Monthly Archives: May 2015

Oracle wallet on Windows registry – share with other users

This entry was posted in Oracle Oracle 11g Security on by

I installed Oracle wallet to access passwordless to the remote databases, so I could do backups without specifying the password on any script.

The sqlnet.ora has the following information concerning the wallet:

WALLET_LOCATION =
(SOURCE =
(METHOD = reg)
(METHOD_DATA = (KEY = DEFAULT)))

SQLNET.WALLET_OVERRIDE = TRUE
SSL_CLIENT_AUTHENTICATION = FALSE

The other day, I got the need of giving access to remote databases to another windows user, so he could run a refresh schema/database script.

He was getting the following error when trying to access any database:

ORA-12578: TNS:wallet open failed

While I could just have set a different TNS_ADMIN variable pointing to a sqlnet.ora with

SQLNET.WALLET_OVERRIDE = FALSE

this was not the solution for him to use an automatic script.

The solution was to export/import the following branch of the registry from my windows user to the other windows user:

\\HKEY_CURRENT_USER\SOFTWARE\ORACLE\WALLETS

Note that these entries contain the encrypted password to the wallet, allowing the user to add/remove/modify/see the contents, including passwords, of the current wallet.

Solution for slow login after installing Oracle Linux

This entry was posted in Linux Oracle on by

After installing Oracle Linux on Virtualbox, I noticed that login in was quite slow. Between the time we enter the login and the moment it asks the password it takes a few seconds.

The solution was to disable the usage of reverse IP resolution on the ssh server.

It can be done by adding/changing the following line on /etc/ssh/sshd_config

UseDNS no

And restart the ssh deamon:

# service sshd restart
Stopping sshd:                                [ OK ]
Starting sshd:                                [ OK ]