Difference between wblogic versions 8 and 9

The oracle company release latest updates on weblogic server frequently.The weblogic 12c is cuurent popular version.The knowledge of difference between weblogic version 8.1 and version 9.1 is helps to understand better the current version.

8.1	9.2
1.       No lock and edit mechanism.	Lock and edit is the new feature.
2.       We have connection pools and datasources separately.	We have datasources and connection pools are inside datasources.
3.       We have exclude queues.	We have work managers
4.       All configuration information is in one config.xml	Seperate xml files for domain config and jms modules are added
5.       Persistent store is defined Under JMS	Persistent store is defined Under JDBC
6.       Side by site deployment is not possible	Side by side deployment is possible
7.       We need to delete and redeploy from admin console	We can update the application using admin console
8.       Have Multipools.	Have Multi datasources

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