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Oracle® Database Heterogeneous Connectivity Administrator's Guide
10g Release 2 (10.2)

Part Number B14232-01
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C Data Dictionary Translation Support

Data dictionary information is stored in the non-Oracle system as system tables and is accessed through ODBC or OLE DB application programming interfaces (APIs). This appendix documents data dictionary translation support. It explains how to access non-Oracle data dictionaries, lists Heterogeneous Services data dictionary views, describes how to use supported views and tables, and explains data dictionary mapping.

This appendix contains the following topics:

C.1 Accessing the Non-Oracle Data Dictionary

Accessing a non-Oracle data dictionary table or view is identical to accessing a data dictionary in an Oracle database. You issue a SELECT statement specifying a database link. The Oracle data dictionary view and column names are used to access the non-Oracle data dictionary. Synonyms of supported views are also acceptable.

For example, the following statement queries the data dictionary table ALL_USERS to retrieve all users in the non-Oracle system:

SQL SELECT * FROM all_users@sid1;
 

When you issue a data dictionary access query, the ODBC or OLE DB agent:

  1. Maps the requested table, view, or synonym to one or more ODBC or OLE DB APIs (see Section C.3.1, "Data Dictionary Mapping"). The agent translates all data dictionary column names to their corresponding non-Oracle column names within the query.

  2. Sends the sequence of APIs to the non-Oracle system.

  3. Possibly converts the retrieved non-Oracle data to give it the appearance of the Oracle data dictionary table.

  4. Passes the data dictionary information from the non-Oracle system table to Oracle.

    Note:

    The values returned when querying the Generic Connectivity data dictionary may not be the same as those returned by the Oracle SQL*Plus DESCRIBE command.

C.2 Heterogeneous Services Data Dictionary Views

Heterogeneous Services mapping supports the following list of data dictionary views:


ALL_CATALOG
ALL_COL_COMMENTS
ALL_COL_PRIVS
ALL_COL_PRIVS_MADE
ALL_COL_PRIVS_RECD
ALL_CONSTRAINTS
ALL_CONS_COLUMNS
ALL_DB_LINKS
ALL_DEF_AUDIT_OPTS
ALL_DEPENDENCIES
ALL_ERRORS
ALL_INDEXES
ALL_IND_COLUMNS
ALL_OBJECTS
ALL_SEQUENCES
ALL_MVIEWS
ALL_SOURCE
ALL_SYNONYMS
ALL_TABLES
ALL_TAB_COLUMNS
ALL_TAB_COMMENTS
ALL_TAB_PRIVS
ALL_TAB_PRIVS_MADE
ALL_TAB_PRIVS_RECD
ALL_TRIGGERS
ALL_USERS
ALL_VIEWS
AUDIT_ACTIONS
COLUMN_PRIVILEGES
DBA_CATALOG
DBA_COL_COMMENTS
DBA_COL_PRIVS
DBA_OBJECTS
DBA_ROLES
DBA_ROLE_PRIVS
DBA_SYS_PRIVS
DBA_TABLES
DBA_TAB_COLUMNS
DBA_TAB_COMMENTS
DBA_TAB_PRIVS
DBA_USERS
DICTIONARY
DICT_COLUMNS
DUAL
INDEX_STATS
PRODUCT_USER_PROFILE
RESOURCE_COST
ROLE_ROLE_PRIVS
ROLE_SYS_PRIVS
ROLE_TAB_PRIVS
SESSION_PRIVS
SESSION_ROLES
TABLE_PRIVILEGES
USER_AUDIT_OBJECT
USER_AUDIT_SESSION
USER_AUDIT_STATEMENT
USER_AUDIT_TRAIL
USER_CATALOG
USER_CLUSTERS
USER_CLU_COLUMNS
USER_COL_COMMENTS
USER_COL_PRIVS
USER_COL_PRIVS_MADE
USER_COL_PRIVS_RECD
USER_CONSTRAINTS
USER_CONS_COLUMNS
USER_DB_LINKS
USER_DEPENDENCIES
USER_ERRORS
USER_EXTENTS
USER_FREE_SPACE
USER_INDEXES
USER_IND_COLUMNS
USER_OBJECTS
USER_OBJ_AUDIT_OPTS
USER_RESOURCE_LIMITS
USER_ROLE_PRIVS
USER_SEGMENTS
USER_SEQUENCES
USER_MVIEW_LOGS
USER_SOURCE
USER_SYNONYMS
USER_SYS_PRIVS
USER_TABLES
USER_TABLESPACES
USER_TAB_COLUMNS
USER_TAB_COMMENTS
USER_TAB_PRIVS
USER_TAB_PRIVS_MADE
USER_TAB_PRIVS_RECD
USER_TRIGGERS
USER_TS_QUOTAS
USER_USERS
USER_VIEWS

