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QlikView Tips & Tricks – part II

In a previous blog entry, I started to share some Tips & Tricks about the installation and configuration of some QlikView components/software. I will try to complete this list with some other interesting things(…)

SQL Server: Change Data Capture for Oracle

This new feature has been introduced in SQL Server 2012 and needs an Enterprise Edition. It uses a Windows Service which scans Oracle Logs and tracks DML changes from Oracle tables into SQL Server change tables. In other words,(…)

A funny story with recompile hint at statement level

Last night, I had an interesting discussion with one of my MVP French friend that faces a weird situation where a query that uses a statement level RECOMPILE hint produces an execution plan that disappointed him. He told me we(…)

Use a wallet to encrypt Oracle client passwords

In our more and more connected world, security is a big concern. Storing password is a very important topic because if a machine is compromised, we can assume that any password stored in clear text are also compromised. I had(…)

12c: shutdown abort a PDB?

By Franck Pachot . Can we shutdown abort a PDB? Let’s try: SQL> show con_id CON_ID ------------------------------ 3SQL> shutdown abort; Pluggable Database closed. But is it really a shutdown abort? The shutdown abort we know in non-CDB – or(…)

Index on trunc(date) – do you still need old index?

By Franck Pachot . Sometimes we have to index on ( trunc(date) ) because a SQL statement uses predicate on it instead of giving a range from midnight to midnight. When you do that you probably keep the index(…)

ODA 12.1.X.X.X – add a multiplexed control file under ACFS

Since version 12, ODA stores databases on ACFS volumes instead of ASM directly. This slightly changed the way the files are managed and administer. This articles presents how to multiplex your control files on ACFS. At first database creation, ODA(…)

Venturing into bulk insert a SQL Server error log and data order

Have you ever attempted to bulk import a SQL Server error log in order to use the information inside a report for example? If yes, you have probably wondered how to keep data in the correct order in a query(…)

Analyzing easily the blocked process report

Which DBA has not yet face a performance problem issued by several blocked processes? In reality, I’m sure a very little number of them. Troubleshooting a blocked issue scenario is not always easy and may require to use some useful(…)

Oracle compression, availability and licensing

By Franck Pachot . Various methods of table compression have been introduced at each release. Some require a specific storage system Some requires specific options. Some are only for static data. And it’s not always very clear for the(…)