Qid Examcode Question Qimpath opt1 opt2 opt3 opt4 opt5 opt6 opt7 opt8 opt9 opt10 opt11 opt12 opt13 opt14 opt15 impath1 impath2 impath3 impath4 impath5 impath6 impath7 impath8 impath9 impath10 impath11 impath12 impath13 impath14 impath15 answers uanswer CR Edit Delete
66 1Z0-485 When using IORM, which statement accurately describes when redo log file writes take place? Based on the priority of the user Immediately Based on the resource group of the user Based on the intradatabase resource plan 2 SC edit delete
65 1Z0-485 What would be the best way to ensure that batch Jobs do not impact performance of online queries that use the same database? Configure IORM to disable Flash Cache usage for batch workload. Build a Database Resource Management Plan, giving priority to query workload. Deploy Instance Caging to control batch jobs. Configure and enable Parallel Query. Configure resource plans by using the I/O Resource Manager on the storage cells, giving priority to query workload. 2 SC edit delete
64 1Z0-485 Which CellCLI command is used to conclude that a storage server can be taken offline without impacting database availability? LIST GRIDDISK ATTRIBUTES name, asmDeactivationOutcome; LIST CELLDISK ATTRIBUTES name, raidLevel; LIST CELL ATTRIBUTES cellsrvStatus, flashCacheMode; LIST CELLDISK ATTRIBUTES name, raidLevel, asmModeStatus; LIST GRIDDISK ATTRIBUTES name, status; 1 SC edit delete
63 1Z0-485 Which three statements accurately describe update of software on Exadata Database Machine? The Oracle Database patchset software (for example, 11.2.0.3) requires the Exadata-specific version. Rolling patching is faster than non-rolling patching, but database down time is longer. The Oracle Database software on Exadata is updated using standard OPatch and the Oracle Universal Installer. Running Exadata with different storage server software versions is supported, but should be minimized to rolling patching scenarios. The database server operating system software (other than kernel and OFED) may be installed or updated from non-Exadata sources Storage server updates require access to an Unbreakable Linux Network (ULN) based repository. 3, 4, 6 MC edit delete
62 1Z0-485 Identify two tasks that the Database Resource Manager can perform, which the I/O Resource Manager cannot. Manage I/O based on the application that is connected to the database. Manage the number of parallel sessions for a query. Manage I/O and CPU between databases on the same cluster or physical database host. Terminate database sessions when certain limits have been reached. Manage the throughput of an I/O-bound application based on the service name used for the connection. 2, 4 MC edit delete
61 1Z0-485 When running OS Watcher, which two data outputs are valid for Exadata storage cell performance analysis? Select the two correct choices that apply? lostat mpstat netstat pkginfo label 1, 3 MC edit delete
60 1Z0-485 Identify the relevant steps in the correct order for activating an Auto Service Request (ASR) configuration. 60-qexes.png 2, 5, 1, 3, and 4 2, 4, I, 3, and 5 5, 2, 4, 1, and 3 5, 4, 2, 1, and 3 1 SC edit delete
59 1Z0-485 Which two statements are true about CellCLI? Using a CellCLI command, you can change the SNMP subscribers or add multiple SNMP subscribers. Using CellCLI, you can stop and start the ASM instances that are using the grid disks on the Exadata storage cell. With a simple CellCLI command, you can synchronize changes to all the storage cells in the Exadata realm. Using a CellCLI command, you can see whether grid disks are being used by ASM or not. You cannot use CellCLI to gather the serial numbers of physical disks. 1, 4 MC edit delete
58 1Z0-485 Why is ASM High redundancy an important configuration choice when rolling Exadata Storage Server patching is planned? High redundancy protects from partner disk failure while a cell is offline being updated. High redundancy forces ASM rebalance before allowing disks to be taken offline. High redundancy speeds up ASM fast mirror resync when a cell is brought back online after patching. Normal redundancy provides the same protection during rolling patching, so High redundancy is not important in this case 1 SC edit delete
