Create View Statement Hangs

Question

Hello -
I'm running 10g R2 on AIX. I have view A, view B, and view C. View C look like this:
select * from view A;
union all
select * from view B;
View A and View B both contains many left outer joins.
View C will compile when it only references view A or view B (without the union).
What would cause the create view statement to hang when using the union statement? Also, if I leave out the create view for C, then the following select statements will never complete:
select * from view A;
union all
select * from view B;
I have determined that something with the union statement is causing this to hang.
Has anyone ever seen anything like this? Any help is greatly appreciated!
Thanks,
Mike

Answer 1

Thanks all for the postings. Sorry it took me so long to get back to this. I am posting the actual ddl for the views. The TESTA and TESTB views are created without any problems. The TESTC view (with the union all) just hangs when trying to create. It's not the view, but the select with the union all. If I run the sql without the create view statement, it still hangs. If I remove the union, and just select from TESTA or only TESTB, then it works fine. I have never seen anything like this. Any help is greatly appreciated! Thx!
*****************create TESTA****************************************************
CREATE OR REPLACE VIEW TESTA AS
SELECT
addr.addressline1 AS address1,
addr.addressline2 AS address2,
addr.addressline3 AS city,
addr.addressline4 AS state,
addr.addressline5 AS zipcode
FROM fapplication app
INNER JOIN findividual ind
ON ind.fapplicationid = app.fapplicationid
LEFT OUTER JOIN fcreditrequest cr
ON app.fapplicationid = cr.fapplicationid
LEFT OUTER JOIN faddress addr
ON ind.findividualid = addr.findividualid
LEFT OUTER JOIN fvrmaxdealstructure ds
ON cr.fcreditrequestid = ds.fcreditrequestid
LEFT OUTER JOIN fvsystemcollectionentry sce1
ON ds.productratetypeid = sce1.fsystemcollectionentryid
LEFT OUTER JOIN fvsystemcollectionentry sce2
ON cr.loanpurposeid = sce2.fsystemcollectionentryid
AND sce2.flanguageid = COALESCE (sce1.flanguageid, sce2.flanguageid)
LEFT OUTER JOIN fvsystemcollectionentry sce3
ON ds.productpymtfreqid = sce3.fsystemcollectionentryid
AND sce3.flanguageid = COALESCE (sce1.flanguageid, sce2.flanguageid, sce3.flanguageid)
LEFT OUTER JOIN fvsystemcollectionentry sce4
ON ds.productsecuritytypeid = sce4.fsystemcollectionentryid
AND sce4.flanguageid = COALESCE (sce1.flanguageid, sce2.flanguageid, sce3.flanguageid, sce4.flanguageid)
LEFT OUTER JOIN fvproductcategory prodcat
ON ds.fproductcategoryid = prodcat.fproductcategoryid
AND prodcat.flanguageid = COALESCE (sce1.flanguageid, sce2.flanguageid, sce3.flanguageid, prodcat.flanguageid)
LEFT OUTER JOIN fvproduct prod
ON ds.fproductid = prod.fproductid
AND prod.flanguageid = COALESCE (sce1.flanguageid, sce2.flanguageid, sce3.flanguageid, prodcat.flanguageid, prod.flanguageid)
LEFT OUTER JOIN fvrcommonfields udapp1
ON app.fapplicationid = udapp1.applicationid
LEFT OUTER JOIN fvrloanauthfields1 udapp2
ON app.fapplicationid = udapp2.applicationid
LEFT OUTER JOIN fvrloanauthfields2 udapp3
ON app.fapplicationid = udapp3.applicationid
LEFT OUTER JOIN fvrloanauthfields3 udapp4
ON app.fapplicationid = udapp4.applicationid
LEFT OUTER JOIN fvrloanauthfields4 udapp5
ON app.fapplicationid = udapp5.applicationid
LEFT OUTER JOIN fvrmemofields udapp6
ON app.fapplicationid = udapp6.applicationid
WHERE COALESCE(sce1.languagecd, sce2.languagecd, sce3.languagecd, sce4.languagecd, prodcat.languagecd, prod.languagecd, 'EN') = 'EN'
*****************create TESTB****************************************************
CREATE OR REPLACE VIEW TESTB AS
SELECT
addr.addressline1 AS address1,
addr.addressline2 AS address2,
addr.addressline3 AS city,
addr.addressline4 AS state,
addr.addressline5 AS zipcode
FROM fapplication app
INNER JOIN findividual ind
ON ind.fapplicationid = app.fapplicationid
LEFT OUTER JOIN fcreditrequest cr
ON app.fapplicationid = cr.fapplicationid
LEFT OUTER JOIN faddress addr
ON ind.findividualid = addr.findividualid
LEFT OUTER JOIN fvrmaxdealstructure ds
ON cr.fcreditrequestid = ds.fcreditrequestid
LEFT OUTER JOIN fvsystemcollectionentry sce1
ON ds.productratetypeid = sce1.fsystemcollectionentryid
LEFT OUTER JOIN fvsystemcollectionentry sce2
ON cr.loanpurposeid = sce2.fsystemcollectionentryid
AND sce2.flanguageid = COALESCE (sce1.flanguageid, sce2.flanguageid)
LEFT OUTER JOIN fvsystemcollectionentry sce3
ON ds.productpymtfreqid = sce3.fsystemcollectionentryid
AND sce3.flanguageid = COALESCE (sce1.flanguageid, sce2.flanguageid, sce3.flanguageid)
LEFT OUTER JOIN fvsystemcollectionentry sce4
ON ds.productsecuritytypeid = sce4.fsystemcollectionentryid
AND sce4.flanguageid = COALESCE (sce1.flanguageid, sce2.flanguageid, sce3.flanguageid, sce4.flanguageid)
LEFT OUTER JOIN fvproductcategory prodcat
ON ds.fproductcategoryid = prodcat.fproductcategoryid
AND prodcat.flanguageid = COALESCE (sce1.flanguageid, sce2.flanguageid, sce3.flanguageid, prodcat.flanguageid)
LEFT OUTER JOIN fvproduct prod
ON ds.fproductid = prod.fproductid
AND prod.flanguageid = COALESCE (sce1.flanguageid, sce2.flanguageid, sce3.flanguageid, prodcat.flanguageid, prod.flanguageid)
LEFT OUTER JOIN fvrcommonfields udapp1
ON app.fapplicationid = udapp1.applicationid
LEFT OUTER JOIN fvrloanauthfields1 udapp2
ON app.fapplicationid = udapp2.applicationid
LEFT OUTER JOIN fvrloanauthfields2 udapp3
ON app.fapplicationid = udapp3.applicationid
LEFT OUTER JOIN fvrloanauthfields3 udapp4
ON app.fapplicationid = udapp4.applicationid
LEFT OUTER JOIN fvrloanauthfields4 udapp5
ON app.fapplicationid = udapp5.applicationid
LEFT OUTER JOIN fvrmemofields udapp6
ON app.fapplicationid = udapp6.applicationid
WHERE COALESCE(sce1.languagecd, sce2.languagecd, sce3.languagecd, sce4.languagecd, prodcat.languagecd, prod.languagecd, 'EN') = 'EN'
*****************create TESTC****************************************************
CREATE OR REPLACE VIEW TESTC AS
SELECT
     TESTA.ADDRESS1,
TESTA.ADDRESS2,
TESTA.CITY,
TESTA.STATE,
TESTA.ZIPCODE
FROM TESTA
UNION ALL
SELECT
TESTB.ADDRESS1,
TESTB.ADDRESS2,
TESTB.CITY,
TESTB.STATE,
TESTB.ZIPCODE
FROM TESTB;