Cursor sharing in Oracle is a feature that allows multiple sessions to share the same cursor, which can improve performance by reducing the overhead of parsing and optimizing statements. Oracle can share cursors for the following types of statements: Oracle uses a library cache to store shared cursors. When a session executes a statement, Oracle […]
Cache Fusion in Oracle RAC. How does it work, and what benefits does it offer in a clustered environment?
Cache Fusion is a fundamental technology in Oracle Real Application Clusters (RAC) that facilitates efficient data sharing and synchronization between the instances or nodes in a clustered database environment. It plays a crucial role in maintaining data consistency, minimizing contention, and optimizing performance in Oracle RAC. Here’s how it works and the benefits it offers: […]
Oracle Real Application Clusters (RAC) One Node is a high availability solution for Oracle Databases that runs on a single server. It is designed to provide the benefits of RAC, such as failover, scalability, and performance, without the need for multiple servers. RAC One Node works by creating two instances of the database on the […]
Program Global Area (PGA) The Program Global Area (PGA) is a type of memory in an Oracle database that is specific to an individual operating process or thread. It is not shared with other processes or threads on the system. Unlike the System Global Area (SGA), which is shared among multiple processes, the PGA is […]