In Oracle databases, understanding and tuning wait events is crucial for database performance. One set of wait events that often demands attention, particularly in data-intensive operations, is the direct path read temp and direct path write temp events. These events relate closely to how data is read and written between disk and memory, specifically the […]
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 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 […]