SQL>conn / as sysdba
SQL> show parameter cluster
NAME TYPE VALUE
———————————— ———– ——————————
cluster_database boolean TRUE
cluster_database_instances integer 2
cluster_interconnects string
SQL> select * from nls_database_parameters where parameter=’NLS_CHARACTERSET’;
PARAMETER
——————————
VALUE
——————————————————————————–
NLS_CHARACTERSET
AL32UTF8
SQL> shu immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount
ORACLE instance started.
Total System Global Area 6.2934E+10 bytes
Fixed Size 2268712 bytes
Variable Size 6039798232 bytes
Database Buffers 5.6774E+10 bytes
Redo Buffers 118157312 bytes
Database mounted.
SQL> alter system enable restricted session;
System altered.
SQL> show parameter job_queue_processes;
NAME TYPE VALUE
———————————— ———– ——————————
job_queue_processes integer 1000
SQL> show parameter aq_tm_processes;
NAME TYPE VALUE
———————————— ———– ——————————
aq_tm_processes integer 1
SQL> alter system set job_queue_processes=0;
System altered.
SQL> alter system set aq_tm_processes=0;
System altered.
SQL> alter database open;
Database altered.
SQL> alter database character set ZHS16GBK;
alter database character set ZHS16GBK
*
ERROR at line 1:
ORA-12712: new character set must be a superset of old character set
SQL> alter database character set internal_use ZHS16GBK;
alter database character set internal_use ZHS16GBK
*
ERROR at line 1:
ORA-12720: operation requires database is in EXCLUSIVE mode
SQL> alter system set cluster_database=FALSE scope=spfile sid=’*’;
System altered.
SQL> shu immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup restrict
ORACLE instance started.
Total System Global Area 6.2934E+10 bytes
Fixed Size 2268712 bytes
Variable Size 6039798232 bytes
Database Buffers 5.6774E+10 bytes
Redo Buffers 118157312 bytes
Database mounted.
Database opened.
SQL> alter database character set internal_use ZHS16GBK;
Database altered.
SQL> shu immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.
Total System Global Area 6.2934E+10 bytes
Fixed Size 2268712 bytes
Variable Size 6039798232 bytes
Database Buffers 5.6774E+10 bytes
Redo Buffers 118157312 bytes
Database mounted.
Database opened.
SQL> select * from nls_database_parameters where parameter=’NLS_CHARACTERSET’;
PARAMETER
——————————
VALUE
——————————————————————————–
NLS_CHARACTERSET
ZHS16GBK
SQL> alter system set cluster_database=TRUE scope=spfile sid=’*’;
System altered.
SQL> shu immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> alter system set job_queue_processes=1000;
alter system set job_queue_processes=1000
*
ERROR at line 1:
ORA-01034: ORACLE not available
Process ID: 8833
Session ID: 2271 Serial number: 3
SQL> startup mount
ORACLE instance started.
Total System Global Area 6.2934E+10 bytes
Fixed Size 2268712 bytes
Variable Size 6039798232 bytes
Database Buffers 5.6774E+10 bytes
Redo Buffers 118157312 bytes
Database mounted.
SQL> alter system set job_queue_processes=1000;
System altered.
SQL> show parameter aq
NAME TYPE VALUE
———————————— ———– ——————————
aq_tm_processes integer 0
SQL> alter system set aq_tm_processes=1;
System altered.
SQL> alter database open;
Database altered.
SQL> show parameter cluster_database
NAME TYPE VALUE
———————————— ———– ——————————
cluster_database boolean TRUE
cluster_database_instances integer 2
SQL> select * from nls_database_parameters where parameter=’NLS_CHARACTERSET’;
PARAMETER
——————————
VALUE
——————————————————————————–
NLS_CHARACTERSET
ZHS16GBK
SQL>