C.3 Views and Tables Supported by Generic Connectivity

Generic Connectivity supports only the views and tables shown in Table C-1.

If you use an unsupported view, you receive an Oracle error message stating no rows were selected.

If you want to query data dictionary views using SELECT... FROM DBA_*, first connect as Oracle user SYSTEM or SYS. Otherwise, you receive the following error message:

ORA-28506: Parse error in data dictionary translation for %s stored in %s

Using Generic Connectivity, queries of the supported data dictionary tables and views beginning with the characters ALL_ may return rows from the non-Oracle system when you do not have access privileges for those non-Oracle objects. When querying an Oracle database with the Oracle data dictionary, rows are returned only for those objects you are permitted to access.

C.3.1 Data Dictionary Mapping

The tables in this section list Oracle data dictionary view names and the equivalent ODBC or OLE DB APIs used. Table C-1 shows a list of all Oracle data dictionary view names supported by Generic Connectivity.

Table C-1 Generic Connectivity Data Dictionary Mapping

View ODBC API OLE DB API
ALL_CATALOG
SQLTables DBSCHEMA_CATALOGS
ALL_COL_COMMENTS
SQLColumns DBSCHEMA_COLUMNS
ALL_CONS_COLUMNS
SQLPrimaryKeys, SQLForeignKeys DBSCHEMA_PRIMARY_KEYS, DBSCHEMA_FOREIGN_KEYS
ALL_CONSTRAINTS
SQLPrimaryKeys, SQLForeignKeys DBSCHEMA_PRIMARY_KEYS, DBSCHEMA_FOREIGN_KEYS
ALL_IND_COLUMNS
SQLStatistics DBSCHEMA_STATISTICS
ALL_INDEXES
SQLStatistics DBSCHEMA_STATISTICS
ALL_OBJECTS
SQLTables, SQLProcedures, SQLStatistics DBSCHEMA_TABLES, DBSCHEMA_PROCEDURES, DBSCHEMA_STATISTICS
ALL_TAB_COLUMNS
SQLColumns DBSCHEMA_COLUMNS
ALL_TAB_COMMENTS
SQLTables DBSCHEMA_TABLES
ALL_TABLES
SQLStatistics DBSCHEMA_STATISTICS
ALL_USERS
SQLTables DBSCHEMA_TABLES
ALL_VIEWS
SQLTables DBSCHEMA_TABLES
DICTIONARY
SQLTables DBSCHEMA_TABLES
USER_CATALOG
SQLTables DBSCHEMA_TABLES
USER_COL_COMMENTS
SQLColumns DBSCHEMA_COLUMNS
USER_CONS_COLUMNS
SQLPrimaryKeys, SQLForeignKeys DBSCHEMA_PRIMARY_KEYS, DBSCHEMA_FOREIGN_KEYS
USER_CONSTRAINTS
SQLPrimaryKeys, SQLForeignKeys DBSCHEMA_PRIMARY_KEYS, DBSCHEMA_FOREIGN_KEYS
USER_IND_COLUMNS
SQLStatistics DBSCHEMA_STATISTICS
USER_INDEXES
SQLStatistics DBSCHEMA_STATISTICS
USER_OBJECTS
SQLTables, SQLProcedures, SQLStatistics DBSCHEMA_TABLES, DBSCHEMA_PROCEDURES, DBSCHEMA_STATISTICS
USER_TAB_COLUMNS
SQLColumns DBSCHEMA_COLUMNS
USER_TAB_COMMENTS
SQLTables DBSCHEMA_TABLES
USER_TABLES
SQLStatistics DBSCHEMA_STATISTICS
USER_USERS
SQLTables DBSCHEMA_TABLES
USER_VIEWS
SQLTables DBSCHEMA_TABLES

