实例讲解如何查找某个对象的定义情况

SQL> conn lunar/lunar@test1已连接。SQL> select * from user_sys_PRivs;USERNAME       PRIVILEGE   ADMIN_OPTION---------- -------------- ------------SQL> select * from user_role_privs;USERNAME      GRANTED_ROLE   ADMIN_OPTION DEFAULT_ROLE OS_GRANTED----------- --------------- ------------ ------------ ----------LUNAR       CONNECT      NO           YES          NOLUNAR       RESOURCE     NO           YES          NOPUBLIC      PLUSTRACE    NO           YES          NOSQL> select count(*) from v$fixed_table;select count(*) from v$fixed_tableORA-00942: 表或视图不存在必须授权：SQL> conn /@test1 as sysdba已连接。SQL> grant select on v_$fixed_table to lunar;授权成功。SQL> conn lunar/lunar@test1已连接。SQL>

SQL> select count(*) from v$fixed_table;  COUNT(*)----------       912SQL> select count(*) from v_$fixed_table;select count(*) from v_$fixed_tableORA-00942: 表或视图不存在SQL> select count(*) from sys.v_$fixed_table;  COUNT(*)----------       912SQL>

SQL> grant select any table to lunar;授权成功。SQL> select * from user_role_privs;USERNAME         GRANTED_ROLE       ADMIN_OPTION DEFAULT_ROLE OS_GRANTED------------ --------------------- ------------ ------------ ----------LUNAR            CONNECT             NO           YES          NOLUNAR            RESOURCE            NO           YES          NOPUBLIC           PLUSTRACE           NO           YES          NOSQL> select * from user_sys_privs;USERNAME         PRIVILEGE           ADMIN_OPTION------------ ----------------------- ------------LUNAR            SELECT ANY TABLE       NOSQL> select count(*) from v$fixed_table;  COUNT(*)----------       912SQL> select * from v$fixed_table where rownum<2;NAME       OBJECT_ID TYPE   TABLE_NUM---------- ---------- ----- ----------X$KQFTA    4294950912 TABLE     0SQL> select * from v_$fixed_table where rownum<2;select * from v_$fixed_table where rownum<2ORA-00942: 表或视图不存在SQL> select * from sys.v_$fixed_table where rownum<2;NAME       OBJECT_ID  TYPE   TABLE_NUM---------- ---------- ----- ----------X$KQFTA    4294950912 TABLE      0SQL>

SQL> conn /@test1 as sysdba已连接。SQL> grant select any table to lunar;授权成功。SQL> conn lunar/lunar@test1已连接。SQL>SQL> set heading off echo off long 50000 pages 10000SQL> select * from v$fixed_view_definition where view_name='V$FIXED_TABLE';V$FIXED_TABLE                  select  NAME , OBJECT_ID , TYPE , TABLE_NUM from GV$FIXED_TABLE where inst_id = USERENV('Instance')SQL> select  NAME , OBJECT_ID , TYPE , TABLE_NUM from GV$FIXED_TABLE where inst_id = USERENV('Instance')

SQL> select * from v$fixed_view_definition where view_name='GV$FIXED_TABLE';GV$FIXED_TABLE                 select inst_id,kqftanam, kqftaobj, 'TABLE', indx from x$kqfta union all select inst_id,kqfvinam, kqfviobj, 'VIEW', 65537 from x$kqfvi union all select inst_id,kqfdtnam, kqfdtobj, 'TABLE', 65537 from x$kqfdtSQL> select inst_id,kqftanam, kqftaobj, 'TABLE', indx from x$kqfta union all select inst_id,kqfvinam, kqfviobj, 'VIEW', 65537 from x$kqfvi union all select inst_id,kqfdtnam, kqfdtobj, 'TABLE', 65537 from x$kqfdt

SQL> desc v$indexed_fixed_columnName            Type         Nullable Default Comments --------------- ------------ -------- ------- -------- TABLE_NAME      VARCHAR2(30) Y                         INDEX_NUMBER    NUMBER       Y                         COLUMN_NAME     VARCHAR2(30) Y                         COLUMN_POSITION NUMBER       Y                         SQL> 例如：SQL> select * from v$indexed_fixed_column where table_name='X$KQFTA';TABLE_NAME          INDEX_NUMBER COLUMN_NAME  COLUMN_POSITION------------------ ------------ -------------- ---------------X$KQFTA               1 ADDR                    0X$KQFTA               2 INDX                    0SQL>

SQL> select * from v$fixed_view_definition where view_name='GV$PX_PROCESS';GV$PX_PROCESS                  select a.inst_id, a.kxfpdpnam,  decode(bitand(a.kxfpdpflg, 16), 0, 'INUSE', 'AVAILABLE'),  b.pid, a.kxfpdpspid, c.sid, c.serial#  from x$kxfpdp a, V$PROCESS b, V$session c  where bitand(kxfpdpflg, 8) != 0 and  a.kxfpdpspid = b.SPID anda.kxfpdpspid = c.PROCESS(+)SQL>select a.inst_id, a.kxfpdpnam,   decode(bitand(a.kxfpdpflg, 16), 0, 'IN USE', 'AVAILABLE'),   b.pid, a.kxfpdpspid, c.sid, c.serial#  from x$kxfpdp a, V$PROCESS b, V$SESSION c  where bitand(kxfpdpflg, 8) != 0 and  a.kxfpdpspid = b.SPID and  a.kxfpdpspid = c.PROCESS(+) SQL> select * from v$fixed_view_definition where view_name='V$PX_PROCESS';V$PX_PROCESS                   select  SERVER_NAME, STATUS, PID, SPID, SID, SERIAL#  from GV$PX_PROCESS where inst_id = USERENV('Instance')SQL>select  SERVER_NAME, STATUS, PID, SPID, SID, SERIAL#  from GV$PX_PROCESS where inst_id = USERENV('Instance')

