Database

Program Global Area (PGA)

Published by : Obay Salah , November 20, 2024

I previously mentioned that all Sessions are connected to the SGA memory, which is a type of Shared Memory for all Sessions connected to the Instance.... Continue Reading

Database

Automatic Shared Memory Management (ASMM)

Published by : Obay Salah , November 20, 2024

Memory management is one of the factors that affect performance. The database administrator may configure the SGA optimally for morning work... Continue Reading

Database

Steams Buffer

Published by : Obay Salah , November 20, 2024

This part of the memory is optional and is created through the STREAMS_POOL_SIZE parameter. The purpose of this memory area is to store ... Continue Reading

Database

Java Buffer

Published by : Obay Salah , November 20, 2024

This part of the memory is optional, and you may not need it if you are not storing any Java Stored Procedures. However, in general, this part ca... Continue Reading

Database

Large Pool

Published by : Obay Salah , November 20, 2024

The purpose of this memory segment is to reduce the load on the Shared Pool. The Large Pool is used in several operations, including th... Continue Reading

Database

Log Buffer Cache

Published by : Obay Salah , November 20, 2024

This part of memory is used to store all the changes that occur in the database. It is essentially a staging area for all the changes that have been m... Continue Reading

Database

Nonstandard Block Size Pools

Published by : Obay Salah , November 20, 2024

Oracle allows the use of Multiple Block Sizes in the database, but each block size must have a corresponding pool in the Database Buffe... Continue Reading

Database

Sizing the Database Buffer Cache

Published by : Obay Salah , November 20, 2024

Database Buffer Cache should be sufficiently large to accommodate the blocks that are frequently and repeatedly used. However, it should not be e... Continue Reading

Database

The Default, Keep, and Recycle Pools

Published by : Obay Salah , November 20, 2024

Database Buffer Cache: It can be divided into approximately three memory segments, and any segment should be placed in one part of the memory. All the... Continue Reading

Database

Database Buffer Cache

Published by : Obay Salah , November 20, 2024

The server processes create a copy of the datafile block into the database buffer cache. If the block is modified in the database buffer cache, the DB... Continue Reading