C.3.2 Generic Connectivity Data Dictionary Descriptions

The Generic Connectivity data dictionary tables and views provide the following information:

  • Name, data type, and width of each column

  • The contents of columns with fixed values

In the descriptions that follow, the values in the Null? column may differ from the Oracle data dictionary tables and views. Any default value is shown to the right of an item.

C.3.2.1 ALL_CATALOG

Name Null? Type Value
OWNER NOT NULL VARCHAR2(30) -
TABLE_NAME NOT NULL VARCHAR2(30) -
TABLE_TYPE - VARCHAR2(11) "TABLE" or "VIEW" or SYNONYM

C.3.2.2 ALL_COL_COMMENTS

Name Null? Type Value
OWNER NOT NULL VARCHAR2(30) -
TABLE_NAME NOT NULL VARCHAR2(30) -
COLUMN_NAME NOT NULL VARCHAR2(30) -
COMMENTS - VARCHAR2(4000) NULL

C.3.2.3 ALL_CONS_COLUMNS

Name Null? Type Value
OWNER NOT NULL VARCHAR2(30) -
CONSTRAINT_NAME NOT NULL VARCHAR2(30) -
TABLE_NAME NOT NULL VARCHAR2(30) -
COLUMN_NAME - VARCHAR2(4000) -
POSITION - NUMBER -

C.3.2.4 ALL_CONSTRAINTS

Name Null? Type Value
OWNER NOT NULL VARCHAR2(30) -
CONSTRAINT_NAME NOT NULL VARCHAR2(30) -
CONSTRAINT_TYPE - VARCHAR2(1) "R" or "P"
TABLE_NAME NOT NULL VARCHAR2(30) -
SEARCH_CONDITION - LONG NULL
R_OWNER - VARCHAR2(30) -
R_CONSTRAINT_NAME - VARCHAR2(30) -
DELETE_RULE - VARCHAR2(9) "CASCADE" or "NO ACTION" or "SET NULL"
STATUS - VARCHAR2(8) NULL
DEFERRABLE - VARCHAR2(14) NULL
DEFERRED - VARCHAR2(9) NULL
VALIDATED - VARCHAR2(13) NULL
GENERATED - VARCHAR2(14) NULL
BAD - VARCHAR2(3) NULL
RELY - VARCHAR2(4) NULL
LAST_CHANGE - DATE NULL

C.3.2.5 ALL_IND_COLUMNS

Name Null? Type Value
INDEX_OWNER NOT NULL VARCHAR2(30) -
INDEX_NAME NOT NULL VARCHAR2(30) -
TABLE_OWNER NOT NULL VARCHAR2(30) -
TABLE_NAME NOT NULL VARCHAR2(30) -
COLUMN_NAME - VARCHAR2(4000) -
COLUMN_POSITION NOT NULL NUMBER -
COLUMN_LENGTH NOT NULL NUMBER -
DESCEND - VARCHAR2(4) "DESC" or "ASC"