SQL> desc dba_viewsName             Type          Nullable  Default Comments                                                    ---------------- ------------ -------- ------- -------OWNER            VARCHAR2(30)           Owner of the view                                           VIEW_NAME        VARCHAR2(30)           Name of the view                                            TEXT_LENGTH      NUMBER         Y        Length of the view text                                     TEXT             LONG           Y        View text                                                   TYPE_TEXT_LENGTH NUMBER         Y        Length of the type clause of the object view                TYPE_TEXT        VARCHAR2(4000) Y        Type clause of the object view                              OID_TEXT_LENGTH  NUMBER         Y        Length of the WITH OBJECT OID clause of the object view     OID_TEXT         VARCHAR2(4000) Y        WITH OBJECT OID clause of the object view                   VIEW_TYPE_OWNER  VARCHAR2(30)   Y        Owner of the type of the view if the view is an object view VIEW_TYPE        VARCHAR2(30)   Y        Type of the view if the view is an object view              SUPERVIEW_NAME   VARCHAR2(30)   Y        Name of the superview, if view is a subview                 SQL> SQL> set heading off echo off long 1000000000 pages 10000SQL> select text from dba_views where view_name ='DBA_USERS';select u.name, u.user#, u.passWord,m.status,decode(u.astatus, 4, u.ltime,5, u.ltime,6, u.ltime,8, u.ltime,9, u.ltime,10, u.ltime, to_date(NULL)),decode(u.astatus,1, u.exptime,2, u.exptime,5, u.exptime,6, u.exptime,9, u.exptime,10, u.exptime,decode(u.ptime, '', to_date(NULL),decode(pr.limit#, 2147483647, to_date(NULL),decode(pr.limit#, 0,decode(dp.limit#, 2147483647, to_date(NULL), u.ptime +dp.limit#/86400),u.ptime + pr.limit#/86400)))),dts.name, tts.name, u.ctime, p.name, u.defschclass, u.ext_usernamefrom sys.user$ u, sys.ts$ dts, sys.ts$ tts, sys.profname$ p,sys.user_astatus_map m, sys.profile$ pr, sys.profile$ dpwhere u.datats# = dts.ts#and u.resource$ = p.profile#and u.tempts# = tts.ts#and u.astatus = m.status#and u.type# = 1and u.resource$ = pr.profile#and dp.profile# = 0and dp.type#=1and dp.resource#=1and pr.type# = 1and pr.resource# = 1SQL>

SQL> select substr(table_name,1,20) tabname,  2  substr(column_name,1,20)column_name,  3  rtrim(data_type)||'('||data_length||')' from dba_tab_columns  4  where owner='&username'  5  /TABNAME                              COLUMN_NAME    RTRIM(DATA_TYPE)||'('||DATA_LE--------------------------- ---------------------   -------BONUS                                    ENAME                                    VARCHAR2(10)BONUS                                    JOB                                      VARCHAR2(9)BONUS                                    SAL         NUMBER(22)BONUS                                    COMM        NUMBER(22)DEPT                                     DEPTNO      NUMBER(22)DEPT                                     DNAME                                    VARCHAR2(14)DEPT                                     LOC                                      VARCHAR2(13)DUMMY                                    DUMMY       NUMBER(22)EMP                                      EMPNO       NUMBER(22)EMP                                      ENAME                                    VARCHAR2(10)EMP                                      JOB                                      VARCHAR2(9)EMP                                      MGR         NUMBER(22)EMP                                      HIREDATE    DATE(7)EMP                                      SAL         NUMBER(22)EMP                                      COMM        NUMBER(22)EMP                                      DEPTNO      NUMBER(22)SALGRADE                                 GRADE       NUMBER(22)SALGRADE                                 LOSAL       NUMBER(22)SALGRADE                                 HISAL       NUMBER(22)19 rows selectedSQL>

SQL> @C:/TEMP/get_obj_sql.sqlSQL> set heading off echo off pages 10000 long 90000输入 object_type 的值:  TABLE输入 object_name 的值:  EMP输入 object_owner 的值:  LUNAR原值    1: select dbms_metadata.get_ddl(upper('&OBJECT_TYPE'),upper('&OBJECT_NAME'),upper('&OBJECT_OWNER')) from dual新值    1: select dbms_metadata.get_ddl(upper('TABLE'),upper('EMP'),upper('LUNAR')) from dual  CREATE TABLE "LUNAR"."EMP"   (    "EMPNO" NUMBER(4,0) NOT NULL ENABLE,        "ENAME" VARCHAR2(10),        "JOB" VARCHAR2(9),        "MGR" NUMBER(4,0),        "HIREDATE" DATE,        "SAL" NUMBER(7,2),        "COMM" NUMBER(7,2),        "DEPTNO" NUMBER(2,0)   ) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)  TABLESPACE "SYSTEM" SQL>