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CREATE TABLE SYSTEM.LOGIN_LOG
(
    SESSION_ID                     NUMBER(8,0) NOT NULL,
    LOGIN_ON_TIME                  DATE,
    LOGIN_OFF_TIME                 DATE,
    USER_IN_DB                     VARCHAR2(50),
    MACHINE                        VARCHAR2(50),
    IP_ADDRESS                     VARCHAR2(20),
    RUN_PROGRAM                    VARCHAR2(50)
)
PCTFREE 10
PCTUSED 40
MAXTRANS 255
TABLESPACE SYSTEM
STORAGE(INITIAL 64K MINEXTENTS 1 MAXEXTENTS 2147483645 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
NOCACHE
LOGGING
/
COMMENT ON TABLE SYSTEM.LOGIN_LOG IS 'µÇ¼ÈÕÖ¾'
/
COMMENT ON COLUMN SYSTEM.LOGIN_LOG.SESSION_ID IS 'sessionid'
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COMMENT ON COLUMN SYSTEM.LOGIN_LOG.LOGIN_ON_TIME IS 'µÇ¼ʱ¼ä'
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COMMENT ON COLUMN SYSTEM.LOGIN_LOG.LOGIN_OFF_TIME IS 'µÇ³öʱ¼ä'
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COMMENT ON COLUMN SYSTEM.LOGIN_LOG.USER_IN_DB IS 'µÇ¼µÄDB User'
/
COMMENT ON COLUMN SYSTEM.LOGIN_LOG.MACHINE IS '»úÆ÷Ãû'
/
COMMENT ON COLUMN SYSTEM.LOGIN_LOG.IP_ADDRESS IS 'IPµØÖ·'
/
COMMENT ON COLUMN SYSTEM.LOGIN_LOG.RUN_PROGRAM IS '½ÓÈë³ÌÐò'
/
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version: 10.2.0.1
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ALTER TABLE SCHEMA.PREFIX_INFO ADD (
CONSTRAINT PK_PREFIX_INFO PRIMARY KEY (INFO_ID));
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alter table schema.prefix_info add constraint prefix_info_pkey primary key(info_id);
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oracle ÈÕ³£Ê¹Óù¦Äܼ¯

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sqlplus> col parameter format a30
sqlplus> col value format a30
sqlplus> select * from nls_database_parameter
PARAMETER                      VALUE
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...
NLS_CH ......
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