types of exceptions and what is meant by pragma autonomous

types of exceptions and what is meant by pragma
autonomous_transaction ?what is the use.

Question Posted / gavini srikanth

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types of exceptions and what is meant by pragma autonomous_transaction ?what is the use...

Answer / madhav

Exceptions are 3 types
.Predefined
.by default oracle provide error handlers and error
numbers.user can handle that.
data_not_found,too_many_rows,cursor_already_open
.Non predefined exceptions
.Error handlers are not available
.Only Error numbers are avalable
.By using pragma user can handle that
example:- child_record exception;
pragma exception_init(child_record,-2292);
.User defined exceptions
.Error handlers are not available
.Error numbers are also not available
.user can raise and handle that based on business
logic
example:-no_data exception(declaration section)
raise no_data(execution section)
when no_data then(exception sectiion)
dbms_output.put_line('data is not
available');
end;

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types of exceptions and what is meant by pragma autonomous_transaction ?what is the use...

Answer / suresh babu

Two types of exceptions used in oracle.
1.Predefined exceptions,which defined by oracle
already.Ex-NO_DATA_FOUND,DIVIDE_BY_ZERO,etc...
2.User defined exceptions,which defined by the user based on
their application requirement.

pragma autonomous_transaction is an independent
transaction.Once we issue commit,we cannot rollback except
the block,where we mentioned autonomous_transaction.

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types of exceptions and what is meant by pragma autonomous_transaction ?what is the use...

Answer / muthu nagaraj

pragma autonomous_transaction are used to implement DCL
queries in a trigger

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types of exceptions and what is meant by pragma autonomous_transaction ?what is the use...

Answer / rajesh venati

Exceptions are classified into two types,
They are
1. Predefined Exceptions
2. User Defined Exceptions
==> Oracle created some of the Predefined Exceptions like
ex: no_data_found etc.,

==> User Defined Exceptions are created by us.
types of user defined exceptions are
a. Raise
b. Raise_Application_Error
One more exception also there
pragma exception_init(exception,error_code)

Then come for Pragma Autonomous Transaction.

Pragma Autonomous Transaction is used to commit or rollback
the active block only.
As well as in a triggers dcl commands are not possible to
used, if u want use dcl command inside a triggers then we
will go for pragma autonomous transaction.

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