ORA-30051: VERSIONS clause not allowed here
Restrictions on Flashback Queries These queries are subject to the following restrictions:
You cannot specify a subquery in the expression of the AS OF clause.
You cannot use the VERSIONS clause in flashback queries to temporary or external tables, or tables that are part of a cluster.
You cannot use the VERSIONS clause in flashback queries to views. However, you can use the VERSIONS syntax in the defining query of a view.
You cannot specify this clause if you have specified query_name in the query_table_expression.
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