ALTER TABLE ADD column with DEFAULT value and Virtual Private Database

I recently came over a real strange behaviour with ALTER TABLE ADD column with DEFAULT value on one of my customers.

They are using a Software Product based on WebLogic and Oracle Database, from time to time we receive some new version of this Software Product which includes Database related changes, e.g. add new tables, add columns to an existing table and so on.

Within the latest Software Update, we could observe that the (more...)

Oracle 18c Certification for Fusion Middleware 12c Release 2

Since a few days the Certification Matrix for Oracle Fusion Middleware 12c Release 2 (12.2.1.x) was updated within Oracle Technology Network, now Oracle 18c (18.1 on Exadata and 18.3 on On-Premise) is certified and supported as Target Database for RCU (Repository Creation Utility and as Application Datasource.

Certification Matrix for Fusion Middleware

Certification Matrix for Fusion Middleware (more...)

Installation of Oracle 18c (18.3) RPM manually

Since last night the RPM version of Oracle 18c (18.3) is available, see my blog post

I was directly testing the manually way in installing the Oracle 18c (18.3) RPM version, not Unbreakable Linux Network (ULN).

As pre requirement you will need an up and running Linux Server, in my case an Oracle Enterprise Linux 7.4, and the Oracle 18c RPM and as well the Oracle 18c Preinstallation (more...)

Oracle 18c RPM for Linux available

Since last night, the RPM for Oracle Database 18c (18.3) for Linux x86-64 is available for download in Oracle Technology Network

The RPM can be downloaded under following link:

The corresponding documentation can be found under:

Java 11 General Availability

Right on time as scheduled Java 11 has become General Availability. This is the first Java Release under the new license with the so called Long Term Support (LTS).

The latest Java SE 11 (LTS) can be found under

But before using this release in productive environments, just make sure that you really meet the new license or consult your Oracle Sales ;-)

Documentation for Oracle Enterprise Manager 13c Release 3 ( available

Since a few days the latest Release of Oracle Enterprise Manager 13c Release 3 ( is available for download (see my blogpost "Oracle Enterprise Manager 13c Release 3 ( available" ) but the corresponding documentation was not yet available.

But now Oracle also uploaded the documentation for Oracle Enterprise Manager 13c Release 3 (, which can be found under

Under the (more...)

Oracle Enterprise Manager 13c Release 3 ( available

The lastest Release of Oracle Enterprise Manager 13c Release 3 ( is available for download under Oracle Technology Network:

The Oracle Enterprise Manager 13c Release 3 ( is available for following Operating Systems:

  • Linux x86-64 (64-bit)
  • Windows x86-64 (64-bit)
  • Solaris Operating System (SPARC)
  • Solaris Operating System (x86-64)
  • IBM AIX on POWER Systems (64-bit)
  • HP-UX Itanium (64-bit)
Unfortunately the Documentation for Oracle Enterprise Manager 13c Release (more...)

Oracle Forms and FRM- 93552 on Windows

I recently had a project for installing and configure Oracle Forms & Reports on a Windows 2016 Server. While the installation and configuration of Oracle Forms & Reports went really smooth, I was hitting directly after using the Oracle provided Test Forms under http://:/forms/frmservlet the FRM-93552 error.

The official Oracle Documentation states that you have to install the Microsoft Visual C++ Redistributable 2012 (more...)

Oracle Reports 12c and DESTYPE=blobdestination

Last week a colleague of mine contacted me to support him for a problem to configure and use Oracle Reports 12c ( and with DESTYPE=blobdestination, which means instead of displaying a rendered Report like PDF or XLS or HTML in the Browser to store the generated Report in a LOB into an underlying table in an Oracle Database.

At first you will need to download the (more...)

Tracking applied Patches in WebLogic Server outfile

With a small trick you can track your applied patches in your Oracle Software Home on your Oracle WebLogic Server in the outfile.

