View Data Volume Estimates

When the optimizer has to estimate the data volume (the BYTES column in the plan output), it usually bases this information on the column statistics, if applicable and available (think of complex expressions).However, whenever there is a VIEW operator in an execution plan, that represents an unmerged view, the optimizer obviously "loses" this information and starts applying defaults that are based on the column definition.Depending on the actual content of the columns (more...)

UNTIL CANCEL UNTIL CANCEL UNTIL CANCEL

Yesterday I was creating a new Oracle 11.2.0.3 database from a copy of datafiles and archivelogs taken from our standby. I was sure to include archivelogs from just prior to well after the span of the datafile backup time. I had created a new controlfile, gotten everything (more...)

Decrypt Oracle 11.2.0.3 and 12.1.0.1 database link passwords

At Derbycon 3.0, László Tóth and Ferenc Spala  gave a a new presentation “What’s common in Oracle and Samsung? They tried to think differently… ” (Video). The main focus of the presentation was the Samsung encryption and a new framework called sandy but there was also a small (more...)

BI Mobile HD App 11.1.1.7

Finally got around to writing my long overdue post on the new BI Mobile HD app. To get on with it, without much ado, not to loiter, and all that... here goes.

The new BI Mobile HD app, version 11.1.1.7.0.2094, can be downloaded from (more...)

Creating your first app with the BI Mobile App Designer

While creating sophisticated mobile apps that provide a rich feature set takes time, expectedly, what is wonderful about the recently launched Oracle Business Intelligence Mobile App Designer is the fact that you can be up and running without requiring a week-long training and a Master's degree in Computer Engineering.

Here's (more...)

Introduction to the BI Mobile App Designer

Oracle launched a brand new addition to its Business Intelligence Mobile solution - BI Mobile App Designer, which lets you create stunning, interactive mobile apps, literally within minutes. Apps created run on mobile devices running a reasonably modern mobile browser - that can handle HTML5 and jQuery - and are (more...)

White spaces and Map Views

When working with Map Views, you can choose to collapse the map formats panel on the left.

When you do that, the panel is hidden, but white space is displayed on either side of the map view, where the panel used to be.

Currently there is no option to remove (more...)

Fix for oradebug disable auditing available (11.2.0.3/11.2.0.4/12.1.0.1)

2 days ago I gave a presentation “Oracle 12c from the attackers perspective” at the DOAG SIG Security. I learned some interesting things, especially that a fix for the Oracle oradebug “disable auditing” problem is available since 9 months.

Oradebug allows to run OS commands and to enable/disable Oracle SYSDBA (more...)

Have released PMD Jdeveloper Extension 5.0.5

I have finished now my work on integrating last PMD version 5.0.5 into JDeveloper.

This is available now for JDeveloper 11.1.1.6 upwards, 11.1.2.x. and 12.1.2. There is no new functionality, as the most work intensive part was the rewriting for (more...)

Failed Logins can cause row cache lock on dc_users

One “feature” to be aware of in old-fashioned Oracle 11g – took me a while to figure it out, so just in case anyone else gets hit by it…

I changed the password of a schema in a test database to stop anything connecting whilst that schema was being logically (more...)

Automatically purging OMS log and trace files in EM12c

Enterprise Manager Oracle Management Server (OMS) installations generate huge amounts of log and trace files under the covers these days, and although the logs are rotated out-of-the-box, they’re not automatically deleted.  Over time (as I was reminded again today ), these logs can amount to a large portion of your (more...)

Write ADF static code analysis rules with PMD and running these in JDeveloper

Do you know, that PMD can analyse XML files since version 5? Many of ADF files are XML configuration files – wouldn’t it be a good idea to create some static code analysis rules for ADF too?

Unfortunatly oracle configuration files in most times create references to dtd’s, which are (more...)

PMD Integration with JDeveloper through Ant External Tools

In the past I read following blogs from Shay Shmeltzer:

Now (after little code change in pmd) this integration is possible. I use here JDeveloper 11.2.0.4, with other versions this should be very similar. Now let’s (more...)

TIMESTAMP WITH TIME ZONE Aggregation

The TIMESTAMP WITH TIME ZONE data type that got introduced a long time ago is known for some oddities, for example Tony Hasler has a nice summary of some of them here.Here is another oddity that shows up when trying to aggregate on such a data type. Have a look at the following simple example:

create table t
as
select
rownum as id
, date '2000-01-01' + rownum - 1 as some_date
, cast(date (more...)

portmap: unrecognized service on RHEL6

Original Post can be viewed at portmap: unrecognized service on RHEL6

Quick note for people using NFS for shared storage on RAC database. Till RHEL5 we had to ensure nfs,nfslock and portmap service has to be running. These services are required otherwise you will get following errors while mounting database

(more...)

New Version Of XPLAN_ASH Tool – Video Tutorial

A new major release (version 3.0) of my XPLAN_ASH tool is available for download.

You can download the latest version here.

In addition to many changes to the way the information is presented and many other smaller changes to functionality there is one major new feature: XPLAN_ASH now also supports S-ASH, the free ASH implementation.

If you run XPLAN_ASH in a S-ASH repository owner schema, it will automatically detect that and adjust accordingly.

(more...)

Oracle BI Apps 11.1.1.7.1 Available

The latest version of Oracle Business Intelligence Applications, version 11.1.1.7.1, became available for download on the Oracle Technology Network.

You can download the software here.
The documentation library can be accessed here.

Some of the highlights of this release of Oracle BI Apps are:

11.1.1.6.10 Bundle Patch for OBIEE Now Available

Earlier in the week the latest bundle patch for Oracle Business Intelligence Enterprise Edition - 11.1.1.6.10 - became available to Oracle customers on the My Oracle Support portal. "This patchset is available for all customers who are using Oracle Business Intelligence Enterprise Edition 11.1. (more...)

cursor: pin S wait on X

Original Post can be viewed at cursor: pin S wait on X

Few weeks back thread came up on oracle-l freelist regarding ”cursor: pin S wait on X” event . Tanel Poder replied to this thread with excellent explanation. You can read full thread here

 

This wait happens when your (more...)

Oracle Database Gateways 11g R2 (11.2) Installation and Configuration for heterogeneous connection from Oracle to Microsoft SQL database

Installation

Install the Oracle Database Gateways 11g R2 (11.2). See the screen snapshots of the installation here.

Configuration

  • During the installation, the following default initialization parameter file is created:
[ORACLE_DG_HOME]\dg4msql\admin\initdg4msql.ora
dg4msql = Database gateway for Microsoft SQL Server. 
If you choose a different database option,  (more...)