How do you catch an exception inside a cursor loop?
How do you catch an exception inside a cursor loop?
HANDLE EXCEPTIONS INSIDE CURSOR LOOP
- STEP 1: CREATE a TABLE to Capture Error Logs:
- STEP 2: CREATE PL/SQL Block to Handle Exception inside Cursor Loop.
What are cursor exceptions in Oracle?
When an exception is raised, Oracle searches for an appropriate exception handler in the exception section. Only one exception can be raised in a Block and the control does not return to the Execution Section after the error is handled.
How can we create exception in Oracle procedure?
DECLARE exception_name EXCEPTION; BEGIN IF condition THEN RAISE exception_name; END IF; EXCEPTION WHEN exception_name THEN statement; END; You can use the above syntax in raising the Oracle standard exception or any user-defined exception.
How are unexpected errors handled in Oracle explain briefly?
To handle unexpected Oracle errors, you can use the OTHERS handler. Within this handler, you can call the functions SQLCODE and SQLERRM to return the Oracle error code and message text. Once you know the error code, you can use it with pragma EXCEPTION_INIT and write a handler specifically for that error.
How do you handle exceptions in loop?
Whenever an exception occurred in a loop the control gets out of the loop, by handling the exception the statements after the catch block in the method will get executed. But, the loop breaks.
How many types of exception are there in SQL?
Exception types There are three types of exceptions: Predefined exceptions are error conditions that are defined by PL/SQL. Non-predefined exceptions include any standard TimesTen errors. User-defined exceptions are exceptions specific to your application.
How do I write an exception in SQL?
PL/SQL Exception Handling
- DECLARE.
- BEGIN.
- EXCEPTION.
- WHEN exception1 THEN.
- exception1-handling-statements.
How do you write a FOR loop cursor?
The cursor FOR LOOP statement implicitly declares its loop index as a record variable of the row type that a specified cursor returns, and then opens a cursor. With each iteration, the cursor FOR LOOP statement fetches a row from the result set into the record.
Can we use FOR loop in cursor?
Introduction to PL/SQL cursor FOR LOOP statement A nice feature of the cursor FOR LOOP statement is that it allows you to fetch every row from a cursor without manually managing the execution cycle i.e., OPEN , FETCH , and CLOSE . If there is no row to fetch, the cursor FOR LOOP closes the cursor.
Can we throw exception in for loop?
General idea is that only thing that you can do – store exception somewhere before throwing it. If you throwing exception – then only way to avoid breaking loop is to catch it immediately. One possibility – move the entire body of the loop into another method which handles the exceptions without re-throwing: e.g.
How to handle exceptions outside of the cursor loop?
In this case, we need to create two Exception handling code, first one is to handle the error while processing records through Cursor Loop and the other one is to handle Exceptions outside the Cursor Loop. SQL> CREATE TABLE ERROR_LOG 2 ( 3 ERROR_CODE VARCHAR2 (20), 4 ERROR_DESC VARCHAR2 (400) 5 ); Table created.
How is exception handling handled in PL / SQL?
That is, normal execution stops and control transfers to the exception-handling part of your PL/SQL block or subprogram. Internal exceptions are raised implicitly (automatically) by the run-time system. User-defined exceptions must be raised explicitly by RAISE statements, which can also raise predefined exceptions.
How are user defined exceptions handled in Oracle?
User-defined exceptions are exceptions specific to your application. In TimesTen, these three types of exceptions are used in the same way as in Oracle Database. You are not required to declare these exceptions. They are predefined by TimesTen. TimesTen implicitly raises the error.
What does an explicit cursor do in Oracle?
An explicit cursor is an SELECT statement declared explicitly in the declaration section of the current block or a package specification. For an explicit cursor, you have the control over its execution cycle from OPEN, FETCH, and CLOSE. Oracle defines an execution cycle to execute an SQL statement and associates a cursor with it.