Monthly Archives: January 2015

Oracle January 2015 CPU – quick and dirty install on and 1

While one should always read the documentation accompanying the patches, the new January 2015 (and in some extend also October 2014) are more complex to install with a java and a db components.

If you are single instance database (no RAC) and either or here are the quick summary of the installation. Tested on Linux and Solaris SPARC:

Oracle – January 2015 CPU installation

Bundle – Patch 20132434

  • Patch 19769480 – Database Patch Set Update (Jan2015) –> RAC-Rolling Installable
  • Patch 19877336 – Oracle JavaVM Component Database PSU (JAN2015) –> Non RAC-Rolling Installable
export PATCH_LOC="/tmp"

1. Download + Upgrade OPatch


2. Stop database+listeners+agent

3. Apply DB PSU (19769480) but do NOT run DB PSU post install steps

unzip p2*
cd 2*
cd 19769480/
$ORACLE_HOME/OPatch/opatch apply

3. Apply OJVM PSU patch

cd ../19877336/
$ORACLE_HOME/OPatch/opatch apply

4. Restart database

5. Run post install steps

./datapatch -verbose


Oracle – January 2015 CPU installation


Bundle – Patch 20132517

  • Patch 19854503 – Database Security Patch Update (CPUJAN2015) –> RAC-Rolling Installable
  • Patch 19877440 – Oracle JavaVM Component Database PSU (JAN2015) –> Non RAC-Rolling Installable
export PATCH_LOC="/tmp"
cd 2*

1. Shutdown databases and services
2. Apply DB PSU (19854503) but do NOT run DB PSU post install steps

cd 19854503
$ORACLE_HOME/OPatch/opatch napply -skip_subset -skip_duplicate

3. Apply OJVM PSU patch

cd ../19877440/
$ORACLE_HOME/OPatch/opatch apply

4. For and run the OJVM PSU post install steps followed by the DB PSU (or equivalent) post install steps.

cd $ORACLE_HOME/sqlpatch/19877440
sqlplus / as sysdba
SQL> startup upgrade
SQL> @postinstall.sql
SQL> shutdown immediate
SQL> exit;
cd $ORACLE_HOME/rdbms/admin
$ sqlplus / as sysdba
SQL> startup
SQL> @catbundle.sql cpu apply
SQL> @utlrp.sql
SQL> exit;


Who does MobaXterm?

Since few years that intermittently I use MobaXterm for accessing remote servers. It is very well done and great replacement for Putty, with tabbed ssh interface, integrated X11 and sftp solution.

But the main reason why I don’t fully use it is because I don’t know who develops it. The website of MobaXterm just has a contact form, no address, no name.

By doing some research one can find that Mobatek is a company based in a village East of Toulouse, France. The address can be seen here and the picture of the place can be seen on google maps. It is a very simple house, not a headquarters of a company as I would expect. Searching some more we end up at this engineer, which seems to be project manager at Thales Alenia Space.

The question remains: just a hobby? a secondary employment?

When seeing a software so well made one would expect to be part of some bigger company, at least with bigger apparence.

The only thing that conforts me is that the source code of MobaXterm is available here. But someone has checked it?

Maximize wifi speed at home – get the 300Mbps (or more)!

Finally I got 300Mbps Wifi speed at home between my laptop and the router. This means a theoretical 30MB/s for file transfer with other computer or with the NAS. In reality I get 16MB/s instead of the 5 or 6MB/s I was getting before. It was not easy to understand all the components that made so difficult to get it working. Here are my collection of tips for configuring the router:

1. Use WPA2-AES encryption

This type of encryption seems to be needed to have speeds above 54Mbps. But I could not find information if you can also get higher speeds by removing any encryption. In some forums say the 802.11n specification obliges the use of WPA2-AES encryption, but here it seems to say that you can get a 5 to 10% gain by removing encryption.

2. Use 40MHz bandwidth

It means it bonds two channels of the spectrum to transmit data. I did not knew about this until I saw the option recently on the router of my new internet provider.

3. Set the router to use a channel with free adjacent channel

This was the most difficult to find out about and the reason why I was on 144Mbps for long time. As I live in city center there are more than 10 networks on the range. Also I had always read that it is good idea to choose either channel 1, 6 or 11, not to have overriding channels. It comes out that every network in range uses one of those three channels. When I moved my network from using channel 11 to use now channel 8 (plus channel 7 or 9 as adjacent channel, the configuration does not allow to choose), my connection changed from 144Mbps to 300Mbps!