Database Tuning (MOSC)

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blocking sessions keeps on coming

edited Sep 14, 2017 5:00AM in Database Tuning (MOSC) 14 commentsAnswered

Hello,

In one of our oracle database version 11g, there are blocking sessions most of them by only one user.

every time user complain and we check we will see about 180-200 blocking sessions and if we kill some sessions and new sessions again keep on coming.

may i know what will be reason behind it ?

i tried flushing that sql_id from shared pool but no luck.

i killed some sessions and again new sessions coming on.

we using alter system kill session '2545,26981,@1' immediate; syntax like this. 

its 11g rac database and 2 node.

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