技术创新
进行锅炉排污操作时，先开的阀门先关，后开的后关。
Which three types of integration does the Business Event System support?（） (Choose three.) point-to-point。 parent/child messaging。 messaging hub system。 distributed applications messaging。 simple object access protocol (SOAP) messaging。
Which statement is true regarding virtual private catalogs? （） A virtual private catalog owner can create a local stored script, and have read/write access to a global stored script. 。 The virtual private catalog owner cannot create and modify the stored scripts. 。 The set of views and synonyms that make up the virtual private catalog is stored in the schema of the RMAN recovery catalog owner. 。 To perform most of the RMAN operations, the virtual catalog owner must have the SYSDBA or SYSOPER privilege on the target database.&e。
电池在充电过程中将（）转化为化学能储存起来 电能。 太阳能。 核能。 机械能。
Which two statements are true regarding the database in ARCHIVELOG mode？（）
