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2. http://taliphakanozturk.wordpress.com Talip Hakan ÖZTÜRK 2000-2005 Azerbaycan Teknik Üniversitesi – Bilgisayar Müh. BANKASYA - Oracle DBA 10g/11g OCP Oracle Blogger http://taliphakanozturk.wordpress.com http://taliphakanozturken.wordpress.com http://taliphakanozturken.wordpress.com Oracle Forum Sorumlusu ve Editörü http://www.ceturk.com “Oracle Database 11g R2” Kitabının Yazarı

3. Session 1Session 2 10:30 UPDATE scott.emp SET sal = sal+10 WHERE ename = 'KING'; 10:32 UPDATE scott.emp SET sal = sal+20 WHERE ename = 'KING'; 10:34commit ; 10:35commit; http://taliphakanozturk.wordpress.com Read Consistency

4. Session 1Session 2 10:30 UPDATE scott.emp SET sal = 1000 WHERE ename = 'KING'; 10:32 SELECT sal FROM scott.emp WHERE ename = 'KING'; 10:35commit ; http://taliphakanozturk.wordpress.com Read Consistency

5. Session 1Session 2 10:30 UPDATE scott.emp SET sal = 1000 WHERE ename = 'KING'; 10:32 UPDATE scott.emp SET sal = 1500 WHERE ename = 'KING'; 10:34commit; 10:35commit ; http://taliphakanozturk.wordpress.com Read Consistency

6. Session 1: UPDATE scott.emp SET ename = 'KING1' WHERE ename = 'KING'; (don NOT commit) Session 2: SELECT ename FROM scott.emp WHERE ename='KING' FOR UPDATE OF ename wait 10; after 10 seconds : * ERROR at line 1: ORA-30006: resource busy; acquire with WAIT timeout expired http://taliphakanozturk.wordpress.com DML Locks

7. http://taliphakanozturk.wordpress.com Deadlocks

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9. TEŞEKKÜRLER Talip Hakan ÖZTÜRK Bilgisayar Mühendisi 10g/11g Oracle Certified Professional 10g Oracle Certified Associate Oracle Certified Expert talip_hakan_ozturk@hotmail.com http://taliphakanozturk.wordpress.com http://taliphakanozturk.wordpress.com http://taliphakanozturken.wordpress.com http://taliphakanozturken.wordpress.com