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实例因为断电异常中止。哪些是关于redo日志在实例恢复期间的正确描述？A．Inactive和current状态的redo日志需要完成恢复B．Online和Archived日志需要实例恢复C．最后一个checkpoint之后的所有redo信息都要应用到数据文件D．所有记录在current状态日志中直到

1.While deploying a new application module,the software vendor ships the application software along with appropriate SQL plan baselines for the new SQ

1. USER1.EMP has a referential integrity constraint defined on EMP.DNO that references USER1.DEPT.DNO. USER1 executes these commands: SQL> UPDATE dept

1.While deploying a new application module, the software vendor ships the application software along with appropriate SQL plan baselines for the new S