Blog Blog 齋

Summary:

Although dbca (Database Configuration Assistant) in Oracle 11g allow you to enable Database Vault during database creation. It seems to missed something and leave the database barely usable. This document discusss what's wrong and how to remedy (in my case).

(閱讀全文)

Dear Oracle,

I've taken the “Oracle Database 11g: New Features for Administrators” Exam (1Z0-050) 15-Dec-2007 (Prometric confirmation number: xyz123) during beta. I've logged in Prometric and checked that the exam failed. However, I have not received any notification from Oracle about the exam result. I would expect a formal reply with breakdown on the scores in individual sections.

By the way, I must PROTEST that the exam description was incorrect, as it missed many topics which appeared in the exam (http://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=41&p_org_id=15941&lang=US&p_exam_id=1Z0_050). For example, I can't imagine Virtual Private Catalog is within the exam scope according to this page. Instead, it is taught in the “Oracle Database 11g: New Features for Administrators” course (identical name…). Does this mean that the true exam topic is described in this course page, instead of the exam page? If not, where can I find the ACTUAL exam topic list? This is unfair for us who followed the exam scope to prepare the exam.

Regards,
Fat Penguin

(閱讀全文)

今日上 Oracle 個網，發現 Oracle 11g 已經推出，可供下載。

一如過往，最先推出 Linux x86 版。好處係可以先睹為快。但行先死先，先生先死，先死先生，其他版本有更多機會捉蟲，推出時更穩定同更多功能。

仍未研究有什麼新功能，但個安裝程式就由 700MB 變為 1.7GB，容量激增 1 gig。真誇張。

PS︰正在研究單機起動 10g RAC，玩兩個 instance 同 failover，希望成功…

之前寫了篇大作《高速起動 Linux + Oracle（第一回）》，講述如何用 VMWare + Ubuntu + Oracle 10g XE 無風險在 windows 入起動 Linux + Oracle，順便講到一些 Oracle 同 Ubuntu 秘技。第二回卻只聞檈梯響，遲遲沒有推出…

事實是，已經寫了一大部分的第二回已經胎死腹中…

(閱讀全文)

This article describes the Database Duplication feature of Oracle 10g. The article will first describe the database duplication in detail. Afterwards, issues specific on Windows will be discussed and addressed.

The article is based on the following environment:

Source Database:

• Windows XP
• Oracle 10g XE
• Oracle Installation in D:\oraclexe

Destination Database:

• Windows XP
• Oracle 10g XE
• Oracle Installation in C:\oraclexe 

(閱讀全文)

這系列兩篇文章，將會介紹兩個啟動 Linux 和 Oracle 的捷徑。這兩個方法，特色如下︰

• 簡化安裝過程—對一般電腦用家來說，安裝 Linux 是一件可望而不可即的事。至於 Oracle…即使是所謂的 IT 人也望而輕嘆
• 配合 Virtualization Software（見前作），可以低風險無痛使用，不用擔心弄壞系統
• 玩玩而已，不適用於 Production 環境

廢話小說，先介紹第一炮︰用 Ubuntu + Oracle Express Edition（Oracle XE）。這篇文章中也會簡介 Ubuntu 的 Persistent 功能，讓用戶可以使用 Ubuntu 光碟啟動電腦之餘，也可輕易儲存檔案，甚至安裝和升級套件。

(閱讀全文)

Oracle Buys Enterprise Performance Management Leader Hyperion

Hyperion 係 OLAP 界龍頭大哥（唔係土星粒衛星），以產品性能同價格聞名…所謂的一分錢一分貨。

Oracle 自家的 OLAP 產品一向沒有人用，估不到今次會發憤圖強，唔大唔食。

Oracle 都算巴閉，近幾年對差不多同其業務有關的公司，可謂大小通殺。CRM/ERP 方面有 PeopleSoft 同 Siebel，Database 方面有 InnoDB、Berkeley、TimesTen。OS 方面又自已重新包裝 Redhat，自已出 linux。App Server 方面，本來想收購 JBoss，但輸左俾 Redhat