(connormcdonald) One of the cool things in 12c is that (finally after all these years) a sequence can be assigned as the default value for a column.
Tag: Oracle
Compression — 3 : Index (Key) Compression
(Hemant K Chitale) Unlike Table Compression that uses deduplication of column values, Index Compression is based on the keys. Key Compression is also called Prefix Compression.
Displaying CPU Graphs For Different Time Ranges in Enterprise Manager
(Kellyn Pot’Vin) This question was posted in Twitter from @matvarsh30, who asked, “How can I display CPU usage over different periods of time for databases in Enterprise Manager?”
On patch name changes
(Richard Harrison) When looking for the latest PSU’s for 12.1.0.2 this week i noticed that the names have been changed (to protect the guilty…?).
Converting to Interval Paritions
(mdinh) Just a quick note to demonstrate how to convert date range partition into interval partition.
Never rely on an assumed order
(connormcdonald) We’ve (hopefully) all had it drummed into us enough times – you cannot assume the order of results from queries unless you explicitly include an ORDER BY statement.
Introducing: The Client Side Event Bus in Oracle JET for decoupled interactions across templates, view models and modules with Knockout Postbox
(Lucas Jellema) Well organized exchange of client side events has been something of a holy grail for client side web development to me. I do not like these direct interactions between components that should not even know about each other. On the other hand – earlier this week I could not find out ho
‘That Ain’t Right’
(David Fitzjarrell) Dates are, well, dates. They are not strings, they are not numbers, they are dates and to handle them properly the correct data type needs to be used.
EXCHANGE PARTITION revisited
(connormcdonald) A while back I did a blog post showing that when you have set a column to UNUSED, it still “counts” as a validation step when doing exchange partition.
PARTIAL Indexes
(Thomas Saviour) Oracle PARTIAL INDEXES – a new feature in Oracle 12c, initial impression was really good, but the implementation is quite poor. With this feature, you can define INDEXING OFF for a partition so that any index with PARTIAL clause will skip this partition while creating the index.
