Oracle DB管理内存
自动内存管理是用两个初始化参数进行配置的： MEMORY_TARGET：动态控制SGA和PGA时，Oracle总共可以使用的共享内存大小，这个参数是动态的，因此提供给Oracle的内存总量是可以动态增大，也可以动态减小的。它不能超过MEMORY_MAX_TARGET参数设置的大
自动内存管理是用两个初始化参数进行配置的：
MEMORY_TARGET：动态控制SGA和PGA时，Oracle总共可以使用的共享内存大小，这个参数是动态的，因此提供给Oracle的内存总量是可以动态增大，也可以动态减小的。它不能超过MEMORY_MAX_TARGET参数设置的大小。默认值是0。
MEMORY_MAX_TARGET：这个参数定义了MEMORY_TARGET最大可以达到而不用重启实例的值，如果没有设置MEMORY_MAX_TARGET值，默认等于MEMORY_TARGET的值。
使用动态内存管理时，SGA_TARGET和PGA_AGGREGATE_TARGET代表它们各自内存区域的最小设置，要让Oracle完全控制内存管理，这两个参数应该设置为0。
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
Large memory optimization, what should I do if the computer upgrades to 16g/32g memory speed and there is no change?
Jun 18, 2024 pm 06:51 PM
For mechanical hard drives or SATA solid-state drives, you will feel the increase in software running speed. If it is an NVME hard drive, you may not feel it. 1. Import the registry into the desktop and create a new text document, copy and paste the following content, save it as 1.reg, then right-click to merge and restart the computer. WindowsRegistryEditorVersion5.00[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager\MemoryManagement]"DisablePagingExecutive"=d
How long will Oracle database logs be kept?
May 10, 2024 am 03:27 AM
The retention period of Oracle database logs depends on the log type and configuration, including: Redo logs: determined by the maximum size configured with the "LOG_ARCHIVE_DEST" parameter. Archived redo logs: Determined by the maximum size configured by the "DB_RECOVERY_FILE_DEST_SIZE" parameter. Online redo logs: not archived, lost when the database is restarted, and the retention period is consistent with the instance running time. Audit log: Configured by the "AUDIT_TRAIL" parameter, retained for 30 days by default.
The order of the oracle database startup steps is
May 10, 2024 am 01:48 AM
The Oracle database startup sequence is: 1. Check the preconditions; 2. Start the listener; 3. Start the database instance; 4. Wait for the database to open; 5. Connect to the database; 6. Verify the database status; 7. Enable the service (if necessary ); 8. Test the connection.
Sources say Samsung Electronics and SK Hynix will commercialize stacked mobile memory after 2026
Sep 03, 2024 pm 02:15 PM
According to news from this website on September 3, Korean media etnews reported yesterday (local time) that Samsung Electronics and SK Hynix’s “HBM-like” stacked structure mobile memory products will be commercialized after 2026. Sources said that the two Korean memory giants regard stacked mobile memory as an important source of future revenue and plan to expand "HBM-like memory" to smartphones, tablets and laptops to provide power for end-side AI. According to previous reports on this site, Samsung Electronics’ product is called LPWide I/O memory, and SK Hynix calls this technology VFO. The two companies have used roughly the same technical route, which is to combine fan-out packaging and vertical channels. Samsung Electronics’ LPWide I/O memory has a bit width of 512
Kingbang launches new DDR5 8600 memory, offering CAMM2, LPCAMM2 and regular models to choose from
Jun 08, 2024 pm 01:35 PM
According to news from this site on June 7, GEIL launched its latest DDR5 solution at the 2024 Taipei International Computer Show, and provided SO-DIMM, CUDIMM, CSODIMM, CAMM2 and LPCAMM2 versions to choose from. ▲Picture source: Wccftech As shown in the picture, the CAMM2/LPCAMM2 memory exhibited by Jinbang adopts a very compact design, can provide a maximum capacity of 128GB, and a speed of up to 8533MT/s. Some of these products can even be stable on the AMDAM5 platform Overclocked to 9000MT/s without any auxiliary cooling. According to reports, Jinbang’s 2024 Polaris RGBDDR5 series memory can provide up to 8400
Oracle database server hardware configuration requirements
May 10, 2024 am 04:00 AM
Oracle database server hardware configuration requirements: Processor: multi-core, with a main frequency of at least 2.5 GHz. For large databases, 32 cores or more are recommended. Memory: At least 8GB for small databases, 16-64GB for medium sizes, up to 512GB or more for large databases or heavy workloads. Storage: SSD or NVMe disks, RAID arrays for redundancy and performance. Network: High-speed network (10GbE or higher), dedicated network card, low-latency network. Others: Stable power supply, redundant components, compatible operating system and software, heat dissipation and cooling system.
How much memory does oracle require?
May 10, 2024 am 04:12 AM
The amount of memory required by Oracle depends on database size, activity level, and required performance level: for storing data buffers, index buffers, executing SQL statements, and managing the data dictionary cache. The exact amount is affected by database size, activity level, and required performance level. Best practices include setting the appropriate SGA size, sizing SGA components, using AMM, and monitoring memory usage.
DDR5 MRDIMM and LPDDR6 CAMM memory specifications are ready for launch, JEDEC releases key technical details
Jul 23, 2024 pm 02:25 PM
According to news from this website on July 23, the JEDEC Solid State Technology Association, the microelectronics standard setter, announced on the 22nd local time that the DDR5MRDIMM and LPDDR6CAMM memory technical specifications will be officially launched soon, and introduced the key details of these two memories. The "MR" in DDR5MRDIMM stands for MultiplexedRank, which means that the memory supports two or more Ranks and can combine and transmit multiple data signals on a single channel without additional physical The connection can effectively increase the bandwidth. JEDEC has planned multiple generations of DDR5MRDIMM memory, with the goal of eventually increasing its bandwidth to 12.8Gbps, compared with the current 6.4Gbps of DDR5RDIMM memory.
