Tag: Oracle

Review: Building High-Performance Drivers for Oracle Database 11g

This paper goes over what needs to be done to use OCI effectively, especially in a web environment. The step-by-step approach taken in this document is very readable and the well explained code snippets make it a very good reference — great for comparing your code to the “proper” way to do it.

Read More >

Oracle’s Quarterly Critical Patch Update is Out

The latest quarterly update came out this morning. There are oh-my-god smoking guns this time, but several medium-important patches. If you’re running Oracle Collaboration Suite, note that the patch blows away the login and logout pages (oops!). MetaLink note 445172.1 has info on how to restore the pages post-patch.

Read More >

SQL BackTrack and Flash Recovery Area

There is a bug in SQL BackTrack (at least in version 6.8) that prevents your backing up of the archive logs from the flash recovery area. This will result in the inability to recover from any online backups that you have taken if you somehow lose those archive logs. There are 2 workarounds to this issue that I have tested, have a look.

Read More >

Oracle R12 Certified for Linux 64-bit on the x86_64 Platform

If you are a early adopter of R12 with a version earlier than 12.0.3, its time to patch up to 12.0.3 or 12.0.4. and migrate to the Linux 64-bit platform. This migration to Linux 64-bit should not be a big hassle, as it is binary-compatible with Linux 32-bit. I expect it be as simple as 1) copy, 2) relink, and 3) startup. I will, however, find out the exact method, and post here in the blog.

Read More >

Oracle Silent Mode, Part 6: Removing a Node From a 10.2 RAC

This sixth post describes how to remove a node from a 10.2 RAC cluster in silent mode. It differs from the associated documentation in that it will show how to remove a node, even if it has been made unavailable for any reason, including an error by a DBA or a SA.

Read More >

ORA-01450 During Online Index Rebuild

We hit an ORA-01450 error today trying to do online rebuild for an index in an unusable state. This was a non-unique index on a fairly large column — VARCHAR2(800 CHAR). It rang a bell. I remembered that I encountered this issue a while ago, but I couldn’t recall the details. I know that it has nothing to do with the actual data size — it’s an error that can occur during index creation.

Read More >

Log Buffer #104: A Carnival of the Vanities for DBAs

Andrew Clarke has published to 104th edition of Log Buffer, the weekly review of database blogs, on Radio Free Tooting, marking LB’s second year. Happy Birthday, LB!

Read More >

Oracle 11g — Audit Enabled by Default, But What About Purging?

During my presentation at the TOUG meeting, I mentioned that when using 11g’s enhanced security settings or, at least, the audit setting, you risk the unlimited growth of the SYSTEM. Mohamed El-Shafie from Oracle quickly noticed that there is no auto-purge. I promised to have another look at the maintenance tasks in 11g to confirm that, and indeed, the audit trail is not purged automatically when auditing is enabled by default. Here is a quick remedy — scheduling an audit trail maintenance job.

Read More >

dbWatch News

Seems I have turned into a bit of a news source. dbWatch Software sent me a news release on their dbWatch monitoring platform, which looks like it might be an interesting product for those who work in a heterogeneous database environment. Here’s the release.

Read More >

Tuning ‘log file sync’ Event Waits

In this blog entry, I will discuss strategies and techniques to resolve ‘log file sync’ waits. This entry is intended to show an approach based upon scientific principles, not necessarily a step-by-step guide. Let’s understand how LGWR is inherent in implementing the commit mechanism first.

Read More >
Page 103 of 143« First Page...10...101102103104105...110...Last Page »