单项选择题 In what order would you execute the following steps to create a recovery catalog？（） a.Issue the create catalog command.  b.Create the recovery-catalog database.  c.Create the recovery-catalog user.  d.Grant the recovery_catalog_owner privilege to the recovery-catalog user.  e.Issue the register database command from the target database.

单项选择题 When starting up your ASM instance, you receive the following error: What is the cause of the error?（）

单项选择题 What is the default AU size of an ASM disk group? What is the maximum AU size in an ASM disk group?（）