57 1Z0-485 You are calculating the storage capacity that your customer will require on their ZFS Backup Appliance. Identify the set of factors that will affect this calculation. database size, full/incremental cycle, RPO (Recovery Point Objective), and RTO (Recovery Time Objective) database size, retention period, RPO (Recovery Point Objective), and compression database size, full/incremental cycle, compression, and retention period database size, compression, and backup window full/incremental cycle, retention period, and ZFS Backup Appliance model 3 SC edit delete
56 1Z0-485 Which three migration options are available when you migrate a database from the Big Endian format system to Exadata? Data Pump Export and Import transportable database transportable tablespaces Data Guard Insert as Select 1, 3, 5 MC edit delete
55 1Z0-485 Identify a recommended configuration to set up Auto Service Request (ASR) for Exadata. Install ASR Manager on Exadata Database Server. Install ASR Manager on Exadata Storage Server. ASR is not recommended for Exadata; the Oracle Configuration Manager is preferred. Install ASR Manager on a Standalone Server. 4 SC edit delete
54 1Z0-485 What are two impacts of selecting high redundancy over normal redundancy for your diskgroups? High redundancy provides more usable storage. Normal redundancy provides more usable storage. High redundancy gives you better I/O performance. High redundancy provides High Availability (HA) during disk failure and rolling Storage Server patching Normal redundancy provides HA during rolling Storage Server patching. 2, 4 MC edit delete
53 1Z0-485 Which two statements are true about Exadata memory capabilities? X3-8 can be purchased in a Half Rack configuration with 2 TB of memory. X3-2 memory can be expanded to 512 GB per node from 256 GB. X3-2 memory can be upgraded to use Flash in the compute nodes. X3-8 memory is fixed at 4 TB per a Rack. X3-2 can be purchased in a Half Rack configuration with 256 GB per node. 4, 5 MC edit delete
52 1Z0-485 Which three statements are true about Automatic Degree of Parallelism (Auto DOP) on Exadata? Auto DOP is an exclusive feature in Exadata, which allows the database optimizer to evaluate each statement and run it in parallel without special hints. Auto DOP is disabled by default and must be enabled before SQL statements can take advantage of its features. Auto DOP is enabled by default on Oracle 11gR2, allowing full use of its features. Oracle's Auto DOP algorithms calculate the Degree of Parallelism based on the table's block counts. SQL statements that take advantage of Auto DOP am be identified by using data from Oracle Automatic Workload Repository (AWR) or Enterprise Manager's Monitored SQL Executions page. 2, 4, 5 MC edit delete
51 1Z0-485 Which two actions are permitted with Exadata Database Machine? replacing the Ethernet switch with an equivalent 1U 48-port Gigabit Ethernet switch installing a second Ethernet switch in the Exadata rack for client access network connectivity replacing the Sun Data Center InfiniBand Switch 36-spine switch with an InfiniBand Gateway Switch configuring a Linux active-active channel bonding on the database servers by using two 10-Gigabit Ethernet port configuring a Fibre Channel over Ethernet (FCoE) protocol on database servers 1, 2 MC edit delete
50 1Z0-485 Which two statements appropriately describe the backup and recovery procedures on Exadata? Cell software backup is automatic and cell recovery is accomplished by using a rescue procedure. Data stored in a database is backed up and restored by using CellCLI commands. Database server software backup is automatic and recovery is accomplished by using a rescue procedure. Data stored in a database is backed up and restored by using RMAN commands. Cell software backup is performed through CellCLI and cell recovery is accomplished by using a rescue procedure. 1, 4 MC edit delete
49 1Z0-485 Identify two ways to reduce the risks associated with the software updates that are performed on a production Exadata system. Patch all systems at once instead of one at a time. Test on an Exadata system that is identical to the production system first. Updating an engineered system has no risk. Patch on the standby system first by using Data Guard Standby First Patch Apply. Create a system-wide firmware and software snapshot first. 2, 4 MC edit delete
