Master Oracle 1Z0-497 Exam with Reliable Practice Questions

Which statement is true regarding this connect string?

(DESCRIPTION

(FAILOVER=on)

(ADDRESS_LIST=

(LOAD_BALANCE=ON)

(ADDRESS=(host=sales-east1) (port=1522) )

(ADDRESS=(host=sales-east2)(port=1522))

(ADDRESS=(host=sales-east3) (port=1522) ))

(ADDRESS_LIST=

(LOAD_BALANCE=ON)

(ADDRESS=(host=sales-west1) (port=1522) )

(ADDRESS=(host=sales-west2) (port=JS22))

(ADDRESS=(host=sales-west3) (port=lS22) ) )

(CONNECT_DATA=

(SERVICE_NAME=sales)

(REGION=east)))

You connect to a database instance and execute a DML command that changes one data block. The block is read from the buffer cache, modified, and modified, and marked as dirty. You commit the transaction. What must take place before the block can be written to disk?

In Oracle Database 12c, when does a transaction begin?

Your customer is looking for zero-data-loss failover with maximum data protection and high availability for their primary database. Which two solutions would you recommend to the customer if the distance between the primary and the standby location is more than 300 miles?

What happens when you execute these SQL statements?

ALTER SYSTEM SET SGA_TARGET = 992M;

ALTER SYSTEM SET SHARED_POOL_SIZE = 0;

ALTER SYSTEM SET LARGE_POOL_SIZE = 0;

ALTER SYSTEM SET JAVA_POOL_SIZE = 0;

ALTER SYSTEM SET DB_CACHE_SIZE = 0;

ALTER SYSTEM SET STREAMS POOL SIZE = 0;