C.3.2.6 ALL_INDEXES

Name Null? Type Value
OWNER NOT NULL VARCHAR2(30) -
INDEX_NAME NOT NULL VARCHAR2(30) -
INDEX_TYPE - VARCHAR2(27) NULL
TABLE_OWNER NOT NULL VARCHAR2(30) -
TABLE_NAME NOT NULL VARCHAR2(30) -
TABLE_TYPE - CHAR(5) "TABLE"
UNIQUENESS - VARCHAR2(9) "UNIQUE" or "NONUNIQUE"
COMPRESSION - VARCHAR2(8) NULL
PREFIX_LENGTH - NUMBER 0
TABLESPACE_NAME - VARCHAR2(30) NULL
INI_TRANS - NUMBER 0
MAX_TRANS - NUMBER 0
INITIAL_EXTENT - NUMBER 0
NEXT_EXTENT - NUMBER 0
MIN_EXTENTS - NUMBER 0
MAX_EXTENTS - NUMBER 0
PCT_INCREASE - NUMBER 0
PCT_THRESHOLD - NUMBER 0
INCLUDE_COLUMNS - NUMBER 0
FREELISTS - NUMBER 0
FREELIST_GROUPS - NUMBER 0
PCT_FREE - NUMBER 0
LOGGING - VARCHAR2(3) NULL
BLEVEL - NUMBER 0
LEAF_BLOCKS - NUMBER 0
DISTINCT_KEYS - NUMBER
AVG_LEAF_BLOCKS_PER_KEY - NUMBER 0
AVG_DATA_BLOCKS_PER_KEY - NUMBER 0
CLUSTERING_FACTOR - NUMBER 0
STATUS - VARCHAR2(8) NULL
NUM_ROWS - NUMBER 0
SAMPLE_SIZE - NUMBER 0
LAST_ANALYZED - DATE NULL
DEGREE - VARCHAR2(40) NULL
INSTANCES - VARCHAR2(40) NULL
PARTITIONED - VARCHAR2(3) NULL
TEMPORARY - VARCHAR2(1) NULL
GENERATED - VARCHAR2(1) NULL
SECONDARY - VARCHAR2(1) NULL
BUFFER_POOL - VARCHAR2(7) NULL
USER_STATS - VARCHAR2(3) NULL
DURATION - VARCHAR2(15) NULL
PCT_DIRECT_ACCESS - NUMBER 0
ITYP_OWNER - VARCHAR2(30) NULL
ITYP_NAME - VARCHAR2(30) NULL
PARAMETERS - VARCHAR2(1000) NULL
GLOBAL_STATS - VARCHAR2(3) NULL
DOMIDX_STATUS - VARCHAR2(12) NULL
DOMIDX_OPSTATUS - VARCHAR2(6) NULL
FUNCIDX_STATUS - VARCHAR2(8) NULL

C.3.2.7 ALL_OBJECTS

Name Null? Type Value
OWNER NOT NULL VARCHAR2(30) -
OBJECT_NAME NOT NULL VARCHAR2(30) -
SUBOBJECT_NAME - VARCHAR2(30) NULL
OBJECT_ID NOT NULL NUMBER 0
DATA_OBJECT_ID - NUMBER 0
OBJECT_TYPE - VARCHAR2(18) "TABLE" or "VIEW" or "SYNONYM" or "INDEX" or "PROCEDURE"
CREATED NOT NULL DATE NULL
LAST_DDL_TIME NOT NULL DATE NULL
TIMESTAMP - VARCHAR2(19) NULL
STATUS - VARCHAR2(7) NULL
TEMPORARY - VARCHAR2(1) NULL
GENERATED - VARCHAR2(1) NULL
SECONDARY - VARCHAR2(1) NULL