48 1Z0-485 What are three ways to be informed of an Exadata Storage Server disk failure? review of the output of list alerthistory review of the output of select status from vSdatafile review of the ILOM log alert notifications through email when SMTP notification is configured alert notifications in the Enterprise Manager Exadata Plug-In review of database server iostat output 1, 4, 5 MC edit delete
47 1Z0-485 A control file tracks the physical components of a database. It is the root file that the database uses to find all the other files used by the database. Because of the importance of the control file, Oracle recommends that the control file be __________? size constrained, to prevent size overruns multiplexed, or have multiple identical copies stored on an HA USB Drive, to ensure that it does not get overwritten managed by EM12c, to ensure proper maintenance 2 SC edit delete
46 1Z0-485 Identify two reasons why using external tables for high performance data loads on Exadata is more advantageous than SQL*Loader. Transformations can be applied directly on the file data using SQL or PL/SQL constructions. External tables allow transparent parallelization inside the database. Parallelizing loads with external tables enables more efficient space management. External tables can take advantage of storage indexes to speed up data loads. 1, 3 MC edit delete
45 1Z0-485 Which statement is true about Enterprise Manager 12c for Exadata? EM Agents are installed on each database and storage node. EM Agents should not be installed on Exadata. Remote monitoring is the best practice. EM Agents can communicate to storage cells via SSH. The Exadata Plug-In for monitoring switches is installed in each EM Agent. Storage cells communicate directly to the EM Management Server via SNMP and/or SMTP. 4 SC edit delete
44 1Z0-485 What are the three customer options for hosting the Platinum Services Advanced Support Gateway? Install on Exadata Engineered System. Provide individual x86 64-Bit gateway hardware. Install in Oracle Virtual Machine with required hardware. Install on Oracle Database Appliance. Purchase the recommended x86 64-Bit gateway hardware from Oracle. 2, 3, 5 MC edit delete
43 1Z0-485 Your customer would like to use DBFS in their Exadata environment. They are asking you for the key characteristic of DBFS on Exadata. DBFS in an Exadata environment is faster than an NFS mount system because of the Smart Scan performance gains. Tens of thousands of files are the perfect use case for DBFS on Exadata. DBFS offers tremendous I/O bandwidth. 1 SC edit delete
42 1Z0-485 Which statement is true about instance caging setup? Instance caging is the right approach to make sure that database instances are not stealing memory from each other. The CPU Resource Manager and IORM need to be enabled to make instance caging to work as expected. Database instances need to be restarted to make changes to cpu_count effective. For a system with 16 threads, the sum of cpu_count for all databases should not be higher than 32 to prevent oversubscribing The init.org parameter resource_manager_plan should be set. 4 SC edit delete
41 1Z0-485 Which statement is true about Oracle compression? A non-partitioned table can use Advanced Compression and Hybrid Columnar Compression concurrently. A partitioned table can define the use of Advanced Compression or Hybrid Columnar Compression for each partition. Hybrid Columnar Compression can be defined for a single column. A partitioned table can use only Advanced Compression or only Hybrid Columnar Compression. 2 SC edit delete
40 1Z0-485 Your customer has purchased their brand new Exadata Database Machine X3-2 Full rack to achieve 20-TB-per-hour backups on their 300 TB database. 40-qexes.png LVM snapshots are not configured properly on the Database Server. The Media Server to Tape Library transfer is causing a bottleneck. The number of tape drives is causing a bottleneck. Exadata backups are being performed using RMAN over the 10 Gigabit Ethernet network. The number of database servers is causing a bottleneck. 2, 3 MC edit delete
39 1Z0-485 If your customer wants to save storage space by compressing tables that are read frequently but rarely updated, which compression technique would you recommend? OLTP ARCHIVE HIGH QUERY HIGH ARCHIVE LOW BASIC 3 SC edit delete
38 1Z0-485 Which two migration will result in the least down time for a physical or logical migration of a database with active users during the migration? using GoldenGate using SQL Developer migration tools using Data Guard Physical Standby using cross-platform transportable tablespaces using incremental cross-platform RMAN restore 1, 3 MC edit delete
