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Categories / Oracle PLSQL Tutorial / System Tables Data Dictionary
 

Query the all_tables

SQL> SQL> desc all_tables;  Name                                     Null?    Type  -----------------------------------------  OWNER                                    NOT NULL VARCHAR2(30)  TABLE_NAME                               NOT NULL VARCHAR2(30)  TABLESPACE_NAME                                   VARCHAR2(30)  CLUSTER_NAME                                      VARCHAR2(30)  IOT_NAME                                          VARCHAR2(30)  STATUS                                            VARCHAR2(8)  PCT_FREE                                          NUMBER  PCT_USED                                          NUMBER  INI_TRANS                                         NUMBER  MAX_TRANS                                         NUMBER  INITIAL_EXTENT                                    NUMBER  NEXT_EXTENT                                       NUMBER  MIN_EXTENTS                                       NUMBER  MAX_EXTENTS                                       NUMBER  PCT_INCREASE                                      NUMBER  FREELISTS                                         NUMBER  FREELIST_GROUPS                                   NUMBER  LOGGING                                           VARCHAR2(3)  BACKED_UP                                         VARCHAR2(1)  NUM_ROWS                                          NUMBER  BLOCKS                                            NUMBER  EMPTY_BLOCKS                                      NUMBER  AVG_SPACE                                         NUMBER  CHAIN_CNT                                         NUMBER  AVG_ROW_LEN                                       NUMBER  AVG_SPACE_FREELIST_BLOCKS                         NUMBER  NUM_FREELIST_BLOCKS                               NUMBER  DEGREE                                            VARCHAR2(10)  INSTANCES                                         VARCHAR2(10)  CACHE                                             VARCHAR2(5)  TABLE_LOCK                                        VARCHAR2(8)  SAMPLE_SIZE                                       NUMBER  LAST_ANALYZED                                     DATE  PARTITIONED                                       VARCHAR2(3)  IOT_TYPE                                          VARCHAR2(12)  TEMPORARY                                         VARCHAR2(1)  SECONDARY                                         VARCHAR2(1)  NESTED                                            VARCHAR2(3)  BUFFER_POOL                                       VARCHAR2(7)  ROW_MOVEMENT                                      VARCHAR2(8)  GLOBAL_STATS                                      VARCHAR2(3)  USER_STATS                                        VARCHAR2(3)  DURATION                                          VARCHAR2(15)  SKIP_CORRUPT                                      VARCHAR2(8)  MONITORING                                        VARCHAR2(3)  CLUSTER_OWNER                                     VARCHAR2(30)  DEPENDENCIES                                      VARCHAR2(8)  COMPRESSION                                       VARCHAR2(8)  DROPPED                                           VARCHAR2(3) SQL> SQL> select owner, table_name   2  from all_tables   3  where rownum < 30   4  order by owner, table_name ; OWNER                          TABLE_NAME ------------------------------ ------------------------------ SYS                            ATTRCOL$ SYS                            BOOTSTRAP$ SYS                            CCOL$ SYS                            CDEF$ SYS                            CLU$ SYS                            COL$ SYS                            COLTYPE$ SYS                            CON$ SYS                            FET$ SYS                            FILE$ SYS                            ICOLDEP$ SYS                            LIBRARY$ SYS                            LOB$ SYS                            NTAB$ SYS                            OBJ$ SYS                            OPQTYPE$ SYS                            PROXY_DATA$ SYS                            PROXY_ROLE_DATA$ SYS                            REFCON$ SYS                            SEG$ SYS                            SUBCOLTYPE$ SYS                            TAB$ SYS                            TS$ SYS                            TSQ$ SYS                            TYPE_MISC$ SYS                            UET$ SYS                            UNDO$ SYS                            USER$ SYS                            VIEWTRCOL$ 29 rows selected.