Port 1521 is used for ages as the default port for the Oracle listener, but while I was looking at some default port numbers on Wikipedia, I saw port 1521 is not the official listener port. 1521 is the nCube License Manager official port!
Port 2483 and 2484 are the official Oracle ports according to IANA!
ttc 2483 tcp Oracle TTC
ttc 2483 udp Oracle TTC
ttc-ssl 2484 tcp Oracle TTC SSL
ttc-ssl 2484 udp Oracle TTC SSL
According to Metalink’s document “Listening Port numbers [ID 99721.1]”, in Future releases the 1521 port may change to 2483 TCP and 2484 TCP with SSL, but this is document is written in 2008…
Edit: The metalink note has been removed…
Deleting expired objects with RMAN, resulting in an invalid response while answering ‘correctly’:
Wilt u de bovenstaande objecten verwijderen (voer JA of NEE in)? JA
"JA" is een ongeldige respons - voer opnieuw in.
Wilt u de bovenstaande objecten verwijderen (voer JA of NEE in)? j
"j" is een ongeldige respons - voer opnieuw in.
Wilt u de bovenstaande objecten verwijderen (voer JA of NEE in)? y
Het gearchiveerde log is verwijderd.
If you don’t want to use Null, Guest or External Host authentication when using VirtualBox Remote Display, one can add an extra external option called VBoxAuthSimple as explained here: http://www.virtualbox.org/manual/ch07.html#vbox-auth . You will use a separate password for connecting remotely to the VirtualBox’ Guest. This username/password will be stored in the machine’s XML settings file.
(trouble with mstsc.exe?)
I had this problem, when trying to connect with the External Authentication Method, using the Remote Display server in VirtualBox (4.1.8 and 4.2.0). When I want to connect with Microsoft’s Remote Desktop (mstsc.exe), it failed every time with “Your Remote Desktop session has ended. Your network administrator might have ended the connection (…)”.
Sometimes… as Oracle DBA you need to connect to SQL Server (with Oracle SQL Developer and jTDS plug-in installed).
When using ‘SQL Server Management Studio’, the ‘Server name’ is in the format:
This won’t work in SQL Developer:
Status : Failure -Unknown server host name 'SERVERNAME\INSTANCE'.
This can be solved using the ‘hostname’ in the next format in SQL Developer:
For me it worked :)
Wipe-out! Do you have a problem loading Google Calendar in Firefox and getting:
“The page isn’t redirecting properly“, “This problem can sometimes be caused by disabling or refusing to accept cookies.“?
I only removed one cookie for Domain ‘.www.google.com‘ and Path ‘/calendar/‘ and problem was solved!
The dot prefixing the ‘www’ is causing the problem I think.
Today I ran into an add-on for FireFox which can create a wget command from a download file dialog box. First thing that came in mind was; Will this work for Metalink / My Oracle Support? Yes is does!
The add-on is called ‘cliget’ and can be downloaded here: cliget add-on for FireFox. Continue reading
[Commands used were against VirtualBox version 4…]
Sometimes you don’t want to use a lot of disk space on your VirtualBox for install software or any ‘temporary’ need of space.
Adding shared folders from your host to your VirtualBox guest is a good option to use. If you have a Windows guest and a GUI based Host, it it’s very easy; click, click, done.
But if you are using a command line based guest and/or host, it a bit more complex. Use this post as a guideline, Linux knowledge is assumed… Continue reading
The expdp and impdp utilities are command-line driven, but when starting them from the OS-prompt, one does not notice it. When you run impdp or expdp and use ‘ctrl-c’ and you want to kill, cancel, start or resume a job, you will end up in the datapump command prompt… now what?!
All command shown here can be used with expdp and impdp datapump. Continue reading
When checking for the latest version of Wireshark, I came across their IPv4/IPv6 test page.
Of course a lot more IPv6 test pages can be found here: