It is just like the smoke testing..testing the application 
randomly to check the major functionality of the 
application is working correctly according to the 
requirements or not.

Hello ganga,  PLz dnt mind but adhoc testing and smoke 
testing are not the same.Smoke testing is being done prior 
to telease the build to check whether the software is ready 
for the further testing or not.
 And Adhoc testing is the subset of monkey testing where no 
test cases are being defined,it is being done due to the 
lack of time.

Plz correct me if i m wrong.....
nitin9360@gmail.com

Hi 

  if time is less to test more than 1000 test cases then we
 have to go for adhoc testing, test weather client
 requirements mapping with test cases there we can used RTM 
method.

Generally testers will go farmal testing but due to lack of 
time they conduct an informal testing on Main 
functionalities called Adhoc testing
Monkey ,Buddy,Exploratory,pair all thesre are comes under 
Adhoc testin only

doing a short cut way does not follow sequential order.

due to lack of time 
due to lack of skills (or) knowledge
due to lack of resource
due to lack of documentation
we will go for adhoc testing.

Testing the application without Reffering any document and 
No further Document is prepared after Testing.

The Testers will do Adhoc Testing when there is Lack of 
time.