Microsoft® SQL Server® 2012 Bible

1067 Chapter 47: Managing Transactions, Locking, and Blocking 47 For best performance, the SQL Server lock manager tries to bala ...

1068 Part VIII: Performance Tuning and Optimization Exclusive Lock (X) An exclusive lock means that the transaction is performin ...

1069 Chapter 47: Managing Transactions, Locking, and Blocking 47 transaction can grab a shared lock. The intent exclusive lock i ...

1070 Part VIII: Performance Tuning and Optimization Disabling page level locks is useful for a couple of specifi c purposes. If ...

1071 Chapter 47: Managing Transactions, Locking, and Blocking 47 SQL Server 2005 introduced two additional row versioning ”SQL S ...

1072 Part VIII: Performance Tuning and Optimization Internally, SQL Server uses locks for isolation (locks are still used in sna ...

1073 Chapter 47: Managing Transactions, Locking, and Blocking 47 Alternatively, the transaction isolation level for a single DML ...

1074 Part VIII: Performance Tuning and Optimization BEGIN TRANSACTION UPDATE HumanResources.Department SET Name = 'Transaction F ...

1075 Chapter 47: Managing Transactions, Locking, and Blocking 47 concurrency. That being said, the read committed isolation leve ...

1076 Part VIII: Performance Tuning and Optimization USE AdventureWorks2012 SET TRANSACTION ISOLATION LEVEL READ COMMITTED BEGIN ...

1077 Chapter 47: Managing Transactions, Locking, and Blocking 47 REPEATABLE READ BEGIN TRANSACTION; SELECT Name FROM HumanResour ...

1078 Part VIII: Performance Tuning and Optimization Best Practice Repeatable read has a signifi cant concurrency overhead, but i ...

1079 Chapter 47: Managing Transactions, Locking, and Blocking 47 Keep a Copy of Your AdventureWorks2012 Database Many of the sam ...

1080 Part VIII: Performance Tuning and Optimization DeptID Name ------ ---- 1 Engineering 16 Executive 14 Facilities and Mainten ...

1081 Chapter 47: Managing Transactions, Locking, and Blocking 47 -- Transaction 1 -- Insert a row in the range INSERT HumanResou ...

1082 Part VIII: Performance Tuning and Optimization Result: DeptID Name ---------- --------------------- 18 ABC Dept 1 ABC Test ...

1083 Chapter 47: Managing Transactions, Locking, and Blocking 47 Best Practice Oracle’s default transaction behavior is just lik ...

1084 Part VIII: Performance Tuning and Optimization Transaction 1 now begins a reading transaction, leaving the transaction open ...

1085 Chapter 47: Managing Transactions, Locking, and Blocking 47 Result: LastName -------- Sánchez Opening up a third or fourth ...

1086 Part VIII: Performance Tuning and Optimization TABLE 47-5 Locking Hints Locking Hint Description ReadUnCommitted Isolation ...