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Oracle SQL hints are used to manually control the execution plan of a query, overriding the optimizer’s default decisions regarding…

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

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

In earlier Oracle version, QUERY REWRITE feature used to stop working as soon as the materialized view become STALE, unless…

The SET TRANSACTION statement allows you to begin a read-only or read-write session,establish an isolation level,or assign the current transaction…

The DBMS_SHARED_POOL package provides access to the shared pool, which is the shared memory area where cursors and PL/SQL objects…

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

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

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

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

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