Submitted by John Watson on Fri, 2017-03-31 05:01
I am fascinated by what I call "equal SQL": statements that are equivalent, in that they deliver the same result but may have hugely different performance characteristics. Here's a little case study.
Submitted by ymusani on Fri, 2017-01-20 03:00
Row Limiting Clause for Top-N Queries in Oracle Database 12c Release 1 (12.1)
Submitted by John Watson on Tue, 2016-11-01 17:57
Just how effective is Hybrid Columnar Compression? This test shows that HCC is impressive, but that thought needs to be put into choice of compression algorithm.
Submitted by John Watson on Fri, 2016-10-21 14:54
Comparing database 12cR1 release 220.127.116.11 to 12cR2 release 18.104.22.168.3, I see these new parameters:
Submitted by John Watson on Wed, 2016-10-19 08:10
Move a table without locks and without breaking indexes. That's pretty cool.
Submitted by trantuananh24hg on Sun, 2016-10-16 23:24
- Msocial: Sparc Solaris 10
- STS_VMWare: x86_64 Solaris platform
2. Utility: RMAN
3. Task list details
3.1. On Source (MSocial)
3.1.1. Create test user schema & generate data in
sys@MSOCIAL> create user msocialtest identified by msocial
2 default tablespace users
3 temporary tablespace temp
4 quota unlimited on users
sys@MSOCIAL> grant connect, resource, create session, dba to msocialtest;
Submitted by John Watson on Fri, 2016-10-14 07:54
Developers who come to Oracle with a background in procedural languages sometimes do not understand how efficient SQL's set oriented processing can be. This little demonstration should convince them: never use PL/SQL when SQL will do.
Submitted by John Watson on Sun, 2016-10-02 02:57
We all know that using SELECT * is bad programming. One reason is that you cannot control the order in which columns are returned. Well, you can in release 12c.
Submitted by John Watson on Mon, 2016-09-12 12:02
We are all waiting for database release 12.2 - but you won't get it on your own hardware.
Submitted by dancko on Sun, 2016-09-11 09:39
In this first my blog entry I wish to post the code for send an Email message from one sender to one receiver.
The code is the follow:
v_From VARCHAR2(80) := 'sender.mail.com';
v_Recipient VARCHAR2(80) := 'receiver.mail.com';
v_Subject VARCHAR2(80) := 'test subject';
v_Mail_Host VARCHAR2(30) := 'smtp.libero.it';
crlf VARCHAR2(2) := chr(13)||chr(10);
v_Mail_Conn := utl_smtp.Open_Connection(v_Mail_Host, 25);