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Oracle 12c: XQuery Full Text

New in Oracle 12c and one of the big new features in XMLDB is the XQuery Full Text functionality and, as mentioned in the post about XQuery Update, is the official W3C standard to handle unstructured pieces of XML content. The XQuery Full Text and XQuery Full Text Index extends the XQuery XMLDB language to

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Oracle 12c: XQuery Update

New, new…? No, not really new, XQuery Update (W3C standard/draft 2011) was already implemented in 11.2.0.3.0, but is now officially also announced. Besides the XQuery Full Text support (XQFT for short, W3C standard/draft 2011), this is one of the big new features in Oracle 12c. With this update XQuery functionality, the XQuery standard is further

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12c Debug

Now that 12c is out, here’s an idea that might save you some time even if you have no intention of migrating to, or even testing, the product for a couple of years. Download the “List of bugs fixed in 12c”: you may find that it’s the best starting point when you’re trying to solve a problem in your current version of Oracle.

A slightly more sophisticated version of the same thing – download and install the product, then take a dump of v$system_fix_control – that may also give you some insight into anomalies (that are not necessarily declared as bugs) in the way Oracle – and the optimizer in particular – behave. I updated the referenced note to add in a couple of figures for 12.1 – but one figure that’s not there is the number of database parameters: now at 368 (in my Beta 3 release) and 3,333 in the x$.

Index rebuild 12c

Just one of those little snippets about 12c that might help someone.

Further to an earlier post, online rebuild works in 12c even when the key is “too long”. The internal code has changed completely, and there is no sign of the problematic journal table that caused the problem in earlier versions.

My Plans for Oracle 12c RAC Thwarted…

My initial batch of 12c installations resulted in these two articles.

Judging by my web stats, they’ve proved very popular. According to Google Analytics, there are 3-4 active visitors on them pretty much 24×7.

maxthr – 2

Actually, there hasn’t been a “maxthr – 1″, I called the first part of this series“System Stats”. If you look back at it you’ll see that I set up some system statistics, excluding the maxthr and slavethr values, and described how the optimizer would calculate the cost of a serial tablescan, then I followed this up with a brief description of how the calculations changed if I hinted the optimizer into a parallel tablescan.

Oracle 12c: Database Parameters…

For those in a desperate need to learn all 3351 database parameter variations… x_ksppi.txt …if you break it, then… …please let me remind you some info mentioned on my “About”-page: The content presented has been tested as good as humanly possible. But be warned: always properly test it before you use them yourself… Applying ideas,

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Oracle 12c: Export by View

A small enhancement, but what a golden nugget! At least that’s what I think. It is now possible in Oracle 12c to export data via a view. I my realm, Oracle XMLDB, that can be an interesting feature to export stored XML content in a relational format and import it, for example, in a relational

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Oracle 12c: DB Express – Sneak Peek

The new Database Express or DB Express database utility is different from the former DB Console. It is based on flash and “built-in” the database. To give you a small overview (sneak peek) into this great new tool for, for example, database performance tuning, hereby some pictures to create some appetite. I created some have …

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Oracle 12c: Getting Started with DB Express

Oracle DB Express is the new replacement for Oracle DB Console in the Oracle 12c database. Here are some first steps to get started. Oracle DB Express makes use of what is called the “XDB Protocol Server”, which among others supports the Oracle APEX standalone PL/SQL Gateway. For people who are unknown still how to …

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