Upgrade your JDBC and JDK before Upgrade your Database to 12c Version!

Ok, now it’s everyone upgrading to 12c, right? Thanks God, this version was released in 2013!

But there is some things to be aware when planning an upgrade, specially regarding old applications and legacy. But pay attention! Not all of the requirements are necessary inside database. It’s the case os JDBC version requirement.

The database 12c documentation explicit mentions that JDBC versions 11.1.x and below are not supported anymore. It doesn’t mean that they don’t work, it’s only unsupported and you’ll have no assistance from MOS if you need. It’s better to avoid, right?

Anyway, if you check the JDBC support matrix, if you are in version 11.2 or below you are not supported since August/2015. So the Database 12c is helping you, that don’t have patching policy, to keep on right way. Thanks to Database 12c!

If this is your situation, I highly recommend you to upgrade the directly to JDBC version 7, the last available by now. See JDBC matrix version as:


But test! Test in you dev/test/QA environments before upgrading in Production environment!

Why? Because JDBC also have his compatibility matrix. JDBC 7, for example, demands your JDK to be at least in version 7 (released in 2011!). So, it’s needed to be at least in JDK version 6, as you can see below.

captura-de-tela-2016-10-22-as-16-37-18(Click in the image to access the link)

OK doke?

Some interesting links for you:
Verifying a JDBC Client Installation
What are the various supported Oracle database version vs JDBC compliant versions vs JDK version supported?
Checking the Oracle JDBC Driver Version on a Weblogic Server (by Cristóbal Soto)


ODI 10gR1: Connection to Repository Failed after Database Descriptor Change

After migrating database to another host, port or SID, the error below started to happen when running a scenario.
“Of course” all mapped connection was right setted on Topology… But environment is complex, it’s possible something is missing…

java.sql.SQLException: Io Exception: The Network Adapter could not establish the connection
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:162)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:274)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:328)
at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:361)
at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:151)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:595)
at com.sunopsis.sql.SnpsConnection.u(SnpsConnection.java)
at com.sunopsis.sql.SnpsConnection.c(SnpsConnection.java)
at com.sunopsis.sql.h.run(h.java)

Ok, so something really is missing… But where?
Try to check this:

Continue reading

Decrypting WebLogic Datasource Password

Hi Guys,

Today I bring you a script that I use to decrypt datasource passwords and also the password of AdminServer, which is very useful on a daily basis.

The script uses the encrypted password that is found within the datasource configuration files ($DOMAIN_HOME/config/jdbc/*.xml).
To decrypt the AdminServer password is used the encrypted password contained within the boot.properties ($DOMAIN_HOME/servers/AdminServer/security).

Below the script (decryptPassword.py):

# This Script decrypt WebLogic passwords
# Usage:
# wlst decryptPassword.py
import os
import weblogic.security.internal.SerializedSystemIni
import weblogic.security.internal.encryption.ClearOrEncryptedService

def decrypt(domainHomeName, encryptedPwd):
domainHomeAbsolutePath = os.path.abspath(domainHomeName)
encryptionService = weblogic.security.internal.SerializedSystemIni.getEncryptionService(domainHomeAbsolutePath)
ces = weblogic.security.internal.encryption.ClearOrEncryptedService(encryptionService)
clear = ces.decrypt(encryptedPwd)
print "RESULT:" + clear

if len(sys.argv) == 3:
decrypt(sys.argv[1], sys.argv[2])
print " Usage: java weblogic.WLST decryptPassword.py "
print " Example:"
print " java weblogic.WLST decryptPassword.py D:/Oracle/Middleware/user_projects/domains/base_domain {AES}819R5h3JUS9fAcPmF58p9Wb3swTJxFl0t8NInD/ykkE="
print "Unexpected error: ", sys.exc_info()[0]

Syntax using: java weblogic.WLST decryptPassword.py $DOMAIN_HOME encrypted_password

For example:
[oracle@app1osbgrepora1l scripts]$ source /oracle/domains/osb_domain/bin/setDomainEnv.sh
[oracle@app1osbgrepora1l osb_domain]$ java weblogic.WLST decryptPassword.py /oracle/domains/osb_domain/ {AES}WdbfYhD1EbVXmIe62hLftef4WtNPvyRDGc1/lsyQ014=
Initializing WebLogic Scripting Tool (WLST) …
Welcome to WebLogic Server Administration Scripting Shell
Type help() for help on available commands

That’s all for today