Oracle SQL Internals Handbook phần 3 ppsx

... decision. 34 Oracle SQL Internals Handbook SQL, reduce the overheads, and allow you greater flexibility in testing, manipulating and installing stored outlines. 30 Oracle SQL Internals Handbook ... Plan Stability 38 Oracle SQL Internals Handbook This is a relatively recent feature of Oracle and sets out to ensure that the same plan is always used for a pa...

Ngày tải lên: 08/08/2014, 20:21

... your SQL code. xiv Oracle SQL Internals Handbook Test Environment 31 Background 32 Original Statement 33 With Hash Join Hints 33 Oracle& apos;s Cost-based Optimizer 34 CPU Cost 34 ... Embedding SQL in Java & PL /SQL 1 43 Java vs. PL /SQL: Where Do I Put the SQL? by Dave Moore 1 43 The Power of a Package 144 The Flexibility of Java 146 Perf...

Ngày tải lên: 08/08/2014, 20:21

... CACHE_CNT PCT 150 261 38 14.55 175 85 19 22 .35 12 71 039 9 34 4762 48. 53 28 2661 1469 55.2 107 62762 36 487 58. 13 236 510 33 9 66.47 205 37 379 24981 66. 83 6 129022 9 135 9 70.8 228 71 65 ... SYS_OUTLINE_0205 031 6542 731 1 3 NO_EXPAND SYS_OUTLINE_0205 031 6542 731 1 3 ORDERED SYS_OUTLINE_0205 031 6542 731 1 3 NO_FACT(SO_DEMO) SYS_OUTLINE_0205 031 654...

Ngày tải lên: 08/08/2014, 20:21

... test (where 39 /32 is the node 1 .3. 1): select x_numer (39 ,32 )||'/'||x_denom (39 ,32 ), y_numer (39 ,32 )||'/'||y_denom (39 ,32 ) from dual 5/8 19 /32 select 5/8+19 /32 , 39 /32 from ... 27 /32 is the node 2.1.2, while 7/8 is 2.1): 56 Oracle SQL Internals Handbook select lpad(' ' ,3* depth)||name from hierarchy order by numer_left/denom...

Ngày tải lên: 08/08/2014, 20:21

... of SQL tuning, and they don't require a through understanding of the internals of Oracle SQL. Let's begin with an overview of the Oracle SQL optimizers. 74 Oracle SQL Internals Handbook ... Internals Handbook Oracle SQL Tuning Tips CHAPTER 7 SQL tuning Oracle SQL tuning is a phenomenally complex subject, and entire books have been devoted to...

Ngày tải lên: 08/08/2014, 20:21

... cardinality." 96 Oracle SQL Internals Handbook References Oracle 9i Release 2: Database Performance Tuning Guide and Reference Chapter 7. Oracle 9I Release 2: Supplied PL /SQL Packages and ... figure 3) . We start by building a small table, and then doing different updates to different rows in that table. Sample data set: Figure 3: Preparing for update tes...

Ngày tải lên: 08/08/2014, 20:21

... Oracle SQL Internals Handbook References Oracle 9i Release 2 Datawarehousing Guide, Chapter 17. Oracle 9i Release 2 Supplied Types and PL /SQL packages, Chapter 90 (DBMS_xplan). $ORACLE_ HOME/rdbms/admin ... and btree to bitmap conversions. References Oracle 9i Release 2 Datawarehousing Guide, Chapter 6. 104 Oracle SQL Internals Handbook Figure 3: Sim...

Ngày tải lên: 08/08/2014, 20:21

... more subtle bitmap join index. 124 Oracle SQL Internals Handbook Embedding SQL in Java & PL /SQL CHAPTER 13 Java vs. PL /SQL: Where Do I Put the SQL? Note: The Source Code file that ... V_1922162 43_ F_5_E_9_9_0 The problem of incomprehensibility can be addressed by running script otrcsyn .sql in directory $ORACLE_ HOME/otrace/demo. 138 Oracle SQL...

Ngày tải lên: 08/08/2014, 20:21

... CONNECTION (DSL) JAVA ORACLE PACKAGE Single statement 286 1 13 Multiple statements 1662 506 TRUNCATE 217 33 2 152 Oracle SQL Internals Handbook Matrix Transposition in Oracle SQL CHAPTER 1 4 ... specify parameters in the PreparedStatement SQL string, but not in a Statement SQL string. Single statement: 148 Oracle SQL Internals Handbook SQL wit...

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... 83, 84 user_outlines 24 user_source 20 V v$event_name 134 v$session_wait 132 v $sql_ plan 65, 70, 116 v $sql_ plan_statistics 70 v $sql_ plan_statistics_all . 70 v$sqlarea 10 v$waitstat 132 ... optimizer_index_cost_adj 37 , 86 DBMS_OUTLN_EDT 41 dbms_stats 85 optimizer_mode 36 , 85 DBMS_STATS 36 , 41 oracle_ trace 133 dbms_xplan 117 oracle_ trace_collection_ name 135 de...

Ngày tải lên: 08/08/2014, 20:21