37 1Z0-485 You are concerned about how recovery from a failed Exadata Storage Server would work. Which statement is true about the Exadata CELLBOOT USB? Exadata automatically copies OS binaries and configuration files from another cell during patching to sync the internal USB. Regular Exadata Storage Server patches make sure that the internal USB is updated so that it can be used for recovery. Changes to network configuration files are possible without using ipconf.pl as long as all relevant files are updated. Some space from the CELLBOOT USB is used for cache metadata when write back flash cache is enabled. Each patch that is performed on Exadata storage servers requires manual resync of the CELLBOOT USB. 2 SC edit delete
36 1Z0-485 After migrating from legacy disk-based configuration, which three approaches would you use to evaluate the efficiency of Exadata Flash Cache? Review the Flash Hit rate via cellcli metrics. Compare Optimized Physical Reads and Total Read Requests in Automatic Workload Repository (AWR). Review the IOSTAT data that is gathered from each compute node by OS Watcher. Evaluate the Smart Flash Logging efficiency metrics via CellCLI. Check I/O latency on large I/O to Temp in AWR. 1, 2, 4 MC edit delete
35 1Z0-485 Which table compression technique will not work on Exadata without licensing the Oracle Advanced Compression Option? COMPRESS COMPRESS BASIC COMPRESS FOR OLTP COMPRESS FOR QUERY COMPRESS FOR ARCHIVE 3 SC edit delete
34 1Z0-485 Identify four significant changes when a backup of Exadata compute nodes must be performed. application of operating system patches before shutdown to preserve storage indexes application of Oracle patches reconfiguration of significant operating system parameters installation or reconfiguration of significant non-Oracle software storage server rebalancing addition of an Exadata storage expansion rack 1, 3, 4, 7 MC edit delete
33 1Z0-485 Storage indexes are unique to the Exadata Database Machine and their primary goal is to reduce the amount of I/O required to service I/O requests for Exadata Smart Scan. Put the following steps in order: 33-qexes.png 3. 7, 5, 2, 1, 6, and 4 3, 7, 1, 5, 6, 2, and 4 3, 6, 1. 7, 2, 5 and 4 3, 5, 1, 7, 6, 2. and 4 4 SC edit delete
32 1Z0-485 Which statement is true about the patching features provided in Platinum Services? Patching services are available for the full software stack up to twice per year. Patching support includes Exadata, Exalogic, and Database Appliance. Rolling window and complete down time approaches are two options to patching. Platinum covers Exadata storage software and firmware patching, but the customer must perform database patching. 3 SC edit delete
31 1Z0-485 You are asked to enable Write Back Flash Cache for one of your customers X3-2 Full Rack in a rolling fashion. 31-qexes.png G. B, C, A, F, E, D, and G G, A, B, C, F, E, D, and G G, C, B, A, F, E, D, and G G, E, C, B, F, A, D, and G 3 SC edit delete
30 1Z0-485 The Exadata compute node, exadbs04, has been having issues for some time. The server had to be repaired and you just received a new server. Your LVM snapshot was corrupt and now the compute node must be re-image with an Oracle Support installation image. Which three tasks would you need to perform to re-image the compute node? Mount the LVM backup image across the network and recover the system. Remove exadbs04 from the RAC cluster and all associated Oracle Homes from the central inventory. Create a CELLBOOT USB Flash Drive using an external USB drive. Reboot the new server using a bootable recovery image from the external USB drive. Reconfigure all site-specific settings (host name, IP addresses, NTP server, and so on). 3, 4, 5 MC edit delete
29 1Z0-485 Which Exadata feature uses Flash as a parallel write cache to Disk Controller Cache? Exadata DRAM InfiniBand network cache high performance SAS disks Smart Flash Log Hybrid Columnar Compression 4 SC edit delete
28 1Z0-485 Which is a best practice for High Availability (HA) in an Exadata environment? Checksums performed on the Exadata Storage Server ensure logical consistency of block content. When a standby database is in place, DB_BLOCK_CHECKING is not required and thus not recommended. Oracle Exadata Storage Server Software HARD checks operate transparently after enabling DB_BLOCK_CHECKSUM on a database. Due to the different architecture that Exadata has with storage servers, compared to regular Storage Area Network, DB_LOST_WRITE_PROTECT need not be set. Stretched RAC is the best alternative for Exadata that combines both HA and DR into one. 3 SC edit delete
