oracle 数据库状态查询

oracle 数据库状态查询

#切换用户

[root@localhost ~]# su - oracle

#查看环境变量

[oracle@localhost ~]$ echo $ORACLE_SID

orcl

#启动监听

[oracle@localhost ~]$ lsnrctl start

#登录sqlplus

[oracle@localhost ~]$ sqlplus /nolog

SQL*Plus: Release 10.2.0.1.0 - Production on Tue Sep 15 19:21:59 2015

Copyright (c) 1982, 2005, Oracle. All rights reserved.

#登录数据库

SQL> connect / as sysdba

Connected to an idle instance.

#启动数据库

SQL> startup

ORACLE instance started.

Total System Global Area 608174080 bytes

Fixed Size 1220820 bytes

Variable Size 171970348 bytes

Database Buffers 427819008 bytes

Redo Buffers 7163904 bytes

Database mounted.

Database opened.

#查看数据库版本

SQL> select * from v$version;

BANNER

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

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod

PL/SQL Release 10.2.0.1.0 - Production

CORE 10.2.0.1.0 Production

TNS for Linux: Version 10.2.0.1.0 - Production

NLSRTL Version 10.2.0.1.0 - Production

#查看是否开了归档，测试环境没有开

SQL> archive log list

Database log mode No Archive Mode

Automatic archival Disabled

Archive destination USE_DB_RECOVERY_FILE_DEST

Oldest online log sequence 1

Current log sequence 3

#查看数据库状态

SQL> select * from v$database;

#查看数据库的控制文件，位置

SQL> select * from v$controlfile;

STATUS

-------

NAME

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

IS_ BLOCK_SIZE FILE_SIZE_BLKS

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

/u01/app/oracle/oradata/orcl/control01.ctl

NO 16384 430

/u01/app/oracle/oradata/orcl/control02.ctl

NO 16384 430

STATUS

-------

NAME

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

IS_ BLOCK_SIZE FILE_SIZE_BLKS

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

/u01/app/oracle/oradata/orcl/control03.ctl

NO 16384 430

#查看数据库数据文件状态

SQL> select * from v$datafile;

#查看数据库日志文件，位置

SQL> select * from v$logfile;

GROUP# STATUS TYPE

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

MEMBER

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

IS_

---

3 ONLINE

/u01/app/oracle/oradata/orcl/redo03.log

NO

2 ONLINE

/u01/app/oracle/oradata/orcl/redo02.log

NO

GROUP# STATUS TYPE

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

MEMBER

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

IS_

---

1 STALE ONLINE

/u01/app/oracle/oradata/orcl/redo01.log

NO

#查看实例内存情况，sga

SQL> show parameter sga

NAME TYPE VALUE

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

lock_sga boolean FALSE

pre_page_sga boolean FALSE

sga_max_size big integer 580M

sga_target big integer 580M

SQL> select * from v$logfile;

