ORACLE ASMCA Command Failed To Access On AIX 7.2
Based on the information provided, I confirmed that an unhandled exception error message occurred when executing the asmca command on the AIX operating system. This...
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An In-Depth Guide to Oracle Background Processes: The Roles and Synergy of DBWn, LGWR, SMON, and PMON
This article demystifies Oracle's core background processes. From the perspective of a seasoned DBA, we will explore the distinct roles of DBWn, LGWR, SMON, and...
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ORACLE 12c and 19c Coexistence System, DBCA Reports Error
The current system is a coexistence system of 12c and 19c. The cluster is 19C, DBs are 19c+12c. The software is under different users: 19c...
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Demystifying Oracle Memory Management: A Practical Guide to Optimizing SGA and PGA
This article tackles a core pain point for many DBAs: the confusion surrounding SGA and PGA tuning, which often leads to wasted resources or critical...
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ADG SWITCHOVER Switching to New Standby Reports Password File Mismatch
After the original primary issued alter database switchover to escfsdb;, the new primary started normally. The new standby (original primary) started MRP and reported the...
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A Deep Dive into Oracle Database Architecture: The Secrets of Instance and Database Interaction
This article aims to thoroughly clarify the two most core and easily confused concepts in Oracle: Instance and Database. Using vivid analogies and practical examples,...
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Alert Log of the Primary Database Shows Error 16063
Every day from 1:00 AM to 3:00 AM, the primary database's alert log reports the following messages. The synchronization between the primary and standby databases...
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Mastering Oracle GoldenGate OBEY Files: Building Modular and Maintainable Data Synchronization Configurations
This article tackles a core pain point in OGG management: monolithic and unmaintainable parameter files. We will delve into OBEY files, a powerful feature for...
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Oracle SQL Execution Plans: A Deep Dive from Estimation to Real-World Application
Confusing estimated vs. actual execution plans often leads to failed tuning. This guide systematically breaks down the methods for obtaining Oracle SQL execution plans, from...
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