C.3.2.8 ALL_TAB_COLUMNS

Name Null? Type Value
OWNER NOT NULL VARCHAR2(30) -
TABLE_NAME NOT NULL VARCHAR2(30) -
COLUMN_NAME NOT NULL VARCHAR2(30) -
DATA_TYPE - VARCHAR2(106) -
DATA_TYPE_MOD - VARCHAR2(3) NULL
DATA_TYPE_OWNER - VARCHAR2(30) NULL
DATA_LENGTH NOT NULL NUMBER -
DATA_PRECISION - NUMBER -
DATA_SCALE - NUMBER -
NULLABLE - VARCHAR2(1) "Y" or "N"
COLUMN_ID NOT NULL NUMBER -
DEFAULT_LENGTH - NUMBER 0
DATA_DEFAULT - LONG NULL
NUM_DISTINCT - NUMBER 0
LOW_VALUE - RAW(32) NULL
HIGH_VALUE - RAW(32) NULL
DENSITY - NUMBER 0
NUM_NULLS - NUMBER 0
NUM_BUCKETS - NUMBER 0
LAST_ANALYZED - DATE NULL
SAMPLE_SIZE - NUMBER 0
CHARACTER_SET_NAME - VARCHAR2(44) NULL
CHAR_COL_DEC_LENGTH - NUMBER 0
GLOBAL_STATS - VARCHAR2(3) NULL
USER_STATS - VARCHAR2(3) NULL
AVG_COL_LEN - NUMBER 0

C.3.2.9 ALL_TAB_COMMENTS

Name Null? Type Value
OWNER NOT NULL VARCHAR2(30) -
TABLE_NAME NOT NULL VARCHAR2(30) -
TABLE_TYPE - VARCHAR2(11) "TABLE" or "VIEW"
COMMENTS - VARCHAR2(4000) NULL

C.3.2.10 ALL_TABLES

Name Null? Type Value
OWNER NOT NULL VARCHAR2(30) -
TABLE_NAME NOT NULL VARCHAR2(30) -
TABLESPACE_NAME - VARCHAR2(30) NULL
CLUSTER_NAME - VARCHAR2(30) NULL
IOT_NAME - VARCHAR2(30) NULL
PCT_FREE - NUMBER 0
PCT_USED - NUMBER 0
INI_TRANS - NUMBER 0
MAX_TRANS - NUMBER 0
INITIAL_EXTENT - NUMBER 0
NEXT_EXTENT - NUMBER 0
MIN_EXTENTS - NUMBER 0
MAX_EXTENTS - NUMBER 0
PCT_INCREASE - NUMBER 0
FREELISTS - NUMBER 0
FREELIST_GROUPS - NUMBER 0
LOGGING - VARCHAR2(3) NULL
BACKED_UP - VARCHAR2(1) NULL
NUM_ROWS - NUMBER -
BLOCKS - NUMBER -
EMPTY_BLOCKS - NUMBER 0
AVG_SPACE - NUMBER 0
CHAIN_CNT - NUMBER 0
AVG_ROW_LEN - NUMBER 0
AVG_SPACE_FREELIST_BLOCKS - NUMBER 0
NUM_FREELIST_BLOCKS - NUMBER 0
DEGREE - VARCHAR2(10) NULL
INSTANCES - VARCHAR2(10) NULL
CACHE - VARCHAR2(5) NULL
TABLE_LOCK - VARCHAR2(8) NULL
SAMPLE_SIZE - NUMBER 0
LAST_ANALYZED - DATE NULL
PARTITIONED - VARCHAR2(3) NULL
IOT_TYPE - VARCHAR2(12) NULL
TEMPORARY - VARCHAR2(1) NULL
SECONDARY - VARCHAR2(1) NULL
NESTED - VARCHAR2(3) NULL
BUFFER_POOL - VARCHAR2(7) NULL
ROW_MOVEMENT - VARCHAR2(8) NULL
GLOBAL_STATS - VARCHAR2(3) NULL
USER_STATS - VARCHAR2(3) NULL
DURATION - VARHCAR2(15) NULL
SKIP_CORRUPT - VARCHAR2(8) NULL
MONITORING - VARCHAR2(3) NULL

