以下表格中收集了Oracle数据字典中几乎所有的视图或别名，至于每个视图或别名的字段请用‘Describe’语句来查询。
命名说明：
Oracle数据字典中，对象名称多数以"USER."，"ALL."，"DBA."为前缀"USER."视图中记录通常记录执行查询的帐户所拥有的对象的信息，"ALL."视图中记录包括"USER"记录和授权至PUBLIC或用户的对象的信息，"DBA."视图包含所有数据库对象，而不管其所有者。
使用举例：
select * from dba_data_files
查询表空间的信息(当前用户必须拥有DBA角色)
select owner , object_name ,object_type from all_objects
查询某一用户下的所有表、过程、函数等信息
视图名 描述 ALL_CATALOG All tables, views, synonyms, sequences accessible to the user
ALL_COL_COMMENTS Comments on columns of accessible tables and views
ALL_COL_GRANTS_MADE Grants on columns for which the user is owner or grantor
ALL_COL_GRANTS_RECD Grants on columns for which the user or PUBLIC is the grantee
ALL_COL_PRIVS Grants on columns for which the user is the grantor, grantee, owner, or an
enabled role or PUBLIC is the grantee
ALL_COL_PRIVS_MADE Grants on columns for which the user is owner or grantor
ALL_COL_PRIVS_RECD Grants on columns for which the user, PUBLIC or enabled role is the grantee
ALL_CONSTRAINTS Constraint definitions on accessible tables
ALL_CONS_COLUMNS Information about accessible columns in constraint definitions
ALL_DB_LINKS Database links accessible to the user
ALL_DEF_AUDIT_OPTS Auditing options for newly created objects
ALL_DEPENDENCIES Dependencies to and from objects accessible to the user
ALL_ERRORS Current errors on stored objects that user is allowed to create
ALL_INDEXES Descriptions of indexes on tables accessible to the user
ALL_IND_COLUMNS COLUMNs comprising INDEXes on accessible TABLES
ALL_OBJECTS Objects accessible to the user
ALL_REFRESH All the refresh groups that the user can touch
ALL_REFRESH_CHILDREN All the objects in refresh groups, where the user can touch the group
ALL_SEQUENCES 戀敲歡※?????葸???葸??? Description of SEQUENCEs accessible to the user
ALL_SNAPSHOTS Snapshots the user can look at
ALL_SOURCE Current source on stored objects that user is allowed to create
ALL_SYNONYMS All synonyms accessible to the user
ALL_TABLES Description of tables accessible to the user
ALL_TAB_COLUMNS Columns of all tables, views and clusters
ALL_TAB_COMMENTS Comments on tables and views accessible to the user
ALL_TAB_GRANTS_MADE User's grants and grants on user's objects
ALL_TAB_GRANTS_RECD Grants on objects for which the user or PUBLIC is the grantee
ALL_TAB_PRIVS Grants on objects for which the user is the grantor, grantee, owner, or an
enabled role or PUBLIC is the grantee
ALL_TAB_PRIVS_MADE User's grants and grants on user's objects
ALL_TAB_PRIVS_RECD Grants on objects for which the user, PUBLIC or enabled role is the grantee
ALL_TRIGGERS Triggers accessible to the current user
ALL_TRIGGER_COLS Column usage in user's triggers or in triggers on user's tables
ALL_USERS Information about all users of the database
ALL_VIEWS Text of views accessible to the user
USER_AUDIT_CONNECT Audit trail entries for user logons/logoffs
USER_AUDIT_OBJECT Audit trail records for statements concerning objects, specifically: table,
cluster, view, index, sequence, [public] database link, [public] synonym,
procedure, trigger, rollback segment, tablespace, role, user
USER_AUDIT_SESSION
USER_AUDIT_STATEMENT Audit trail records concerning grant, revoke, audit, noaudit and alter
system
USER_AUDIT_TRAIL Audit trail entries relevant to the user
USER_CATALOG Tables, Views, Synonyms and Sequences owned by the user
USER_CLUSTERS Descriptions of user's own clusters
USER_CLU_COLUMNS Mapping of table columns to cluster columns
USER_COL_COMMENTS Comments on columns of user's tables and views
USER_COL_GRANTS Grants on columns for which the user is the owner, grantor or grantee
USER_COL_GRANTS_MADE All grants on columns of objects owned by the user
USER_COL_GRANTS_RECD Grants on columns for which the user is the grantee
USER_COL_PRIVS Grants on columns for which the user is the owner, grantor or grantee
USER_COL_PRIVS_MADE All grants on columns of objects owned by the user
USER_COL_PRIVS_RECD Grants on columns for which the user is the grantee
USER_CONSTRAINTS Constraint definitions on user's own tables
USER_CONS_COLUMNS Information about accessible columns in constraint definitions
USER_CROSS_REFS Cross references for user's views and synonyms
USER_DB_LINKS Database links owned by the user
USER_DEPENDENCIES Dependencies to and from a users objects
USER_ERRORS Current errors on stored objects owned by the user
USER_EXTENTS Extents comprising segments owned by the user
USER_FREE_SPACE Free extents in tablespaces accessible to the user
USER_INDEXES Description of the user's own indexes
USER_IND_COLUMNS COLUMNs comprising user's INDEXes or on user's TABLES
USER_JOBS All jobs owned by this user
USER_OBJECTS Objects owned by the user
USER_OBJECT_SIZE Sizes, in bytes, of various pl/sql objects
USER_OBJ_AUDIT_OPTS Auditing options for user's own tables and views
USER_REFRESH All the refresh groups
USER_REFRESH_CHILDREN All the objects in refresh groups, where the user owns the
refresh group
USER_RESOURCE_LIMITS Display resource limit of the user
USER_ROLE_PRIVS Roles granted to current user
USER_SEGMENTS Storage allocated for all database segments
USER_SEQUENCES Description of the user's own SEQUENCEs
USER_SNAPSHOTS Snapshots the user can look at
USER_SNAPSHOT_LOGS All snapshot logs owned by the user
USER_SOURCE Source of stored objects accessible to the user
USER_SYNONYMS The user's private synonyms
USER_SYS_PRIVS System privileges granted to current user
USER_TABLES Description of the user's own tables
USER_TABLESPACES Description of accessible tablespaces
USER_TAB_AUDIT_OPTS Auditing options for user's own tables and views
USER_TAB_COLUMNS Columns of user's tables, views and clusters
USER_TAB_COMMENTS Comments on the tables and views owned by the user
USER_TAB_GRANTS Grants on objects for which the user is the owner, grantor or grantee
USER_TAB_GRANTS_MADE All grants on objects owned by the user
USER_TAB_GRANTS_RECD Grants on objects for which the user is the grantee
USER_TAB_PRIVS Grants on objects for which the user is the
