Table of Contents
How to set EJB transaction timeout?
You can specify a transaction timeout for an EJB 3.0 session bean using the following OC4J-proprietary annotations and their attributes:
- @StatelessDeployment attribute transactionTimeout.
- @StatefulDeployment attribute transactionTimeout.
How does EJB transaction work?
EJB Container/Servers are transaction servers and handles transactions context propagation and distributed transactions. Transactions can be managed by the container or by custom code handling in bean’s code. Container Managed Transactions − In this type, the container manages the transaction states.
Which of the following is correct about a transaction in EJB?
Q 5 – Which of the following is correct about a Durable transaction in EJB? A – If any of work item fails, the complete unit is considered failed. Success meant all items executes successfully.
What to do if transaction is timed out?
Step 1: Call the Bank’s Customer Care Service Helpline: As per the new 2019 rules from Reserve Bank of India (RBI), any amount so debited must be re-credited to the customer’s account within five working days of the complaint filing. Otherwise, the bank is eligible to pay Rs100 per day of delay.
What is the default transaction attribute to a method in an ejb?
Yes, CONTAINER and REQUIRED are the default.
What is a session bean in ejb?
A session bean is an EJB 3.0 or EJB 2.1 enterprise bean component created by a client for the duration of a single client/server session. A session bean performs operations for the client. Although a session bean can be transactional, it is not recoverable should a system failure occur.
What if amount is debited but transaction failed?
Your first step should be to call the bank’s 24-hour customer service helpline. After making a note of your issue and recording your transaction reference number, the executive will register your complaint and will issue you a complaint tracking number. The matter is then investigated.
What are attributes in @transactional?
A transaction attribute controls the scope of a transaction. Figure 27–1 illustrates why controlling the scope is important. In the diagram, method-A begins a transaction and then invokes method-B of Bean-2 .
How do you handle transactions in spring?
Spring supports both programmatic and declarative transaction management….
- Begin the transaction using begin transaction command.
- Perform various deleted, update or insert operations using SQL queries.
- If all the operation are successful then perform commit otherwise rollback all the operations.
What is EJB timer?
The EJB timer service provides a reliable and transactional notification service for timed events. Timer notifications may be scheduled to occur at a specific time, after a specific elapsed duration, or at specific recurring intervals. You can define callback methods on your EJB to receive these time-based events.