GROUP# STATUS TYPE

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

MEMBER

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

IS_

---

3 ONLINE

/u01/app/oracle/oradata/orcl/redo03.log

NO

2 ONLINE

/u01/app/oracle/oradata/orcl/redo02.log

NO

GROUP# STATUS TYPE

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

MEMBER

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

IS_

---

1 STALE ONLINE

/u01/app/oracle/oradata/orcl/redo01.log

NO

#查看实例内存情况，shared

SQL> show parameter shared

NAME TYPE VALUE

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

hi_shared_memory_address integer 0

max_shared_servers integer

shared_memory_address integer 0

shared_pool_reserved_size big integer 8178892

shared_pool_size big integer 0

shared_server_sessions integer

shared_servers integer 1

#查看实例内存情况，db_cache

SQL> show parameter db_cache

NAME TYPE VALUE

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

db_cache_advice string ON

db_cache_size big integer 0

#查看实例内存情况，log

SQL> show parameter log

NAME TYPE VALUE

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

audit_syslog_level string

db_create_online_log_dest_1 string

db_create_online_log_dest_2 string

db_create_online_log_dest_3 string

db_create_online_log_dest_4 string

db_create_online_log_dest_5 string

log_archive_config string

log_archive_dest string

log_archive_dest_1 string

log_archive_dest_10 string

log_archive_dest_2 string

NAME TYPE VALUE

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

log_archive_dest_3 string

log_archive_dest_4 string

log_archive_dest_5 string

log_archive_dest_6 string

log_archive_dest_7 string

log_archive_dest_8 string

log_archive_dest_9 string

log_archive_dest_state_1 string enable

log_archive_dest_state_10 string enable

log_archive_dest_state_2 string enable

log_archive_dest_state_3 string enable

NAME TYPE VALUE

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

log_archive_dest_state_4 string enable

log_archive_dest_state_5 string enable

log_archive_dest_state_6 string enable

log_archive_dest_state_7 string enable

log_archive_dest_state_8 string enable

log_archive_dest_state_9 string enable

log_archive_duplex_dest string

log_archive_format string %t_%s_%r.dbf

log_archive_local_first boolean TRUE

log_archive_max_processes integer 2

log_archive_min_succeed_dest integer 1

NAME TYPE VALUE

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

log_archive_start boolean FALSE

log_archive_trace integer 0

log_buffer integer 7053312

log_checkpoint_interval integer 0

log_checkpoint_timeout integer 1800

log_checkpoints_to_alert boolean FALSE

log_file_name_convert string

logmnr_max_persistent_sessions integer 1

remote_login_passwordfile string EXCLUSIVE

#查询表空间状况，描述了表空间的空闲大小。

SQL>select * from dba_free_space;

#查询表空间文件位置，及状况。描述了数据库中的数据文件。

SQL>select * from dba_data_files;

#查询表空间，描述了数据库中的表空间。

SQL>select * from dba_tablespaces;

#该语句通过查询dba_free_space，dba_data_files，dba_tablespaces这三个数据字典表，得到了表空间名称，表空间类型，区管理类型，以"兆"为单位的表空间大小，已使用的表空间大小及表空间利用率。

select

a.a1 表空间名称,c.c2 类型,c.c3 区管理,b.b2/1024/1024 表空间大小M,(b.b2-a.a2)/1024/1024 已使用M,substr((b.b2-a.a2)/b.b2*100,1,5) 利用率

from

(select tablespace_name a1, sum(nvl(bytes,0)) a2

from

dba_free_space group by tablespace_name) a,(select tablespace_name b1,sum(bytes) b2

from

dba_data_files group by tablespace_name) b,(select tablespace_name c1,contents c2,extent_management c3 from dba_tablespaces) c

where a.a1=b.b1 and c.c1=b.b1

#该语句通过查询dba_free_space，dba_data_files，dba_tablespaces这三个数据字典表，得到了表空间名称，表空间类型，区管理类型，以"兆"为单位的表空间大小，已使用的表空间大小及表空间利用率。

select

a.a1 tablespacename,c.c2 tablespacetype,c.c3 segmentname,b.b2/1024/1024 tablespacesizeM,(b.b2-a.a2)/1024/1024 usedM,

substr((b.b2-a.a2)/b.b2*100,1,5) usedpersent

from

(select tablespace_name a1, sum(nvl(bytes,0)) a2

from

dba_free_space group by tablespace_name) a,(select tablespace_name b1,sum(bytes) b2

from

dba_data_files group by tablespace_name) b,(select tablespace_name c1,contents c2,extent_management c3 from dba_tablespaces) c

where a.a1=b.b1 and c.c1=b.b1

#查看Oracle数据库中数据文件信息的命令方法

select

b.file_name 物理文件名,b.tablespace_name 表空间,b.bytes/1024/1024 大小M,

(b.bytes-sum(nvl(a.bytes,0)))/1024/1024 已使用M,

substr((b.bytes-sum(nvl(a.bytes,0)))/(b.bytes)*100,1,5) 利用率

from dba_free_space a,dba_data_files b

where a.file_id=b.file_id

group by b.tablespace_name,b.file_name,b.bytes

order by b.tablespace_name

#查看Oracle数据库中数据文件信息的命令方法

select

b.file_name datafileplace,b.tablespace_name tablespacename,b.bytes/1024/1024 tablespacesizeM,

(b.bytes-sum(nvl(a.bytes,0)))/1024/1024 usedM,

substr((b.bytes-sum(nvl(a.bytes,0)))/(b.bytes)*100,1,5) usedpersent

from dba_free_space a,dba_data_files b

where a.file_id=b.file_id

group by b.tablespace_name,b.file_name,b.bytes

order by b.tablespace_name

#查看临时表空间和数据库文件的方法

select

a.TABLESPACE_NAME 表空间名称,b.bytes 大小bytes,b.file_name 数据文件名

from dba_tablespaces a, dba_data_files b

Where a.TABLESPACE_NAME=b.TABLESPACE_NAME and a.CONTENTS='TEMPORARY'

#查看临时表空间和数据库文件的方法

select a.TABLESPACE_NAME tablespacename,b.bytes tablespacesizebytes,b.file_name datafilename

from DBA_TABLESPACES a,DBA_DATA_FILES b

where a.TABLESPACE_NAME=b.TABLESPACE_NAME and a.CONTENTS='TEMPORARY'

#关闭数据库

SQL> shutdown immediate

Database closed.

Database dismounted.

ORACLE instance shut down.

#退出sqlplus

SQL> quit

Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production

With the Partitioning, OLAP and Data Mining options