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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q22-Q27):

NEW QUESTION # 22
Which two statements are true for the Oracle Exadata Configuration Assistant (OECA)?

• A. OECA's "Add Equipment" input option allows allocation of RU slots for customer equipment.
• B. OECA facilitates PDU power selection initially and after equipment addition.
• C. OECA extends the hardware for the elastic configuration only.
• D. OECA allows one XT storage server in the configuration.
• E. OECA reconfigures the size of disk groups and recreates grid disks.

Answer: A,D
NEW QUESTION # 23
Which three steps are required to expand an Exadata X9M-2 Database Server with the lowest memory configuration available to the highest memory configuration?

• A. Add 16x 64GB DIMMs.
• B. Add 24x 32GB DIMMs.
• C. Add 32x 64GB DIMMs.
• D. Remove existing memory modules.
• E. Memory cannot be expanded on Exadata X9M-2 Database Servers.
• F. Shutdown the Database Server if running.
• G. Add 12x 64GB DIMMs.
• H. Add 12x 32GB DIMMs.
• I. Add 16x 32GB DIMMs.

Answer: A,D,F Explanation:
1. Remove existing memory modules: Before adding new memory modules, the existing memory modules should be removed.
2. Add 16x 64GB DIMMs: The new DIMMs should be added, in this case is 16 DIMMs of 64GB each, which will expand the memory to the highest configuration available.
3. Shutdown the Database Server if running: The Database Server should be shutdown before adding new memory modules in order to prevent any possible data loss or corruption.
The steps required to expand an Exadata X9M-2 Database Server with the lowest memory configuration available to the highest memory configuration are as follows:
Shutdown the Database Server if running.
Remove existing memory modules.
Add 16x 64GB DIMMs.
For reference, the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book states that "the lowest memory configuration for the Exadata X9M-2 Database Servers is 384GB and the highest is 768GB [1]. The memory upgrade is done in increments of 64GB using 16x 64GB DIMMs".
NEW QUESTION # 24
What are two recommended configuration best practices for backup and recovery on Exadata?

• A. Even if the backup was limited to writing to four tape drives, eight channels could be specified to expedite the restore process.
• B. When off-site long-term backup retention is needed, use Oracle Database Backup Cloud Service as a low-cost, offsite scalable storage for a disaster recovery solution.
• C. The internal Recovery Appliance backup and restore processing is optimized when the RMAN FILESPERSET parameter is set to 1 for the level 1 incremental backup set.
• D. Placing the backup network on dedicated switches installed in the top of the rack (ToR) has the benefits of isolating the backup network from other workloads and providing a greater level of control.

Answer: B,D
NEW QUESTION # 25
Which two statements are true about applying updates on Exadata systems?

• A. Updating kernel and RDMA packages on storage cells should be prevented by excluding them with the yum -exclude option.
• B. To speed up applying storage server updates in a rolling manner, updating two storage servers simultaneously is recommended.
• C. Failed database server updates are rolled back to a working state on a previous release automatically.
• D. When running a "yum update" for a new Exadata release, all other repositories should be disabled.
• E. For regular Exadata updates, yum automatically installs a non-UEK kernel, which can be selected to boot from grub.
• F. Failed storage server updates are automatically rolled back to a previous release.

Answer: C,E
NEW QUESTION # 26
Which dbmcli command is NOT valid on Exadata X9M?

• A. dbmcli -e "LIST METRICCURRENT WHERE name = 'DS_TEMP' "
• B. dbmcli -e "LIST ALERTHISTORY WHERE agelnMinutes < 15"
• C. dbmcli -e "LIST METRICHISTORY WHERE name LIKE 'DS_.*'"
• D. dbmcli -e "LIST IBPORT DETAIL"

Answer: D Explanation:
The dbmcli -e "LIST IBPORT DETAIL" command is not valid on Exadata X9M. According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1][2], this command is only valid on Exadata X3 and X4 models. The other three commands are valid on Exadata X9M.
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