C.3.2.11 ALL_USERS

Name Null? Type Value
USERNAME NOT NULL VARCHAR2(30) -
USER_ID NOT NULL NUMBER 0
CREATED NOT NULL DATE NULL

C.3.2.12 ALL_VIEWS

Name Null? Type Value
OWNER NOT NULL VARCHAR2(30) -
VIEW_NAME NOT NULL VARCHAR2(30) -
TEXT_LENGTH - NUMBER 0
TEXT NOT NULL LONG NULL
TYPE_TEXT_LENGTH - NUMBER 0
TYPE_TEXT - VARCHAR2(4000) NULL
OID_TEXT_LENGTH - NUMBER 0
OID_TEXT - VARCHAR2(4000) NULL
VIEW_TYPE_OWNER - VARCHAR2(30) NULL
VIEW_TYPE - VARCHAR2(30) NULL

C.3.2.13 DICTIONARY

Name Null? Type Value
TABLE_NAME - VARCHAR2(30) -
COMMENTS - VARCHAR2(4000) NULL

C.3.2.14 USER_CATALOG

Name Null? Type Value
TABLE_NAME NOT NULL VARCHAR2(30) -
TABLE_TYPE - VARCHAR2(11) "TABLE" or, "VIEW" or "SYNONYM"

C.3.2.15 USER_COL_COMMENTS

Name Null? Type Value
TABLE_NAME NOT NULL VARCHAR2(30) -
COLUMN_NAME NOT NULL VARCHAR2(30) -
COMMENTS - VARCHAR2(4000) NULL

C.3.2.16 USER_CONS_COLUMNS

Name Null? Type Value
OWNER NOT NULL VARCHAR2(30) -
CONSTRAINT_NAME NOT NULL VARCHAR2(30) -
TABLE_NAME NOT NULL VARCHAR2(30) -
COLUMN_NAME - VARCHAR2(4000) -
POSITION - NUMBER -

C.3.2.17 USER_CONSTRAINTS

Name Null? Type Value
OWNER NOT NULL VARCHAR2(30) -
CONSTRAINT_NAME NOT NULL VARCHAR2(30) -
CONSTRAINT_TYPE - VARCHAR2(1) R or P
TABLE_NAME NOT NULL VARCHAR2(30) -
SEARCH_CONDITION - LONG NULL
R_OWNER - VARCHAR2(30) -
R_CONSTRAINT_NAME - VARCHAR2(30) -
DELETE_RULE - VARCHAR2(9) "CASCADE" or "NOACTION" or "SET NULL"
STATUS - VARCHAR2(8) NULL
DEFERRABLE - VARCHAR2(14) NULL
DEFERRED - VARCHAR2(9) NULL
VALIDATED - VARCHAR2(13) NULL
GENERATED - VARCHAR2(14) NULL
BAD - VARCHAR2(3) NULL
RELY - VARCHAR2(4) NULL
LAST_CHANGE - DATE NULL

C.3.2.18 USER_IND_COLUMNS

Name Null? Type Value
INDEX_NAME - VARCHAR2(30) -
TABLE_NAME - VARCHAR2(30) -
COLUMN_NAME - VARCHAR2(4000) -
COLUMN_POSITION - NUMBER -
COLUMN_LENGTH - NUMBER -
DESCEND - VARCHAR2(4) "DESC" or "ASC"

