Script to Identify and Resolve Blocking Sessions in Oracle Databases

advertisements

_____________________________________________________________________________________________________________________

Description: This article focuses on understanding and addressing blocking sessions in Oracle databases. We explore the impact of blocking sessions on database performance and discuss techniques for identifying and resolving these issues. By analyzing blocking session details, including blocking session ID, session ID, serial number, username, SQL ID, and the event causing the blocking, DBAs can effectively manage and mitigate blocking scenarios.

SELECT blocking_session, sid, serial#, username, sql_id, event

FROM v$session

WHERE blocking_session IS NOT NULL;

BLOCKING_SESSION    SID    SERIAL#    USERNAME    SQL_ID        EVENT

--------------------------------------------------------------------

789                 123    11111      USER1       abcd1234      enq: TX - row lock contention

...

_____________________________________________________________________________________________________________________

Website Stats