27 1Z0-485 Identify the correct steps required to upgrade a 1/8th rack of Exadata to a 1/4th rack. Remove the doors of the 1/8th rack. Add the new servers. Cable the Database Servers in the rack. Cable the Exadata Storage Servers in the rack. Close the rack. Activate all cores by using a software command. Activate all hard drives and flash drives. Create the grid disks. Expand the Oracle ASM diskgroups. Review the new configuration. Remove the doors of the 1/8th rack. Add an additional Sun Datacenter InfiniBand Switch. Add the new servers. Cable the Database Servers in the rack. Cable the Exadata Storage Servers in the rack. Close the rack. Configure the new hardware. Activate all cores by using a software command. Activate all hard drives and flash drives. 2 SC edit delete
26 1Z0-485 How does partition pruning, a 11gR2 database feature, help to improve performance on an Exadata Database Machine? Partition pruning allows you to reduce a 5 TB I/O operation to a much smaller I/O operation and therefore, enables a much faster return of information. Using partition pruning can force the optimizer to use that method instead of Smart Scan. Partitioning in Exadata should be used wisely Partition pruning is not a supported option in the 11gR2 database code that runs on an Exadata Machine, due to issues with Cost Based Optimizer plans. Partition pruning allows you to reduce the size of the physical table by reducing fragmentation within the individual tables. Partition pruning allows you to reduce a 5 TB I/O operation to a larger I/O operation and therefore, forces the use of the Smart Scan technology. 1 SC edit delete
25 1Z0-485 You are measuring the I/O savings provided by storage indexes for Table A. One of your scripts displays the I/O savings as a result of the storage indexes. Which two statements are true? The storage indexes were disabled using the disable_storage_INDEX Parameter. Storage Index data is not on the Cell Server's region index memory structures yet because this predicate has not been used. Since the database was started, no quires were run against this table with the same predicate. The storage indexes reduced the amount of physical I/O bytes significantly for this query. 2, 3 MC edit delete
24 1Z0-485 You are concerned about how to recover from a failed Exadata Storage Server. What is the best way to recover from a storage cell failure when content in both system disks is lost? Database Machine Administrators should be prepared by creating a backup using dbserver_backup.sh. Database Machine Administrators should be prepared by creating a backup to an NFS file location as described in the owners guide. Any USB can be plugged in to create a backup. Be sure that you have a backup by running make_cellboot_usb.sh in /opt/oracle.cellos. Use the Exadata Storage Server rescue functionality that Is provided on the CELLBOOT USB flash drive. Re-imaging the cell is the only option. 5 SC edit delete
23 1Z0-485 When an Exadata Storage Server hard disk failure alert is received, what manual action must you take to restore the system to full redundancy? Replace the disk and run MegaCLI to rebuild the degenerate mirror. No manual action is required because Automatic Storage Management (ASM) fast mirror resync is automatic No manual action is required because ASM rebalancing is automatic. Replace the disk and manually copy the mirror extents to the new drive. Run RMAN REPAIR FAILURE. 3 SC edit delete
22 1Z0-485 When should you use Hybrid Columnar Compression? always on large active tables where deeper compression is desired on tables or partitions that have fairly static data on every table where Advanced Compression is not used 3 SC edit delete
21 1Z0-485 High-disk IOPS (I/Os per second) rates are leading to longer execution times. Which three approaches would you use to improve this scenario? Enable Write-Back Flash Cache due to heavy DBWR usage. Enable Write-Back Flash Cache due to heavy LGWR usage. Swap hard disks to High Capacity disks. Tune the application to reduce I/O requests. Leverage IORM to give priority to critical workloads. 2, 4, 5 MC edit delete
