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Exam : Sybase 510-015
Title : Ase 12.0 Server Administration Professional


1. What are some ways to reduce last data page lock contention for inserts? (Choose 3)
A. alter the table to use the Datarows locking scheme
B. alter the table to use the Datapages locking scheme
C. partition the table
D. create a clustered index on a random key
E. increase the server configuration for the number of locks
F. increase the server configuration for the deadlock checking period
Answer: ACD

2. Given: number of worker processes = 10, max parallel degree = 5, max scan parallel degree = 4. Table A has the following characteristics: Datarows locking, No indexes, a column named price, 5000 rows, 4 partitions. A user executes the following query: Select * from A where price A. there are not enough worker processes available at run time
B. the database option select into/bulkcopy/pllsort is not set to true
C. the partition skew is 2.3
D. the database is set for single user mode
E. max parallel degree does not match the number of partitions
Answer: AC

3. The following query is executed frequently against the database.
select a.au_fname, a.au_lname,
ad.street, ad.city,
ad.state, ad.zip
from authors a, author_address ad
where a.au_id = ad.au_id
What database denormalization technique could be used to improve the performance of this query?
A. Move the au_lname and au_fname columns to the author_address table.
B. Collapse the author_address and authors table into a single table.
C. Move the city, state, and zip columns to the authors table.
D. Create a view called mailing_address to eliminate the two table join from the query.
E. Add the redundant column au_id to the author_address table.
Answer: B

4. All of the following execution class associations exist in the ASE when user FRED, running application ctisql, logs in. Which one will be applied to FREDs session?
A. sp_bindexeclass ctisql, AP, NULL, EC1
B. sp_bindexeclass ctisql, AP, FRED, EC2
C. sp_bindexeclass FRED, LG, NULL, EC1
D. sp_bindexeclass FRED, LG, ctisql, EC2
E. It depends on the order of the creation of the bindings
Answer: B

5. The ACME company has an 8 CPU SMP system running Adaptive Server Enterprise (ASE). The ASE server has been allocated 1.5 GB of 2.0 GB of memory available. The ASE server has been allocated 2 engines. There are 1,000 concurrent users of the ASE server.
The sp_sysmon report shows the spinlock contention rate averages 70-80% for the default data cache.
Which steps can be taken to correct this performance problem?
A. Add a 16KB buffer pool to the server.
B. Increase the size of the tempdb database.
C. Add two engines to the ASE server.
D. Add named caches to and bind the appropriate objects to the named caches.
E. Add more locks to the server.
Answer: D

6. Which two actions can cause locking on system tables in tempdb? (Choose 2.)
A. create table in tempdb
B. select into a #temptable
C. worktables created for reformatting
D. selecting from a large table in tempdb
Answer: AB

7. When a row is deleted on a table with datarows locking:
A. Rows on the page are moved up so the empty space is at the end of the page.
B. The space occupied by the deleted row is not reclaimed immediately.
C. The space occupied by the deleted row is filled with zeros.
D. The last row on the page is moved into the space created by the deleted row.
Answer: B

8. What is the purpose of dsync flag?
A. to synchronize primary and mirrored devices
B. to synchronize primary and secondary databases
C. to control whether writes to operating system files are buffered or not
D. to control Backup Server's access to a dump device
Answer: C

9. The reorg command may be used to: (Choose 2)
A. Compact a table that uses datarows locking.
B. Reclaim unused space in a table that uses allpages locking.
C. Reclaim unused space in an index that uses datapages locking.
D. Rebuild a table that uses allpages locking.
Answer: AC

10. Which of the following statements describes readpast locking? (Choose 2)
A. It can be specified at the session, transaction, and table level.
B. It allows insert, update, and delete commands to read past any incompatible lock.
C. It allows readers to not block writers.
D. It allows select and readtext queries to silently skip all rows or pages locked with incompatible locks.
Answer: BD

11. The "abstract plan language" is:
A. A language used to tell the optimizer how to process a query.
B. The internal command language used by sp_sysmon.
C. A new type of command language for creating very complicated queries.
D. The language used internally by the server for planning the most efficient use of memory.
Answer: A

12. Review the sp_sysmon section below.
Procedure Cache Management per sec per xact count % of total
---------------------------------------- --------- --------- -------- -----------
Procedure Requests 242.6 5.4 150267 n/a
Procedure Reads from Disk 1.8 0.0 1104 0.7 %
Procedure Writes to Disk 0.0 0.0 0 0.0 %
Procedure Removals 3.5 0.1 2180 n/a
Which statement is correct about this server's stored procedure activity?
A. This ASE server executes one committed transaction for each stored procedure executed.
B. 99.3% of the stored procedures are run using the WITH RECOMPILE option.
C. This report fragment is useful when sizing the Procedure Cache of ASE.
D. Additional online engines will be required to allow more stored procedures to execute per second.
Answer: C

13. Given:
The employees table has an index created as follows:
create index emp_index1
on employees(last_name, first_name desc)
Which of the following queries would not require a sort? (Choose 2)
A. select * from employees order by last_name, first_name
B. select * from employees order by last_name ASC, first_name DESC
C. select * from employees order by first_name DESC, last_name ASC
D. select * from employees order by last_name DESC, first_name ASC
Answer: BD

14. What are some ways to reduce last data page lock contention for inserts? (Choose 3)
A. alter the table to use the Datarows locking scheme
B. alter the table to use the Datapages locking scheme
C. partition the table
D. create a clustered index on a random key
E. increase the server configuration for the number of locks
F. increase the server configuration for the deadlock checking period
Answer: ACD