Oracle show 语句
时间:2022-05-03
本文章向大家介绍Oracle show 语句,主要内容包括33.4. parameter、33.4.2. instance_name、33.4.3. service_name、33.4.4. global_name、33.4.5. db_name、33.4.6. db_domain、33.4.7. sga、33.4.8. size、33.4.9. spfile、33.4.10. cache、33.4.11. Character Set、基本概念、基础应用、原理机制和需要注意的事项等,并结合实例形式分析了其使用技巧,希望通过本文能帮助到大家理解应用这部分内容。
33.4. parameter
33.4.1. db
SQL> show parameter db;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_16k_cache_size big integer 0
db_2k_cache_size big integer 0
db_32k_cache_size big integer 0
db_4k_cache_size big integer 0
db_8k_cache_size big integer 0
db_block_buffers integer 0
db_block_checking string FALSE
db_block_checksum string TYPICAL
db_block_size integer 8192
db_cache_advice string ON
db_cache_size big integer 0
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_create_file_dest 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
db_domain string example.com
db_file_multiblock_read_count integer 128
db_file_name_convert string
db_files integer 200
db_flash_cache_file string
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_flash_cache_size big integer 0
db_flashback_retention_target integer 1440
db_keep_cache_size big integer 0
db_lost_write_protect string NONE
db_name string orcl
db_recovery_file_dest string /opt/oracle/flash_recovery_are
a
db_recovery_file_dest_size big integer 3882M
db_recycle_cache_size big integer 0
db_securefile string PERMITTED
db_ultra_safe string OFF
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_unique_name string orcl
db_writer_processes integer 1
dbwr_io_slaves integer 0
rdbms_server_dn string
standby_archive_dest string ?/dbs/arch
standby_file_management string MANUAL
xml_db_events string enable
33.4.2. instance_name
SQL> show parameter instance_name;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
instance_name string orcl
SQL>
SQL> select instance from v$thread;
INSTANCE
--------------------------------------------------------------------------------
orcl
33.4.3. service_name
SQL> show parameter service_name;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
service_names string orcl.example.com
SQL>
33.4.4. global_name
SQL> select * from global_name;
GLOBAL_NAME
--------------------------------------------------------------------------------
ORCL.EXAMPLE.COM
33.4.5. db_name
SQL> show parameter db_name;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_name string orcl
SQL> select name from v$database;
NAME
---------
ORCL
33.4.6. db_domain
SQL> show parameter db_domain;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_domain string example.com
SQL>
33.4.7. sga
SQL> show parameter sga;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
lock_sga boolean FALSE
pre_page_sga boolean FALSE
sga_max_size big integer 6016M
sga_target big integer 0
33.4.8. size
SQL> show parameter size
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
bitmap_merge_area_size integer 1048576
client_result_cache_size big integer 0
create_bitmap_area_size integer 8388608
db_16k_cache_size big integer 0
db_2k_cache_size big integer 0
db_32k_cache_size big integer 0
db_4k_cache_size big integer 0
db_8k_cache_size big integer 0
db_block_size integer 8192
db_cache_size big integer 0
db_flash_cache_size big integer 0
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_keep_cache_size big integer 0
db_recovery_file_dest_size big integer 3882M
db_recycle_cache_size big integer 0
global_context_pool_size string
hash_area_size integer 131072
java_max_sessionspace_size integer 0
java_pool_size big integer 0
large_pool_size big integer 0
max_dump_file_size string unlimited
object_cache_max_size_percent integer 10
