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This article is excerpted from the summary report of xuanjicang Yishi's ERP system optimization project for a listed company, hoping to help you. In a 32-bit operating system, the upper limit of memory used by the Oracle system theoretically is 4 GB,

Error | resolution Analyze and resolve ora-4030 errors What does ORA-4030 mean? This error means that the Oracle server process cannot obtain more memory from the operating system. The memory here refers to the PGA (Program Global Area) and

Oracle knowledge point summary (1) architecture: the database architecture refers to the composition, working process and principles of the database, and the organization and management mechanism of data in the database. The architecture includes:

Oracle Memory ArchitectureThe basic memory structures associated with Oracle instances include:System global Area (SGA): shared by all servers and background processes. Examples of data stored in the SGA include cached data blocks and shared SQL

=============================================================================================================== ========================Storage structure--Video 121. Data file2. Control file3. Redo log File4. parameter file5. passowrd fileQuery

The client SQL plus requests the connection, listens to the TCP connection that accepts the client, and obtains the TNS packet sent by the client. The listening process opens the pipeline used to communicate with the child process, while fork a

"In the latest release 10.2 Oracle changed these default values. The memory allocated to a single SQL operator (_ smm_max_size) is limited:For P_A_T For P_A_T between 500 MB and 1000 MB the parameter _ smm_max_size = 100 MFor P_A_T betweeen 1001 MB

ArchitectureI. Basic Components1. The Oracle Server is a database management system, including oracle instances and oracle databases ).2. An oracle routine is a database access tool consisting of a memory structure and background processes. It

1,oracle architecture, process management, and structural components in detailUser process: A process that connects to a database server through which the user interacts with the database. However, the user process cannot interact directly with the

Oracle architectures include: Instances (Instance), database files, user processes, server processes, and other files.1.ORACLE instance (instance)1). To access the database, you must first start the instance, allocate the memory area when the