Category: PL/SQL

autonomous_transaction_isolation

Understanding AUTONOMOUS TRANSACTION with ISOLATION LEVEL

The default behavior of AUTONOMOUS TRANSACTIONS is that once a COMMIT/ROLLBACK occurs in the AUTONOMOUS TRANSACTION, those changes are visible…

with_optimization

WITH CLAUSE/SUBQUERY FACTORING OPTIMIZATION

If the content of the WITH clause is sufficiently complex, Oracle may decide to resolve the subquery into a global…

set

Understanding SET Operations In NESTED TABLE

Out of the three collection types, NESTED TABLE collection type supports SET operations in Oracle. x MULTISET EXCEPT [DISTINCT] y…

Accessible By

Understanding Oracle 12c ACCESSIBLE BY CLAUSE

The ACCESSIBLE BY clause can be added to packages, procedures, functions and types to specify which objects are able to…

RealTime Mview

Understanding DBMS_OUTPUT Package

Oracle provides the DBMS_OUTPUT package to enable you to send information from your programs to a buffer. This buffer can…

ptt

Understanding Private Temporary Table In Oracle

PRIVATE TEMPORARY TABLE Oracle 18c introduced the concept of a private temporary table, a memory-based temporary table that is dropped…

set

Understanding Global Temporary Table In Oracle

GLOBAL TEMPORARY TABLE Applications often use some form of temporary data store for processes that are too complicated to complete…

RealTime Mview

Collection As Table Column Datatype

In PL/SQL,we can use both VARRAY & NESTED TABLE collection type as table column datatype. The difference between these implementation…

Oracle-collection-method

PL/SQL Collection Methods

WHAT IS COLLECTION ? A collection is a data structure that acts like a list or a single-dimensional array of…