SGA_TARGET与SHMMAX关系 参考原始: Relationship Between SGA_TARGET and SHMMAX (文件 ID 1527109.1) 申请: Oracle Database - Enterprise Edition - Version 10.1.0.2 to 11.2.0.3 [Release 10.1 to 11.2] Information in this document applies to any platform. 目的: 解释了參数文件里的參
oracle linux 和外部存储系统 关系 参考原始: Oracle Linux and External Storage Systems (Doc ID 753050.1) 范围: Linux OS - Version Oracle Linux 4.4 to Oracle Linux 6.0 with Unbreakable Enterprise Kernel [2.6.32] [Release OL4U4 to OL6] Linux x86-64 Linux x86 Linux Ita
一. 官网对Unique Constraints说明 http://download.oracle.com/docs/cd/E11882_01/server.112/e16508/datainte.htm#CNCPT1642 uniquekey constraint requires that every value in a column or set of columns beunique. No rows of a table may have duplicate values in a
本文转载自:http://blog.chinaunix.net/uid-25906157-id-4125916.html 作为一名FAE,才知硬件知识的匮乏.慢慢积累一点儿硬件知识吧!BUCK和LDO,这两个名词以前也都听说过很多次,但他们的原理和用途.差别什么的,一直摸不清楚.今天就来总结一下. 一 什么是BUCK? “A buck converter is a voltage step down and current step up converter.”――来自维基百科的解释.翻译成中文
LDO current regulator for power LED Challenge You've got a power LED? Great! Build a flash light! What does the spec say? "Voltage: 3.6 .. 3.8 V, power 3 W." Okay. This means that it draws some 800 mA. Three mignon cells give 4.5 V for at least
一. HugePages 说明 1.1 HugePages 介绍 HugePages is a feature integrated into the Linux kernel with release 2.6. This feature basically provides the alternative to the 4K page size (16K for IA64) providing bigger pages. 关于HugePages,有一些相关的专业术语,具体如下: (1) Pa
一.学习目标 Oracle数据库,使用OGG集成模式抽取进程启动时,如果没有配置合理的streams_pool_size参数可能会过一段时间就报错abend! 那么我们如何配置这个参数的大小?如何计算? 二.参考文档 从OGG官网检索这个DB参数,没有看到合理的建议信息! 2.1 MOS OGG-02045: Database does not have streams_pool_size initialization parameter configured. The database ini