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Oracle database 10g:Administration I Sample Questions:

1. You received complaints about the degradation of SQL query performance. You identified top SQL queries that consume time. What would be your next step to find out recommendations about statistics collection and restructuring of the SQL statement to improve query performance?

A) run the Automatic Database Diagnostic Monitor (ADDM) on top SQL statements
B) run Segment Advisor
C) run the Automatic Workload Repository (AWR) report
D) run SQL Tuning Advisor on top SQL statements

2. A user receives the following error while executing a query:
ORA-01555: snapshot too old
Which two options can be the solutions to avoid such errors in future? (Choose two.)

A) increase the size of the default temporary tablespace
B) enable the retention guarantee for the undo tablespace
C) increase the size of redo log files
D) increase the size of the undo tablespace
E) increase the size of the Database Buffer Cache

3. Users of HR schema complain about slower-than-normal performance. On investigation the DBA found that maintenance was recently performed on some of the tables. The DBA traced the query that takes longer than normal to execute.
View the Exhibit exhibit_before.
After the DBA resolves the problem, the query performs normally.
View the Exhibit exhibit_after.
What action would the DBA have taken to resolve the performance problem?

A) moved the indexes associated with the EMPLOYEES table to the same tablespace where the EMPLOYEES table exists
B) moved the EMPLOYEES table in to a locally managed tablespace
C) moved the EMPLOYEES table to another location in the same tablespace
D) analyzed the EMPLOYEES table to collect the current statistics
E) reorganized the associated indexes for the EMPLOYEES table that were in an unusable state

4. A constraint in a table is defined with the INITIALLY IMMEDIATE clause. You executed the ALTER TABLE command with the ENABLE VALIDATE option to enable the constraint that was disabled. What are the two effects of this command? (Choose two.)

A) It prevents insert, update, and delete operations on the table while the constraint is in the process of being enabled.
B) It enables the constraint to be enforced at the end of each transaction.
C) It fails if any existing row violates the constraint.
D) It does not validate the existing data in the table.

5. Your database is configured with the following parameters related to SGA:
SGA_TARGET=256MB
SHARED_POOL_SIZE=32MB
DB_CACHE_SIZE=100MB
LARGE_POOL_SIZE=0
JAVA_POOL_SIZE=0
STREAMS_POOL_SIZE=0
Which two statements are true about the configuration? (Choose two.)

A) The shared pool and the default buffer pool will not be sized bigger than 32 MB and 100 MB, respectively.
B) The SGA_TARGET value cannot be sized smaller than 100 MB.
C) 124 MB (256 minus 132) of memory is available for use by all the manually sized components.
D) 124 MB (256 minus 132) of memory is available for use by all the manually and automatically sized components.
E) The shared pool and the default buffer pool will not be sized smaller than 32 MB and 100 MB, respectively.

Solutions: