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strange quuery behavior

edited Jul 30, 2015 9:05AM in SQL Performance (MOSC) 4 commentsAnswered
Hi -

May be somebody would be able to help to understand why this happend.  Our DW is 11gR2 4 instances RAC database. 

I have 2 views:

1.  view_1 is select * from view_2.

2.  view_2 is select * from view_3. 

(Please, do not comment on this structure.  I have it inherited and I can not change this.  So, I take it as it is).

When I run query from view_2 with I've gotten a data.

When I run the same query from view_1 (which is actually the same as view_2) I do not get a data.

This is not always the case.  Sometime I can get data from view_1 running the same query.

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