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Oracle 1Z0-042 Exam Syllabus Topics:

Oracle database 10g:Administration I Sample Questions:

1. Which is the correct description of the significance of the ORACLE_HOME environmental variable?

A) It specifies the directory for database files, if not specified explicitly.
B) It specifies the directory containing the Oracle software.
C) It specifies the base directory of Optimal Flexible Architecture (OFA).
D) It specifies the directory containing the Oracle-Managed Files.

2. 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) 124 MB (256 minus 132) of memory is available for use by all the manually sized components.
B) The shared pool and the default buffer pool will not be sized smaller than 32 MB and 100 MB, respectively.
C) 124 MB (256 minus 132) of memory is available for use by all the manually and automatically sized components.
D) The shared pool and the default buffer pool will not be sized bigger than 32 MB and 100 MB, respectively.
E) The SGA_TARGET value cannot be sized smaller than 100 MB.

3. The ST_INFO master table has millions of rows that are updated very rarely. It has a STATE_CODE column that contains the value for 25 states. The table is frequently queried on the STATE_CODE column. Which type of index would you suggest to improve the query performance?

A) reverse key
B) B-tree
C) function based
D) bitmap

4. View the Exhibit and analyze the CREATE TABLE statements used to create the ITEMS and ORDERS tables.
The ITEMS table has 50 rows and ORDERS table has 500 rows. Because you decide to not deal with the item code 188 in future, you execute the following command to remove the item:
SQL> DELETE FROM items WHERE item_code=188;
What is the effect of this command?

A) The row containing the value 188 corresponding to the ITEM_CODE column is deleted from the ITEMS table, and the dependent rows in the ORDERS table are populated with
NULL values in their ITEM_CODE columns.
B) The command fails with integrity violation error.
C) The row containing the value 188 corresponding to the ITEM_CODE column is deleted from the ITEMS table, and the dependent rows in the ORDERS table are also deleted automatically.
D) The row containing the value 188 corresponding to the ITEM_CODE column is deleted from the ITEMS table, and the foreign key constraint is disabled in the ORDERS table.

5. When you try to start the Database Control by using the emctl start dbconsole command the following error is displayed:
TZ set to America/New_york
OC4J Configuration issue. /u01/app/oracle/product/10.1.0/db_1/oc4j/j2ee/OC4J_DBConsole_orcl.us.oracle.com not found.
Which two environment variables do you need to set appropriately to avoid such errors, and start the Database Control successfully? (Choose two.)

A) LD_LIBRARY_PATH
B) ORACLE_SID
C) ORACLE_HOME
D) NLS_LANG
E) ORACLE_BASE

Solutions: