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Simplifying the client install
Our application server estate has huge mix of oracle client installs from 9 all the way to 12. These are all manually installed in varying locations and with differing types of components and...
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More datapump master table analysis
We're currently looking at migrating an old 9i system to 12c (via 10g) and the datapump part is taking longer than we'd like. I'm doing a bit of analysis to see where the time is spent and have built a...
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When a 12c upgrade unexpectedly breaks something - beware 9i!
The 12c upgrades continue to rumble on - this week we upgraded our cloud control repository (Oracle finally added support to be able to do this) - this all went fine however a couple of days later we...
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RMAN exclude
A couple of weeks ago i blogged about moving a large old 10g database to a new disk array, this process is continuing across all of our servers and this week i had to move another 10g one (although for...
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12c subtle backup view differences
After our recent spate of 12c upgrades i was reviewing a couple of monitoring jobs we had setup and discovered a problem with our cloud control metric extension to check how long it has been since the...
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The battle of Thermopylae (well rman and flashback anyway)
This is a very badly named post (it's a vague reference to the fact that this is my 300th blog post and it's come about as i have being having a major battle with trying to do a restore this past...
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Cloud control and the SLES problem
As some of you may have read I've been investing some time in making use of cloud control as a CMDB (or something CMDB like at least) - everyone has a CMDB right.....?Well anyway we have been arranging...
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The triangle of doom
Occasionally when you look at the performance screen in cloud control you get a surprise - but i wonder how many of you have seen a screen like this.....Pretty daunting...Clicking on the concurrency...
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12c dataguard issue follow up
I posted a couple of months ago about an issue i was having with 12c dataguard not working as i expected - see hereI then found my own workaround for it - see hereHowever the original ticket i raised...
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Is it possible to cause tables to be stale with only tiny amounts of change?
I don't really like posting blog entries about Oracle statistics as so many other people do it better than i ever could (Jonathan, Randolf etc) - well that and i'm likely to get it wrong...However i've...
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When FRA maths goes wrong
Stop press - I'm now on twitter thanks to peer group pressure (Tim and Chris you know who you are) so I'll hopefully be tweeting all my blog entries from now on (as long as i remember to do...
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Wait event bingo
How this for a random selection of wait events, some of these i never even heard of beforeWhat seemed to have happened is that something had died and smon had decided to do parallel transaction...
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cloud control art?
I'm thinking of starting a gallery for cloud control images - here is the first painting in as you walk through the doorI call this "tidal wave hits redwood shores"Other submissions gratefully received
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Partitioning to the rescue
One of our core 3rd party applications has some functionality where results of certain calculations are extracted once per day into customer defined tables for use by downstream systems and interfaces....
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Database migration with datapump 10g->12c
Finally one of our 'legacy' systems is being brought up to date after many years of languishing on oracle 9. We're so far behind that a migration route is not straightforward (at least one that runs in...
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Do you pass the AUTHID test.....?
Now I'm not sure whether i already knew this and had just forgotten or whether i had genuinely missed this little 'feature' but it's useful to know this exists even if it's just so you don't look...
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Startup quirks with depracated parameters
I noticed a little quirk today in 12c when starting a database with an explicit pfile vs with an implicit spfile/pfile (actually there is no way to explicitly point at an spfile from a startup command...
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The datapump detective...
As some of you may have read we're migrating an old 9i system to 12c and are having to make use of streams to make up for the fact that CDC has been removed in 12c. This had all been going well and we...
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Features that time forgot
I saw there was a new feature when looking at Neil's blog earlier today which is quite nice (only from 12.1.0.2)https://chandlerdba.wordpress.com/2015/07/14/locking-privileges-in-oracle/It's been...
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Function tuning with dual
Yesterday i had an email from a developer asking me this:"We're running an extract report and when we run it in plsql developer we get rows back immediately, however when we do a full extract of the...
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