Answer / Chandra Dev Pankaj

In PL/SQL, you can implement database locks to prevent concurrent access and modifications to shared data. This is typically done using the DBMS_LOCK package. Here's an example of how to acquire a row lock for a specific record in a table:

BEGIN
dbms_lock.request(type => dbms_lock.row_lock, name => 'MY_LOCK', mode => dbms_lock.exclusive);
SELECT * FROM MY_TABLE WHERE ROWID = :myRowId FOR UPDATE; -- modify the data here
COMMIT;
dbms_lock.release(name => 'MY_LOCK');
END;

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