Beginning Oracle Database 11g Administration From Novice to Professional

CHAPTER 9 TAKING CONTROL 191
SQL Developer can also be used to perform some typical database administration
tasks such as identifying and terminating blocking sessions. 1 In Figure 9-5, you can see
that session 128 has been blocked by session 125 for 2,500 seconds. In Figure 9-6, you can
see that session 125 is idle. It is waiting for a “SQL*Net message from client,” and you can
decide to terminate the session.
Figure 9-5. Identifying a blocking session by using SQL Developer
1. You cannot use Enterprise Manager to identify and terminate blocking sessions unless you have
a license for the Diagnostics Pack.