When you install the Simpana backup client on a virtual machine and perform a backup, the backup job status becomes pending and reports an error message " Cannot decode packet header: invalid start signature " , which of the following may be the cause of this problem?

In a Huawei disaster recovery plan, in order to implement the one-click disaster recovery operation for Oracle applications, you must configure the recovery in Replciation Director Plan. What configuration actions do you need to do on the Replication Director side before configuring the recovery plan? (Multiple choice.)

Existing set customer of database uses a raw device, due to the large amount of data in the database. The customer plans to replace the old storage with new storage devices.

In the process of environmental inspection lvcb engineers found the following:

#getlvcb -TA sjklv

Intrapolicy =

copies = 0

interpolicy =

lvid =

lvname =

label =

machine id =

number Ips = 0

relocatable =

strict =

stripe width = 0

stripe size in exponent = 0

type =

upperbound = 0

fs =

time created = time modified =

As the vg is too large, the expansion of vg is impossible. As the service window is very short, and customers do not want to avoid the risk of large adjustments of the whole original environment, what is the recommended approach?

A customer project deploys an 8-node OceanStor 9000 C Node with full front-end and back-end IB networking. The device is powered on and completes all front-end network ports. During customer front-end business switch interoperability testing, engineers will perform Oceanstor 9000 software installation and deployment. What is considered a best practice for this?

What kind of technology in an active-active disaster recovery solution can realize the traffic distribution between servers in different regions on the wide area network (including the Internet), keeping access quality with the best server from your nearest customer?

When a Simpana backup client failed to perform the backup task, the status reported the following error " failed to connect to indexing process from client [client] to [MediaAgent * MediaAgent * 8400 * 8402] .Error [Inability to connect to remote machine[MediaAgent] .Please check Network Connectivity or the machine may be down] . " You check the client and the media service devices are normal. The possible reasons for this problem are:

In a customer environment with SuSE 10SP3, HBA QLogic QLE2562, using the operating system comes with HBA card driver. The storage array is Huawei OceanStor V3 storage. When storing the FC host port on the system and the HBA on the host. When the card port mode is inconsistent, it is usually recommended to modify the FC host port mode on the storage side to solve the problem.

Which of the following are correct regarding a Storage Array RAID 2.0 Typical Application Performance Tuning? (multiple choice)

RAC is a typical " multi-instance, single-database " architecture that is shared by all nodes, accessed in parallel, including database data files, control files, parameter files, online reorganization log files, and even archived log files are placed on shared storage and guaranteed to be simultaneously accessible by all nodes

In a clustered environment, data is placed on the shared storage, and identities between peers are equal and have the same access to the data. It is required that the clusterware have a control mechanism for concurrent access to such peer permissions. In Oracle RAC, you use the _____ mechanism to do multiple node-to-node collisions control of access.