March 2017

In preparation for an upcoming talk about Oracle 12.2 I am planning on getting my feet wet with the Oracle 12.2 Sharding option. It seems to be a very interesting subject to get into, but like all new subjects, they can be intimidating at first due to their complexity. So why not use the instructions someone has already written down?

Oracle has a nice series of articles about Sharding. I found the Sharding landing page in the Maximum Availability Architecture section on OTN. For the purpose of this blog post I’m intending to follow the “Oracle Sharded Database Deployment with Active Data Guard using CREATE SHARD method for On-Premises – Cookbook”, available from the aforementioned landing page.

I saw a post on RobLockards Facebook page this week where he said some people have suggested that his SQL Injection talk only shows calling a procedure from SQLCl and not a web page and he suggests that he may....[Read More]

Posted by Pete On 31/03/17 At 03:38 PM

The following question came up on the OTN database forum recently:

We have below table with columns,

Table T1
Columns:
-----------
Col_1, Col_2, Col_3, Col_4, Col_5, Col_6, Col_7, Col_8, Col_9, Col_10, Col_11, Col_12, Col_13, Col_14, Col_15

on which below indexes are created.

XXTEST_Col_1    Col_1
XXTEST_Col_2    Col_2
XXTEST_Col_3    Col_3
XXTEST_Col_5    Col_5
XXTEST_Col_6    Col_6
XXTEST_Col_7    Col_7
XXTEST_Col_8    Col_8
XXTEST_Col_8    (Col_4, Col_10, Col_11)

I have requirement to update table T1 as below and it’s taking really long. [JPL: I’m assuming that the naming of the second xxtest_col_8 index is a trivial error introduced while the OP was concealing names.)