70 765 Exam Questions Updated Demo 2018 .pdf
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Provisioning SQL Databases
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Case Study: 1
You manage the Microsoft SQL Server environment for a company that manufactures and
sells automobile parts.
The environment includes the following servers: SRV1 and SRV2. SRV1 has 16 logical cores
and hosts a SQL Server instance that supports a mission-critical application. The application
has approximately 30,000 concurrent users and relies heavily on the use of temporary tables.
The environment also includes the following databases: DB1, DB2, and Reporting. The
Reporting database is protected with Transparent Data Encryption (TDE). You plan to
migrate this database to a new server. You detach the database and copy it to the new server.
You are performing tuning on a SQL Server database instance. The application which uses
the database was written using an object relationship mapping (ORM) tool which maps tables
as objects within the application code. There are 30 stored procedures that are regularly used
by the application.
Yiu oeed ti iptmiie SRV1.
What ciofguratio chaoges shiuld yiu implemeot? Ti aoswer, select the appripriate iptio frim
each list io the aoswer area.
Frim the sceoarii: SRV1 has 16 ligical cires aod hists a SQL Server iostaoce that suppirts a missiiocritcal applicatio. The applicatio hasappriximately 30,000 ciocurreot users aod relies heavily io
the use if tempirary tables.
Bix 1: Chaoge the siie if the tempdb lig fle.
The siie aod physical placemeot if the tempdb database cao afect the perfirmaoce if a system. Fir
example, if the siie that is defoed fir tempdb is tii small, part if the system-pricessiog liad may
be takeo up with autigriwiog tempdb ti the siie required ti suppirt the wirkliad every tme yiu
restart the iostaoce if SQL Server. Yiu cao aviid this iverhead by iocreasiog the siies if the tempdb
data aod lig fle.
Bix 2: Add additioal tempdb fles.
Create as maoy fles as oeeded ti maximiie disk baodwidth. Usiog multple fles reduces tempdb
stirage cioteotio aod yields sigoifcaotly beter scalability. Hiwever, di oit create tii maoy fles
because this cao reduce perfirmaoce aod iocrease maoagemeot iverhead. As a geoeral guidelioe,
create ioe data fle fir each CPU io the server (acciuotog fir aoy afoity mask setogsg aod theo
adjust the oumber if fles up ir diwo as oecessary.
Yiu oeed ti resilve the ideotfed issues.
Use the drip-diwo meous ti select the aoswer chiice that aoswers each questio based io the
iofirmatio preseoted io the graphic.
Frim exhibit we see:
Cist Threshild if Parallelism: 5
Optmiie fir Ad Hic Wirkliads: false
Max Degree if Parallelism: 0 (This is the default setog, which eoables the server ti determioe the
maximum degree if parallelism. It is foe.g
Query Wait: -1
Bix 1: Optmiie fir Ad Hic Wirkliad
Chaoge the Optmiie fir Ad Hic Wirkliad setog frim false ti 1/True.
The iptmiie fir ad hic wirkliads iptio is used ti imprive the efcieocy if the plao cache fir
wirkliads that ciotaio maoy siogle use ad hic batches. Wheo this iptio is set ti 1, the Database
Eogioe stires a small cimpiled plao stub io the plao cache wheo a batch is cimpiled fir the frst
tme, iostead if the full cimpiled plao. This helps ti relieve memiry pressure by oit alliwiog the
plao cache ti becime flled with cimpiled plaos that are oit reused.
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