object_cache_optimal_size integer 102400
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
olap_page_pool_size big integer 0
parallel_execution_message_size integer 16384
result_cache_max_size big integer 16064K
sga_max_size big integer 6272M
shared_pool_reserved_size big integer 36909875
shared_pool_size big integer 0
sort_area_retained_size integer 0
sort_area_size integer 65536
streams_pool_size big integer 0
workarea_size_policy string AUTO
33.4.9. spfile
SQL> show parameter spfile ;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
spfile string /opt/oracle/product/11.2.0/dbh
ome_1/dbs/spfilewcsdb.ora
33.4.10. cache
SQL> show parameter cache
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
client_result_cache_lag big integer 3000
client_result_cache_size big integer 0
db_16k_cache_size big integer 0
db_2k_cache_size big integer 0
db_32k_cache_size big integer 0
db_4k_cache_size big integer 0
db_8k_cache_size big integer 0
db_cache_advice string ON
db_cache_size big integer 0
db_flash_cache_file string
db_flash_cache_size big integer 0
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_keep_cache_size big integer 0
db_recycle_cache_size big integer 0
object_cache_max_size_percent integer 10
object_cache_optimal_size integer 102400
result_cache_max_result integer 5
result_cache_max_size big integer 16064K
result_cache_mode string MANUAL
result_cache_remote_expiration integer 0
session_cached_cursors integer 50
33.4.11. Character Set
SQL> select * from V$NLS_VALID_VALUES where parameter='CHARACTERSET' and value like '%UTF%';
PARAMETER VALUE ISDEP CON_ID
---------------------------------------------------------------- ---------------------------------------------------------------- ----- ----------
CHARACTERSET AL24UTFFSS TRUE 0
CHARACTERSET UTF8 FALSE 0
CHARACTERSET UTFE FALSE 0
CHARACTERSET AL32UTF8 FALSE 0
CHARACTERSET AL16UTF16 FALSE 0
SQL> select userenv('language') from dual;
USERENV('LANGUAGE')
----------------------------------------------------
AMERICAN_AMERICA.WE8MSWIN1252
SQL> select * from nls_database_parameters ;
PARAMETER VALUE
-------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------
NLS_RDBMS_VERSION 12.1.0.2.0
NLS_NCHAR_CONV_EXCP FALSE
NLS_LENGTH_SEMANTICS BYTE
NLS_COMP BINARY
NLS_DUAL_CURRENCY $
NLS_TIMESTAMP_TZ_FORMAT DD-MON-RR HH.MI.SSXFF AM TZR
NLS_TIME_TZ_FORMAT HH.MI.SSXFF AM TZR
NLS_TIMESTAMP_FORMAT DD-MON-RR HH.MI.SSXFF AM
NLS_TIME_FORMAT HH.MI.SSXFF AM
NLS_SORT BINARY
NLS_DATE_LANGUAGE AMERICAN
NLS_DATE_FORMAT DD-MON-RR
NLS_CALENDAR GREGORIAN
NLS_NUMERIC_CHARACTERS .,
NLS_NCHAR_CHARACTERSET AL16UTF16
NLS_CHARACTERSET WE8MSWIN1252
NLS_ISO_CURRENCY AMERICA
NLS_CURRENCY $
NLS_TERRITORY AMERICA
NLS_LANGUAGE AMERICAN
20 rows selected.
SQL> SELECT * FROM v$nls_parameters;
PARAMETER VALUE CON_ID
---------------------------------------------------------------- ---------------------------------------------------------------- ----------
NLS_LANGUAGE AMERICAN 0
NLS_TERRITORY AMERICA 0
NLS_CURRENCY $ 0
NLS_ISO_CURRENCY AMERICA 0
NLS_NUMERIC_CHARACTERS ., 0
NLS_CALENDAR GREGORIAN 0
NLS_DATE_FORMAT DD-MON-RR 0
NLS_DATE_LANGUAGE AMERICAN 0
NLS_CHARACTERSET WE8MSWIN1252 0
NLS_SORT BINARY 0
NLS_TIME_FORMAT HH.MI.SSXFF AM 0
NLS_TIMESTAMP_FORMAT DD-MON-RR HH.MI.SSXFF AM 0
NLS_TIME_TZ_FORMAT HH.MI.SSXFF AM TZR 0
NLS_TIMESTAMP_TZ_FORMAT DD-MON-RR HH.MI.SSXFF AM TZR 0
NLS_DUAL_CURRENCY $ 0
NLS_NCHAR_CHARACTERSET AL16UTF16 0
NLS_COMP BINARY 0
NLS_LENGTH_SEMANTICS BYTE 0
NLS_NCHAR_CONV_EXCP FALSE 0
19 rows selected.
SQL> SELECT * FROM v$nls_valid_values;
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