Oracle : Ошибка ORA-12008

"error in materialized view refresh path"
*Cause: Table SNAP$_ reads rows from the view
MVIEW$_, which is a view on the master table
(the master may be at a remote site). Any
error in this path will cause this error at refresh time.
For fast refreshes, the table .MLOG$_
is also referenced.
*Action: Examine the other messages on the stack to find the problem.
See if the objects SNAP$_, MVIEW$_,
.@, .MLOG$_@
still exist.

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