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Which two are true about the allocation of I/O resources by IORM within the CELLSRV process?
B: Rules in an interdatabase resource plan specify allocations to databases, not consumer groups.
E: Redo and control file writes always take precedence.
You plan to partition the database and storage grids in an X5-2 full rack, creating two clusters and two storage grids without using virtualization.
One cluster will be used for production and should consist of six database servers and nine storage servers.
The other cluster will be used for test and development, and should consist of two database servers and five storage servers.
The storage must be partitioned so that the storage servers are visible only to the appropriate database servers that are meant to access them.
What must be done to achieve this?
The cellinit.ora file is host-specific, and contains all database IP addresses that connect to the storage network used by Oracle Exadata Storage Servers. This file must exist for each database that connect to Oracle Exadata Storage Servers.
The cellinit.ora file contains the database IP addresses.
The cellip.ora file contains the storage cell IP addresses.
Both files are located on the database server host.
References:
http://docs.oracle.com/cd/E80920_01/SAGUG/exadata-storage-server-configuring.htm#SAGUG20369
You wish to determine if the I/O resource management plan that you created has helped improve the performance of OLTP category I/Os on your X6 Exadata Database Machine.
You decide to examine the relevant metrics on all the cells, to see whether the I/O rate has improved for this category compared to last week, and whether waits and wait time have been reduced.
You issue this command on the first cell:
You examine the output from the first cell which contains:
Which two sets of metrics would you use to determine whether the I/O performance has improved for the OLTP category for the duration of the one-hour measurement period?
Which type or types of network traffic are transported over the internal InfiniBand interconnect in Exadata Database Machine X5?
Oracle Exadata uses the Intelligent Database protocol (iDB) to transfer data between Database Node and Storage Cell Node.
iDB is used to ship SQL operations down to the Exadata cells for execution and to return query result sets to the database kernel.
Your X6 Exadata Database Machine is running Oracle Database 12c, and has a large database with some very large tables supporting OLTP workloads.
High-volume insert applications and high-volume update workloads access the same tables.
You wish to compress these tables without causing unacceptable performance overheads to the OLTP workload.
Which three are true regarding this requirement?
A: Creating a Table with Advanced Row Compression
The following example enables advanced row compression on the table orders:
CREATE TABLE orders ... ROW STORE COMPRESS ADVANCED;
B: ARCHIVE LOW compression (Exadata only), recommended for Archival Data with Load Time as a critical factor
