标题: ORA-14554: cannot perform requested operation [打印本页] 作者: admin 时间: 2016-8-21 10:55 标题: ORA-14554: cannot perform requested operation ORA-14554: cannotperform requested operation during database startup Cause: Requested operation requires the Cost BasedOptimizer(CBO) which is not
available during database startup. Features like partitioning, IOTs, groupingsets,
and flashback cursor require the CBO. Action: Retrythe query after the database is open.