20 1Z0-485 Identify the three values to which the cell_flash_cache attribute can be set. read WRITE KEEP DEFAULT NONE 3, 4, 5 MC edit delete
19 1Z0-485 In looking to improve query performance for your Data Warehouse, select the best way that Exadata's Flash Cache feature can be leveraged? Enable Smart Flash Log. Execute alter table ... cell_flash_cache=keep on heavily scanned tables. Enable Write Back Flash Cache. Create an ASM diskgroup on Flash Cache and move the indexes from disk to Flash. 2 SC edit delete
18 1Z0-485 Which Exadata feature eliminates unnecessary data transfers between database nodes and storage? database views InfiniBand networking Flash Cache high performance SAS2 disk drives cell offloading 5 SC edit delete
17 1Z0-485 Your customer is hesitant to install the Oracle Configuration Manager in their environment. Give them three ways in which it will benefit their Exadata Database Machine support experience and potentially resolve some of the issues they are having with the length of time it is taking Oracle to process their Exadata Service Requests (SRs). Host information can be gathered and sent to Oracle for license compliance. Potential issues can be addressed before they impact operations. Priority handling can be extended for SRs, with attached configuration. Exadata patching cannot be done successfully without the Oracle Configuration Manager. Root cause analysis can be accelerated. 2, 3, 5 MC edit delete
16 1Z0-485 Which statement is true about Exadata Storage Servers? The Exadata Storage Server automatically deletes old diagnostic and metric files. Exadata requires a running database instance on all storage servers and database servers. Redundancy for user data stored in a database that is running on Exadata is achieved with RAID5. Communication between a database and an Exadata storage flows over low latency 10 Gigabit Ethernet. Exadata uses network affinity to determine which storage server data is written. 1 SC edit delete
15 1Z0-485 Which two statements are true about migrating your database to Exadata? Because Exadata uses InfiniBand, in order to migrate your database to Exadata, you must have InfiniBand on the system that you are migrating from. Using Data Guard Physical Standby to migrate from an 11.1 database to Exadata is beneficial because it allows you to adopt HCC during migration. ASM and database best practice configuration supplied during Exadata deployment should be retained during and after migration, Logical migration methods allow more flexibility than physical methods to change the database structure for best performance. All indexes should be dropped when migrating to Exadata. 3, 4 MC edit delete
14 1Z0-485 How would you execute CellCLI commands and scripts? using SQL*Plus on database nodes by CellCLI commands executed on the database nodes using third party tools after installing the CellCLI RPM plug-in directly executing the commands and scripts on the Exadata storage cell remotely by connecting to Port 1521 using SSL 4 SC edit delete
13 1Z0-485 Which two statements describe correct network configuration for Exadata Database Machine? The InfiniBand network subnet manager runs on all database servers to achieve High Availability. Oracle Clusterware communication is configured to use the management network. The InfiniBand network interfaces on Linux servers are configured using active- passive bonding. Database connections to the SCAN listener route through the Ethernet switch in the Exadata rack. Database servers are deployed with three logical network interfaces configured: management, client access, and private. 3, 4 MC edit delete
12 1Z0-485 When would be the best time to run an Exadata health check (exachk)? before patching, before upgrades, before backups, and on a regular basis after patching, after upgrades, and after backups only when advised by Oracle Support before and after patching, when advised by Oracle Support, and on a regular basis only after a hardware failure monthly and after a hardware failure 4 SC edit delete
11 1Z0-485 What are two choices that a customer must make that impact diskgroup creation? What is the level of redundancy required? What OS will be run? Where will disk backups be written? How many databases will run on the cluster? 1, 3 MC edit delete