Simply add -Dweblogic.log.DisplayPatchInfo=true to your already existing or create a new in your $DOMAIN_HOME/bin directory.

 # Display applied patches in WebLogic Server outfile
JAVA_OPTIONS="$JAVA_OPTIONS -Dweblogic.log.DisplayPatchInfo=true "

After that just restart your WebLogic Server and you will find in the outfile of your WebLogic Server following (more...)

Oracle SOA Suite 12c – Purge

Many people struggle with the configuration and execution of the SOA Purge functionality under Oracle SOA Suite 12c.

Oracle provided with SOA Suite 12c a nice web interface for enabling, and scheduling the AutoPurge functionality within the Enterprise Manager Fusion Middleware Control 12c.

But in case you just enable, schedule and define your retention time for the AutoPurge within this web interface nothing will be happen :-( You have to modify in addition some MBeans (more...)

Oracle 18c – SQLPlus cute Features

As I got my fingers on the latest Oracle 18c Release, I had the chance to test some cute new features within SQLPlus, which are really helpful.


The new option WINDOW for SET LINESIZE automatically adjust your linesize to your current window size.

As you can see in the below screenshot, the first select was executed without the linesize option, so you will have the usual line break in your result set. (more...)


2 years ago, I have published an article series about the undocumented feature "ALTER USER RENAME":

As I was getting access to an Oracle 18c Database, I was trying directly, if the ALTER USER RENAME still works (more...)

Oracle Traffic Director in Docker

As I am currently working a lot with Docker and I already managed to place Oracle Forms & Reports into Docker, my next goal was to use the Oracle Traffic Director as well in Docker.

Based on my blog post "How to install and configure Oracle Traffic Director 12c - fully unattended", I have converted and aligned my scripts to be used in a Docker Image.

The Oracle Traffic Director (more...)

Oracle Forms & Reports on Docker – The Concept and Technique behind

In the last days I was working on my Oracle Forms & Reports in Docker solution and I already published it via my blog and in my personal GitHub Repository.

Oracle Forms & Reports with FADS in Docker

The next release of my Oracle Forms & Reports Docker solution is now containing an option on running the Oracle Forms Application Deployment Services (FADS) within the Docker container.

The source code can be found under my personal GitHub Repository:

Feel free to get a copy and enjoy playing around with Oracle Forms Application Deployment Services (FADS) under a Docker container.

Oracle Forms & Reports in Docker

After I published yesterday my Docker solution for Oracle Forms & Reports, I received several question, if and when there will be a Docker solution for Oracle Forms & Reports

Here we go, I spent once again some time and created the necessary Docker files and uploaded them to my GitHub Repository

Now the above referenced Repository contains the necessary Docker files and (more...)

Oracle Forms & Reports in Docker

As Robert Crames and me has developed some times ago a script set to install and configure Oracle Forms & Reports completely silent and unattended, the next step was for me to port this all to Docker ;-)

Oracle has a really good GitHub Repository ( with several Oracle Products, but no Docker Image (more...)

AdminServer under WebLogic consumes more than defined -Xmx

In case you are observing that your AdminServer under Oracle WebLogic Server consumes a lot more memory than your defined -Xmx size, you may hit the Oracle Bug 25665727.

In order to valid this, you just need to perform following steps, connect to your Server on which is running your WebLogic Server with your AdminServer.

Check the current defined -Xmx size

 ps -ef | grep AdminServer
oracle 12793 12738 0 (more...)

Manually rotate WebLogic Server Logfiles

From time to time you have the requirement to rotate the WebLogic Server Logfiles manually on the fly without stopping the WebLogic Managed Servers or AdminServer, for example while you perform some load tests in order to have fresh WebLogic Server Logfiles.

Here is a small Python Script, which rotates the WebLogic Server Logfiles for a list of given Managed Servers and AdminServer.

You will need:
  • = Python Script which rotates the Logfiles
  • (more...)