C.3.2.19 USER_INDEXES

Name Null? Type Value
INDEX_NAME NOT NULL VARCHAR2(30) -
INDEX_TYPE - VARCHAR2(27) NULL
TABLE_OWNER NOT NULL VARCHAR2(30) -
TABLE_NAME NOT NULL VARCHAR2(30) -
TABLE_TYPE - VARCHAR2(11) "TABLE"
UNIQUENESS - VARCHAR2(9) "UNIQUE" or "NONUNIQUE"
COMPRESSION - VARCHAR2(8) NULL
PREFIX_LENGTH - NUMBER 0
TABLESPACE_NAME - VARCHAR2(30) NULL
INI_TRANS - NUMBER 0
MAX_TRANS - NUMBER 0
INITIAL_EXTENT - NUMBER 0
NEXT_EXTENT - NUMBER 0
MIN_EXTENTS - NUMBER 0
MAX_EXTENTS - NUMBER 0
PCT_INCREASE - NUMBER 0
PCT_THRESHOLD - NUMBER 0
INCLUDE_COLUMNS - NUMBER 0
FREELISTS - NUMBER 0
FREELIST_GROUPS - NUMBER 0
PCT_FREE - NUMBER 0
LOGGING - VARCHAR2(3) NULL
BLEVEL - NUMBER 0
LEAF_BLOCKS - NUMBER 0
DISTINCT_KEYS - NUMBER -
AVG_LEAF_BLOCKS_PER_KEY - NUMBER 0
AVG_DATA_BLOCKS_PER_KEY - NUMBER 0
CLUSTERING_FACTOR - NUMBER 0
STATUS - VARCHAR2(8) NULL
NUM_ROWS - NUMBER 0
SAMPLE_SIZE - NUMBER 0
LAST_ANALYZED - DATE NULL
DEGREE - VARCHAR2(40) NULL
INSTANCES - VARCHAR2(40) NULL
PARTITIONED - VARCHAR2(3) NULL
TEMPORARY - VARCHAR2(1) NULL
GENERATED - VARCHAR2(1) NULL
SECONDARY - VARCHAR2(1) NULL
BUFFER_POOL - VARCHAR2(7) NULL
USER_STATS - VARCHAR2(3) NULL
DURATION - VARHCAR2(15) NULL
PCT_DIRECT_ACCESS - NUMBER 0
ITYP_OWNER - VARCHAR2(30) NULL
ITYP_NAME - VARCHAR2(30) NULL
PARAMETERS - VARCHAR2(1000) NULL
GLOBAL_STATS - VARCHAR2(3) NULL
DOMIDX_STATUS - VARCHAR2(12) NULL
DOMIDX_OPSTATUS - VARCHAR2(6) NULL
FUNCIDX_STATUS - VARCHAR2(8) NULL

C.3.2.20 USER_OBJECTS

Name Null? Type Value
OBJECT_NAME - VARCHAR2(128) -
SUBOBJECT_NAME - VARCHAR2(30) NULL
OBJECT_ID - NUMBER 0
DATA_OBJECT_ID - NUMBER 0
OBJECT_TYPE - VARCHAR2(18) "TABLE" or "VIEW" or "SYNONYM" or "INDEX" or "PROCEDURE"
CREATED - DATE NULL
LAST_DDL_TIME - DATE NULL
TIMESTAMP - VARCHAR2(19) NULL
STATUS - VARCHAR2(7) NULL
TEMPORARY - VARCHAR2(1) NULL
GENERATED - VARCHAR2(1) NULL
SECONDARY - VARCHAR2(1) NULL

C.3.2.21 USER_TAB_COLUMNS

Name Null? Type Value
TABLE_NAME NOT NULL VARCHAR2(30) -
COLUMN_NAME NOT NULL VARCHAR2(30) -
DATA_TYPE - VARCHAR2(106) -
DATA_TYPE_MOD - VARCHAR2(3) NULL
DATA_TYPE_OWNER - VARCHAR2(30) NULL
DATA_LENGTH NOT NULL NUMBER -
DATA_PRECISION - NUMBER -
DATA_SCALE - NUMBER -
NULLABLE - VARCHAR2(1) "Y" or "N"
COLUMN_ID NOT NULL NUMBER -
DEFAULT_LENGTH - NUMBER NULL
DATA_DEFAULT - LONG NULL
NUM_DISTINCT - NUMBER NULL
LOW_VALUE - RAW(32) NULL
HIGH_VALUE - RAW(32) NULL
DENSITY - NUMBER 0
NUM_NULLS - NUMBER 0
NUM_BUCKETS - NUMBER 0
LAST_ANALYZED - DATE NULL
SAMPLE_SIZE - NUMBER 0
CHARACTER_SET_NAME - VARCHAR2(44) NULL
CHAR_COL_DECL_LENGTH - NUMBER 0
GLOBAL_STATS - VARCHAR2(3) NULL
USER_STATS - VARCHAR2(3) NULL
AVG_COL_LEN - NUMBER 0

