CDB$ROOT:(SYS@cdb12c):PRIMARY> show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 READ WRITE NO
4 PDB2 MOUNTED
CDB$ROOT:(SYS@cdb12c):PRIMARY> select con_name, instance_name, state from DBA_PDB_SAVED_STATES;
no rows selected
CDB$ROOT:(SYS@cdb12c):PRIMARY> alter pluggable database all open;
Pluggable database altered.
CDB$ROOT:(SYS@cdb12c):PRIMARY> show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 READ WRITE NO
4 PDB2 READ WRITE NO
CDB$ROOT:(SYS@cdb12c):PRIMARY> alter pluggable database all SAVE state;
Pluggable database altered.
CDB$ROOT:(SYS@cdb12c):PRIMARY> select con_name, instance_name, state from DBA_PDB_SAVED_STATES;
CON_NAME INSTANCE_NAME STATE
-------- ------------- --------------
PDB2 cdb12c OPEN
PDB1 cdb12c OPEN
CDB$ROOT:(SYS@cdb12c):PRIMARY> startup force;
ORACLE instance started.
Total System Global Area 1073741824 bytes
Fixed Size 2932632 bytes
Variable Size 713031784 bytes
Database Buffers 352321536 bytes
Redo Buffers 5455872 bytes
Database mounted.
Database opened.
CDB$ROOT:(SYS@cdb12c):PRIMARY> show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 READ WRITE NO
4 PDB2 READ WRITE NO
CDB$ROOT:(SYS@cdb12c):PRIMARY> alter pluggable database all DISCARD state;
Pluggable database altered.
CDB$ROOT:(SYS@cdb12c):PRIMARY> select con_name, instance_name, state from DBA_PDB_SAVED_STATES;
no rows selected
CDB$ROOT:(SYS@cdb12c):PRIMARY> startup force;
ORACLE instance started.
Total System Global Area 1073741824 bytes
Fixed Size 2932632 bytes
Variable Size 713031784 bytes
Database Buffers 352321536 bytes
Redo Buffers 5455872 bytes
Database mounted.
Database opened.
CDB$ROOT:(SYS@cdb12c):PRIMARY> show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 MOUNTED
4 PDB2 MOUNTED
CDB$ROOT:(SYS@cdb12c):PRIMARY> startup force mount exclusive restrict;
ORACLE instance started.
Total System Global Area 1073741824 bytes
Fixed Size 2932632 bytes
Variable Size 713031784 bytes
Database Buffers 352321536 bytes
Redo Buffers 5455872 bytes
Database mounted.
CDB$ROOT:(SYS@cdb12c):PRIMARY> !ls /u01/app/oracle/product/12.1.0.2/db_1/dbs
cr_cdb.sql hc_cdb12c.dat hc_tmnt.dat inittmnt.ora lkCDB12C lkTMNT_A orapwcdb12c orapwtmnt spfilecdb12c.ora spfiletmnt.ora
CDB$ROOT:(SYS@cdb12c):PRIMARY> drop database;
Database dropped.
Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options
CDB$ROOT:(SYS@cdb12c):PRIMARY>
CDB$ROOT:(SYS@cdb12c):PRIMARY> exit
[19:39]oracle@arrow:cdb12c:/u01/app/oracle/product/12.1.0.2/db_1/sqlplus/admin
$ ps -ef|grep pmon
oracle 7151 1 0 13:04 ? 00:00:01 ora_pmon_tmnt
oracle 16898 5756 0 19:39 pts/1 00:00:00 grep pmon
[19:39]oracle@arrow:cdb12c:/u01/app/oracle/product/12.1.0.2/db_1/sqlplus/admin
$ ls /u01/app/oracle/product/12.1.0.2/db_1/dbs
cr_cdb.sql hc_cdb12c.dat hc_tmnt.dat inittmnt.ora lkCDB12C lkTMNT_A orapwcdb12c orapwtmnt spfiletmnt.ora
[19:39]oracle@arrow:cdb12c:/u01/app/oracle/product/12.1.0.2/db_1/sqlplus/admin
$ ls /u01/app/oracle/diag/rdbms/
cdb12c tmnt_a
[19:40]oracle@arrow:cdb12c:/u01/app/oracle/product/12.1.0.2/db_1/sqlplus/admin
$