10 1Z0-485 Your customer wants to increase the size of the DATA diskgroup on the Exadata systems. The customer is currently using 600 GB disks. Which two are the best options that you would recommend? adding a High Capacity Storage expansion rack expanding the Exadata rack from a Half Rack to a Full Rack moving underutilized grid disks from the RECO diskgroup to DATA adding a ZFS storage appliance adding a High Performance Storage expansion rack 2, 5 MC edit delete
9 1Z0-485 Which two DML operations will add rows compressed by Hybrid Columnar Compression (HCC) to a table that is created to use HCC? INSERT insert with an append hint UPDATE CREATE TABLE AS SELECT 2, 4 MC edit delete
8 1Z0-485 Which two statements are true about troubleshooting failed patching activities? Dependency issues found during yum updates require rolling back to a previous release before retrying. Bundle patches applied using opatch auto cannot roll back only the database or the grid infrastructure home. Failed OS patches on database servers can be rolled back. Failed storage cell patches are rolled back to the previous release automatically. Database server OS updates can be rolled back using opatch auto -rollback. Dependency issues found during yum updates should be ignored using the force option. 1, 4 MC edit delete
7 1Z0-485 Identify three Exadata Storage Server software processes and their purpose? CELLSRV: The Cell Server is responsible for servicing disk I/O and predicate processing offload. CELLSRV: The Cell Server is responsible for balancing workload to other storage servers. MS: The Management Server is responsible for storage cell management and configuration. MS: The Management Server is responsible for starting a local Enterprise Manager agent. RS: The Restart Server is responsible for Automatic Storage Management (ASM) instance restart. RS: The Restart Server is responsible for CELLSRV and MS monitoring and restart. 1, 3, 6 MC edit delete
6 1Z0-485 Which two statements are true about enabling write-back flash cache? When enabling write-back flash cache in a non rolling manner, it is important to ensure that asmdeactivatonoutcome is set to YES and asmModestatus is set to ONLINE for all grid disks. Before using write-back flash cache, you need to verify the minimum required versions. Before write back-flash cache is enabled, you need to drop the Flash Cache first. The setting flashCacheMode should be set to writeback by updating cellinit.ora and restarting cellsrv. When enabling write-back flash cache in a rolling manner, dcli should be used to inactivate the grid disks on all cells first. 2, 3 MC edit delete
5 1Z0-485 Which two attributes describe key benefits of the InfiniBand network? All Exadata database servers have a direct path link to each Exadata Storage Server. Cell-to-cell communication uses Reliable Datagram Sockets (RDS) over InfiniBand to achieve low latency. Expanding from two Full racks to four only requires adding an external InfiniBand switch to be at the top of the fat-tree topology. Each InfiniBand link provides 10 Gigabits of bandwidth. Oracle's interconnect protocol uses direct memory access (DMA) to eliminate buffer copies and reduce CPU use. 3, 5 MC edit delete
4 1Z0-485 Consider the following software changes that are performed manually on a Linux server: 04-qexes.png 1, 2, 3, and 4 only 3 none only 2 only 1 and 2 only 2 and 3 3 SC edit delete
3 1Z0-485 A customer has three databases named CC. FIN, and DW. The CC database is for their CallCenter. 03-qexes.png DBRM on the CC database DBRM on all the databases IORM, because DBRM cannot be changed for an existing session IORM and DBRM 2 SC edit delete
2 1Z0-485 Which is the best location to point your customer to, for finding the latest Exadata patches? owner's guide Patch database in MyOracle Support MyOracle Support note 888828.1 MyOracle Support for database patches, ULN for OS patches, and Sun Support for Server and InfiniBand patches. 3 SC edit delete
1 1Z0-485 Exadata Database Machine offers an Intelligent Platform Management Interface for the various components in the Exadata product. Which option is true? IPMI can be used to remotely start and stop servers. IPMI can be used to remotely log in to the operating system. IPMI commands can be executed by using SNMP traps. IPMI settings can be secured by backing up the Oracle Linux installation on the storage system. 1 SC edit delete

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