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VLDB Backups
One of the indications that your database classes as a VLDB is that your backups are giving you problems simply due to the size of the database. As some of you will know from previous posts of mine,...
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Partitions are Not for Performance
There is a myth that Partitions in Oracle magically aid SQL Query performance, even a general assumption that the main role of partitioning is to aid such performance. This is not so. There are...
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More on Assisting Partition Exclusion
A couple of weeks ago I posted about how you could help the oracle CBO carry out partition exclusion and thus aid performance. In essence, you have a table partitioned on ID (based on an ascending...
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Ensuring Correlated Partition Exclusion
<Previous Post…Next Pos > I’ve posted a couple of times recently about a tuning method with partition exclusion where you infer a relationship between the value you want to limit a query on and...
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Ensuring Correlated Partition Exclusion #2
<Previous Post… A few days ago {oh dear, it is now two weeks!} I showed how you could better control Correlated Partition Exclusion by creating a lookup table that showed, for each partition, the...
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DBMS SIG
I went to the DBMS SIG today {DBMS Special Interest Group meeting of the UK Oracle User Group}. Don’t worry, I am not going to run through the set of presentations and make comments on them – although...
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Saturday Philosophy – The unbelievably small world of VLDBs
Yesterday I posted about the potential for a Oracle in Science community within the UK Oracle user group {and wider for that matter, there is after all a world Oracle Life Science community but it is...
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Database Sizing – How much Disk do I need? (The Easy Way)
How much Disk do I need for my new Oracle database? Answer:- 8-10 times the volume of raw data for an OLTP system 2-4 times the raw data volume for a Data Warehouse. The bigger the database, the nearer...
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Sail Away, Sail Away, Sail Away
I’m just doing some last minute preparation for the Norwegian User Group Spring Seminar. This is quite a large conference with 5 concurrent streams and a very good line-up of presenters. You can see...
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OUGN 2012 Third Day
The last day of the three (and second on the ferry and of the conference proper) had a lot of talks I wanted to see, especially Dan Morgan talking about “Insanely large Databases”. It was a good talk,...
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