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发布时间:2010-01-15 15:04:18

Purpose: This bulletin focuses on latches. It attempts to give a clear understanding of how latches are implemented in the Oracle RDBMS and what causes latch contention. The information provided can be used in tuning the various kinds of latches discussed. Contents: 1. What is a Latch? 2. Latches vs Enqueues 3. When do we need to obtain a latch? 4. Latches request modes? 5. What c......【阅读全文】

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发布时间:2010-01-14 16:05:26

PURPOSE-------This document shows the usage, benefit sand limitations for an Oracle 9i/10gDataGuard Configuration with Standby Redo Logs.SCOPE & APPLICATION-------------------All DBA's and Interested persons who wish to implement DataGuard inOracle 9i/10g (9.x-10.x).1. Standby Redo Logs - what are they and when to use them ??-------------------------------------------------------------Starting Oracle 9i you have to opportunity to add Standby Rodo Log Groups toyour Online Redo Log Groups. The......【阅读全文】

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发布时间:2010-01-14 15:39:30

PURPOSE-------This document has been created with step-by-step instructions on how to create a Data Guard Physical Standby environment, derived from the 10G documentation. Although, this setup was tested with Linux, the procedure would be the same for any flavor of Unix.Note: For 10gr2 please refer:Note 343424.1 Creating a 10gr2 Data Guard Physical Standby database with Real-Time apply Creating a Physical Data Guard scenario in 10G on Linux.=========================================......【阅读全文】

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发布时间:2010-01-14 14:20:43

This is a reference note for the wait event "buffer busy waits" which includes the following subsections: Brief definition Individual wait details (eg: For waits seen in <<View:V$SESSION_WAIT>>) Systemwide wait details (eg: For waits seen in <<View:V$SYSTEM_EVENT>>) Reducing waits / wait times See Note:61998.1 for an introduction to Wait Events.Definition:Versions:7.0 - 10.2 Documentation: This wait happens when a session wants to access a database block in the ......【阅读全文】

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发布时间:2010-01-05 09:01:51

ORACLE 10安装问题:多网卡IP安装 网络检查错误可能原因:1:/etc/hosts增加2个IP的地址及主机名2:检查IP地址的子网掩码是否有错[@more@]ora......【阅读全文】

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