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Monitoring rollback progress

(QIANGHUA MA) When a large transaction takes a long time to rollback, it is good to know how much of the rollback is done and estimate how long it is going to take. Given the session’s sid, it can be done with the simple statement below, tested on Oracle9i. When a transaction is rolling back, the t.

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Building an Image Keyword System

(Ziran Sun) Unlike text-based file formats (HTML, XML, plain text and even PDF and MS Word documents), image files aren’t made up of text. This makes searching for an image file by keyword difficult. Instead of being able to simply open the file to see what words it contains, we’re stuck looking at

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The More Things Change

(Micah Dubinko) A lot of staying on top of XML is just keeping up with two kinds of things: those that change, and those that stay the same. Plenty of both can be found on the xml-dev mailing list and other discussions within the community. This week, XML-Deviant takes a retrospective look back as f

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Transparent Data Encryption

(Arup Nanda) It’s your organization’s worst nightmare: Someone has stolen backup tapes of your database. Sure, you built a secure system, encrypted the most sensitive assets, and built a firewall around the database servers. But the thief took the easy approach: He took the backup tapes, ostensibly