摘要：
从11.2.0.2开始，如果由于某种原因switchover没有成功，可以回滚switchover。For physical standby databases in situations where an error occurred and it is notpossible to continue with the switchover, it might still be possible to revert the newphysical standby database back to the primary role by using the following steps. ( 阅读全文
摘要：
PURPOSE-------To explain how to disable Parallel Execution on Session/System levelSCOPE & APPLICATION-------------------DBA's and Support AnalystsDisable Parallel Execution on Session Level--------------------------------------------To disable PX on session level you can use thefollowing thr 阅读全文