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Topic: Linux

The new items published under this topic are as follows.

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How to Enable or Disable Restricted Access SQLnet Client to Oracle DB Server

Posted by: admin on Wednesday, September 02, 2009 - 07:33 PM
Linux 
For ENABLE restricted access :

Edit the sqlnet.ora file in $ORACLE_HOME/network/admin/ :
change "tcp.validnode_checking = yes" and "tcp.invited_nodes=(myhost,172.16.3.251)"
only "myhost" and host with ip "172.16.3.251" can connect to database.

this the content of sqlnet.ora file :
...
NAMES.DIRECTORY_PATH=(TNSNAMES, ONAMES, HOSTNAME)
SQLNET.EXPIRE_TIME= 10
tcp.validnode_checking = yes
tcp.invited_nodes=(myhost,172.16.3.251)
...

For DISABLE restricted access :

change "tcp.validnode_checking = no"
so, every client can connect to database.

this the content of sqlnet.ora file :
...
NAMES.DIRECTORY_PATH=(TNSNAMES, ONAMES, HOSTNAME)
SQLNET.EXPIRE_TIME= 10
tcp.validnode_checking = no
tcp.invited_nodes=(myhost,172.16.3.251)
...

You must restart the oracle listener to activated that new setting above, with the following command :
lsnrctl stop
lsnrctl start

---
Dedi




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Install Oracle Instant Client 11.1 and cx_Oracle 4.4 on Ubuntu 9.04

Posted by: admin on Saturday, July 25, 2009 - 08:12 AM
Linux 
Purpose

I'm working on building a python app that needs to connect to an existing Oracle Database. The server it will be deployed on is Ubuntu 9.04 Server - 32 bit. No gui is installed. When I started down the road of installing Oracle Instant Client and cx_Oracle, I ran into several problems. I was able to find bits and pieces on the web that helped me along, but I did not find an all in one document. I'm sure there are some out there, but my Google-fu failed me.





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Oracle Applications (11.5.10.2) Installation on Oracle Enterprise Linux 4.5

Posted by: admin on Monday, July 06, 2009 - 08:33 PM
Linux 
Oracle Applications (11.5.10.2) Installation on Oracle Enterprise Linux 4.5 This article is intended as a brief guide to installing Oracle Applications (11.5.10.2) on Oracle Enterprise Linux 4.5. The article is based on a server installation with a minimum of 2G swap, secure Linux disabled and the following package groups installed:
  • X Window System
  • GNOME Desktop Environment
  • Editors
  • Graphical Internet
  • Server Configuration Tools
  • Development Tools
  • Administration Tools
  • System Tools




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DBLink Oracle 9i to 10g r2 Error

Posted by: admin on Thursday, June 11, 2009 - 03:36 AM
Linux 
ORA-02068: following severe error from DBLINK
ORA-03113: end-of-file on communication channel
ORA-02068: following severe error from DBLINK
ORA-00603: ORACLE server session terminated by fatal error
ORA-00604: error occurred at recursive SQL level 52
ORA-00036: maximum number of recursive SQL levels (50) exceeded
ORA-00604: error occurred at recursive SQL level 52
ORA-00036: maximum number of recursive SQL levels (50) exceeded




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ESC Key Button on Pocket PC / WM / WinCE

Posted by: admin on Saturday, May 30, 2009 - 06:44 AM
Linux 
ESC key button = CTRL + [



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ocfs2console fails to add node: o2cb_ctl: Unable to access cluster service

Posted by: admin on Thursday, April 30, 2009 - 12:47 AM
Linux 
OCFS2: ocfs2console fails to add node: "o2cb_ctl: Unable to access cluster service while creating node"




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Virtual IP / VLAN

Posted by: admin on Monday, April 06, 2009 - 10:02 PM
Linux 
Howto: Configure Linux Virtual Local Area Network (VLAN)



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Error listening on: (ADDRESS=(PROTOCOL=ipc)(PARTIAL=yes)(QUEUESIZE=1))

Posted by: admin on Thursday, March 19, 2009 - 04:57 PM
Linux 
Oracle Database 10g R2 on Ubuntu/Debian Linux

Error listening on: (ADDRESS=(PROTOCOL=ipc)(PARTIAL=yes)(QUEUESIZE=1))
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=dbserver)(PORT=1521)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 2: No such file or directory



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Configuring Serial Ports for Linux

Posted by: admin on Monday, March 02, 2009 - 08:56 AM
Linux 

In order to configure serial ports for Linux, you will need to make use of the setserial command.
Firstly, you will need to know the card's base address and and which IRQ it is using.

For an ISA card, this can be read off the jumpers on the card.





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Check Harddisk Mirror Synchronization Process in Solaris 10

Posted by: admin on Saturday, February 28, 2009 - 06:07 PM
Linux 
metastat | grep done

If the output is blank, that's mean the process synchronization is done.





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