C.3.2.22 USER_TAB_COMMENTS

Name Null? Type Value
TABLE_NAME NOT NULL VARCHAR2(30) -
TABLE_TYPE - VARCHAR2(11) "TABLE" or "VIEW"
COMMENTS - VARCHAR2(4000) NULL

C.3.2.23 USER_TABLES

Name Null? Type Value
TABLE_NAME NOT NULL VARCHAR2(30) -
TABLESPACE_NAME - VARCHAR2(30) NULL
CLUSTER_NAME - VARCHAR2(30) NULL
IOT_NAME - VARCHAR2(30) NULL
PCT_FREE - NUMBER 0
PCT_USED - NUMBER 0
INI_TRANS - NUMBER 0
MAX_TRANS - NUMBER 0
INITIAL_EXTENT - NUMBER 0
NEXT_EXTENT - NUMBER 0
MIN_EXTENTS - NUMBER 0
MAX_EXTENTS - NUMBER 0
PCT_INCREASE - NUMBER 0
FREELISTS - NUMBER 0
FREELIST_GROUPS - NUMBER 0
LOGGING - VARCHAR2(3) NULL
BACKED_UP - VARCHAR2(1) NULL
NUM_ROWS - NUMBER -
BLOCKS - NUMBER -
EMPTY_BLOCKS - NUMBER 0
AVG_SPACE - NUMBER 0
CHAIN_CNT - NUMBER 0
AVG_ROW_LEN - NUMBER 0
AVG_SPACE_FREELIST_BLOCKS - NUMBER 0
NUM_FREELIST_BLOCKS - NUMBER 0
DEGREE - VARCHAR2(10) NULL
INSTANCES - VARCHAR2(10) NULL
CACHE - VARCHAR2(5) NULL
TABLE_LOCK - VARCHAR2(8) NULL
SAMPLE_SIZE - NUMBER 0
LAST_ANALYZED - DATE NULL
PARTITIONED - VARCHAR2(3) NULL
IOT_TYPE - VARCHAR2(12) NULL
TEMPORARY - VARHCAR2(1) NULL
SECONDARY - VARCHAR2(1) NULL
NESTED - VARCHAR2(3) NULL
BUFFER_POOL - VARCHAR2(7) NULL
ROW_MOVEMENT - VARCHAR2(8) NULL
GLOBAL_STATS - VARCHAR2(3) NULL
USER_STATS - VARCHAR2(3) NULL
DURATION - VARCHAR2(15) NULL
SKIP_CORRUPT - VARCHAR2(8) NULL
MONITORING - VARCHAR2(3) NULL

C.3.2.24 USER_USERS

Name Null? Type Value
USERNAME NOT NULL VARCHAR2(30) -
USER_ID NOT NULL NUMBER 0
ACCOUNT_STATUS NOT NULL VARCHAR2(32) OPEN
LOCK_DATE - DATE NULL
EXPIRY_DATE - DATE NULL
DEFAULT_TABLESPACE NOT NULL VARCHAR2(30) NULL
TEMPORARY_TABLESPACE NOT NULL VARCHAR2(30) NULL
CREATED NOT NULL DATE NULL
INITIAL_RSRC_CONSUMER_GROUP - VARCHAR2(30) NULL
EXTERNAL_NAME - VARCHAR2(4000) NULL

C.3.2.25 USER_VIEWS

Name Null? Type Value
VIEW_NAME NOT NULL VARCHAR2(30) -
TEXT_LENGTH - NUMBER 0
TEXT - LONG NULL
TYPE_TEXT_LENGTH - NUMBER 0
TYPE_TEXT - VARCHAR2(4000) NULL
OID_TEXT_LENGTH - NUMBER 0
OID_TEXT - VARCHAR2(4000) NULL
VIEW_TYPE_OWNER - VARCHAR2(30) NULL
VIEW_TYPE - VARCHAR2(30) NULL