What are the Container-managed transactions ?

Posted in: EJB Interview Questions with Answers

NotSupported : 

• container invokes enterprise Bean method with an unspecified transaction context.

Required : 

• container invokes enterprise Bean method with a valid transaction context.

Supports :

• If the client calls with a transaction context, same as Required.
• If the client calls without a transaction context, same as NotSupported.

RequiresNew : 

• container invokes enterprise Bean method with a new transaction context.

Mandatory : 

• container invokes enterprise Bean method with the client’s transaction context.

Never : 

• container invokes an enterprise Bean method without a transaction context.
• client is required to call without a transaction context.