對于大多數(shù)情況,您可以在user_dependencies上使用connect by.

確定依賴關系

適用于任何Oracle用戶的示例,因為PUBLIC已被授予對user_dependencies的select訪問權限：

select name,type,prior name,prior type

from user_dependencies

start

with name='BUBS#MUNT_EENHEDEN'

and type='PACKAGE'

connect

by nocycle

name = prior referenced_name

and type = prior referenced_type

樣本輸出

Level 1: BUBS#MUNT_EENHEDEN PACKAGE

Level 2: BUBS_MUNT_EENHEDEN_V VIEW BUBS#MUNT_EENHEDEN PACKAGE

Level 3: BUBS#VERTALINGEN PACKAGE BUBS_MUNT_EENHEDEN_V VIEW

Level 4: ITGEN_LANGUAGES_V VIEW BUBS#VERTALINGEN PACKAGE

復雜的場景

對于復雜的場景,我發(fā)現(xiàn)有必要直接在數(shù)據字典上使用自己的視圖.只有當您知道自己在做什么以及想要支持哪種RDBMS版本時,才能執(zhí)行此操作！例如,datamodel版本引入了數(shù)據字典中的主要更改.

樣品：

create or replace force view itgen_object_tree_changes_r

as

select o_master.obj# ojt#,o_master.name ojt_name,o.mtime ojt_ref_mtime,o.name ojt_ref_name,o.owner# ojt_ref_owner#,decode

( o.type#,'NEXT OBJECT',1,'INDEX',2,'TABLE',3,'CLUSTER',4,'VIEW',5,'SYNONYM',6,'SEQUENCE',7,'PROCEDURE',8,'FUNCTION',9,'PACKAGE',11,'PACKAGE BODY',12,'TRIGGER',13,'TYPE',14,'TYPE BODY',19,'TABLE PARTITION',20,'INDEX PARTITION',21,'LOB',22,'LIBRARY',23,'DIRECTORY',24,'QUEUE',28,'JAVA SOURCE',29,'JAVA CLASS',30,'JAVA RESOURCE',32,'INDEXTYPE',33,'OPERATOR',34,'TABLE SUBPARTITION',35,'INDEX SUBPARTITION',40,'LOB PARTITION',41,'LOB SUBPARTITION',42,nvl

( ( select 'REWRITE EQUIVALENCE'

from sys.sum$s

where s.obj# = o.obj#

and bitand ( s.xpflags,8388608 ) = 8388608 ),'MATERIALIZED VIEW'

),43,'DIMENSION',44,'CONTEXT',46,'RULE SET',47,'RESOURCE PLAN',48,'CONSUMER GROUP',51,'SUBSCRIPTION',52,'LOCATION',55,'XML SCHEMA',56,'JAVA DATA',57,'EDITION',59,'RULE',60,'CAPTURE',61,'APPLY',62,'EVALUATION CONTEXT',66,'JOB',67,'PROGRAM',68,'JOB CLASS',69,'WINDOW',72,'WINDOW GROUP',74,'SCHEDULE',79,'CHAIN',81,'FILE GROUP',82,'MINING MODEL',87,'ASSEMBLY',90,'CREDENTIAL',92,'CUBE DIMENSION',93,'CUBE',94,'MEASURE FOLDER',95,'CUBE BUILD PROCESS','UNDEFINED'

)

ojt_ref_type

from sys.obj$o,( /* All dependencies from the object if there are any. */

select distinct connect_by_root d_obj# obj#,dep.p_obj# obj_ref#

from sys.dependency$dep

connect

by nocycle dep.d_obj# = prior dep.p_obj#

start

with dep.d_obj# in ( select obj.obj# from itgen_schemas_r sma,sys.obj$obj where obj.owner# = sma.owner# )

union all /* Union all allowed,'in' ignores duplicates. */

/* The object itself. */

select obj.obj#,obj.obj#

from itgen_schemas_r sma,sys.obj$obj

where obj.owner# = sma.owner#

) deps,sys.obj$o_master

where o_master.obj# = deps.obj#

and o.obj# = deps.obj_ref#

--

-- View: itgen_object_tree_changes_r

--

-- Overview of dependencies between a master object and all objects used by it. It can be used to analyze the reason why a project version views must be recalculated.

--

-- Code (alias): ote_r

--

-- Category: Hardcoded.

--

-- Example:

--

-- The object 'X' is invalid,since 'Y' is invalid.

--

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