ORA-30417：The EXTERNAL MODIFY clause cannot be used to modify the location for an ORACLE_BIGDATA external table.
错误码
错误描述：The EXTERNAL MODIFY clause cannot be used to modify the location for an ORACLE_BIGDATA external table.
错误原因：The EXTERNAL MODIFY clause was used to change the location for an ORACLE_BIGDATA external table.
解决方法：Create a new external table for the new location.
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