GridLink data sources are designed for use with an Oracle RAC database. By using the Fast
Connection Failover (FCF) pattern, GridLink data sources can quickly react when a RAC node
goes down.
Which two statements are true?
A.
TheOracleNotification service is used to notify the data source ofchanges to RAC nodes.
B.
The reaction is quick, because in usingFCF allnetwork timeouts are set very low.
C.
FCF is faster becauseitpollsandtestsconnection, freeing the data source from these tasks.
D.
FCF requires the use and configuration of a databaseserver in the GridLink data source.
E.
You can use anyOracleThindatabasedriver with a GridLinkdata source.
Correct answer: A, D
Answer : /A /D
A is right : In order for Fast Connection Failover to work, you must configure ONS correctly. ONS is shipped as part of Oracle Database 11g.
Source : http://docs.oracle.com/cd/E11882_01/java.112/e16548/fstconfo.htm#JJDBC28827
B is wrong : TAF works at the network level on a per-connection basis,
C is wrong: http://docs.oracle.com/middleware/1212/wls/JDBCA/fastconnect.htm#JDBCA496
D is right: Fast Connection Failover is based on the Oracle RAC event mechanism. This means that Fast Connection Failover is efficient and detects failures quickly for both active and inactive connections
source : http://docs.oracle.com/cd/E11882_01/java.112/e16548/fstconfo.htm#JJDBC28835
E is wrong :
Dude, your explanations are not even corresponding to the actual multiple choice answers given?
Answer: A,D
xnc5bsxnrbscngfrfgc4ecgdgf … why moderators allows irrelevant comments like that one?
A is right
B is Wrong
C is Wrong
D is Wrong – For GridLink use a RAC not a Database Server
E is right – Can use any and just thin driver
Hello, i believe that i saw you visited this site thus i located “return the favor”.I’m attempting to locate things to enhance my website!I suppose its ok make use of some within your ideas!!
rca ieftin http://goo.gl/6GqA7S
A,D
Explanation D:
The underlying database has Oracle Database 11g Real Application Clusters (Oracle RAC) capability or Oracle Data Guard configured with either single instance Databases or Oracle RAC.
Add, why E is wrong:
Fast Connection Failover supports both the JDBC Thin and JDBC Oracle Call Interface (OCI) drivers.
Director / Direktur adalah seseorang yang ditunjuk untuk memimpin Perseroan terbatas (PT). Direktur dapat seseorang yang memiliki perusahaan tersebut atau orang profesional yang ditunjuk oleh pemilik usaha ( http://www.utuhwibowo.com ) untuk menjalankan dan memimpin perseroan terbatas. Penyebutan direktur dapat bermacam-macam, yaitu dewan manajer, dewan gubernur, atau dewan eksekutif.
This is one awesome blog.Really looking forward to read more. Really Great.