05.11.2015
•
■INDEX 719 slave processes I/O slaves, 181–82 overview, 181 parallel query slaves, 182 ps (process status) command , 51, 621 pseudo columns, 555 pslist tool, 56–57 PSTART (partition start) column, 585 PSTOP (partition stop) column, 585 pwd command , 50 Q Q000 (AQ queue process), 178 QCSID,QCSERIAL# identifiers, 635 QMNC (AQ monitor process), 178, 180 QMNn, 180 queries hard parsing, 11 non-blocking queries, 20 performance, and partitioning, 565–66 read-consistent queries, 20 soft parsing, 11 query (consistent) mode gets, 248 query coordinator SID (QCSID), 622 QUERY REWRITE privilege, 456 queue propagation, 180 R RAID (Redundant Array of Independent Disks), 98, 102 range partitioning, 567–70, 581, 607, 641 RANGE_EXAMPLE table, 579 RANGE_KEY_COLUMN column, 567 RAW devices, 319 raw partitions, 89 RAW type, 490, 502 RAWTOHEX function, 504 RBAL (Rebalance) process, 177 READ COMMITTED isolation level, 22, 249 behavior varies between databases, 236 concurrency control, 233, 235 read consistency, 24–26, 325 READ method, DBMS_LOB package, 673 READ ONLY isolation level, 22, 234, 242 compared to serializable isolation level, 241 concurrency control, 233, 241 READ UNCOMMITTED isolation level, 233–35 read-consistent queries, 20, 234 READSIZE parameter, 684 Real Application Clusters (RAC), 50 REAL datatype, 511 Rebalance (RBAL) process, 177 RECO (distributed database recovery), 174–75, 274 record length field, 667 RECORDS parameter, 683 Recovery Manager (RMAN) tool, 67, 106 recursive SQL, 94 Recycle pool, 141, 552 Redo, 65. See also undo archived redo log files, 101–2, 284 block cleanout, 314–17 cannot allocate new log message, 313–14 and COMMITs, 292, 294–98 database architecture, file types, 98 estimating amount of, 308 generating, and BEFORE/AFTER triggers, 302–8 importance of, 98 log contention, 317–19 measuring, 300, 302 new log, why can’t allocate, 313–14 online, 99–101, 284 operations without redo log generation overview, 308 setting NOLOGGING in SQL, 308–11 setting NOLOGGING on an index, 311–12 overview, 98–99, 283–87 preventing redo log generation, 308, 310 RAW devices, 319 and ROLLBACKs, 298–99 and temporary tables, 319–22 BEFORE trigger, increase Redo, 302 triggers effect on generation, 307 undo, how works with, 287–91 Redo buffer, 140 Redundant Array of Independent Disks (RAID), 98, 102 referential-integrity constraints, 627 REGION column, 590 REJECT ROWS WITH ALL NULL FIELDS parameter, 684 relational tables, compared to object tables, 417 remote execution, 157 REMOTE_LOGIN_PASSWORDFILE parameter, 103 REMOTE_OS_AUTHENT parameter, 103 REPEATABLE READ isolation level, 233, 237–39 REPLACE option, 652 replication, 36 requested trace files file locations, 80–81 naming convention, 81–82 overview, 79 tagging trace files, 82 RESET clause, 76 reset_stat.sql script, 118, 127 resource busy messages, 202–3 Resource Manager, 79 RESOURCE_NAME value, 18 RESOURCES table, 18 RETENTION clause, 551–52 RETURN AS LOCATOR nested table, 401 RETURN AS VALUE nested table, 401
720 ■INDEX REUSE option, 97 REUSE STORAGE option, 679 reverse key indexes, 422, 429–35 REVERSE keyword, 431 RMAN (Recovery Manager) tool, 67, 106 rollback, 235, 256, 265, 274, 276, 284. See also Undo compared to COMMIT statement, 298 description, 298 temporary tables, 319 ROLLBACK TO statement, 257 row directory, 93 row migration, avoiding, 348 ROW_NUMBER( ) function, 334 ROWDEPENDENCIES, 197–99 ROWID data type, 491, 580 ROWID/UROWID types, 555 ROWNUM, 88 RPAD( ) function, 498 RUN function, 696 runstats, 13 RVWR (recovery writer), 181 S SAVEPOINT statement, 256, 265 scalability comparison, performance, 228 scalar subqueries, 37 SCHEDULES table, 17 SCN (System Change or System Commit Number), 22, 296 secondary data files (SDFs), 673 security privileges, 456 segment space compression, 612–13 management, 341–42 segments, 90–93 SELECT command , 26 SELECT component, 643 SELECT COUNT(*) function, 40, 342 SELECT FOR UPDATE mode, 249, 253, 671 SELECT FOR UPDATE NOWAIT statement, 190 SELECT FOR UPDATE statement, 200 SELECT statement, 316, 518, 569, 618, 701, SQL SELECT.FOR UPDATE statement, 229 semaphores, 53 SEQUENCE object, 31 SERIALIZABLE isolation level, 22, 32, 239–41, 244 compared to read only isolation level, 241 concurrency control, 233, 239 Server Parameter Files (SPFILEs), 66 converting to, 71–73 corrupted, 77–78 creating PFILEs from, 76–77 overview, 71 setting values in, 73–75 unsetting values in, 76 server processes, 155 connections vs. sessions, 159–65 database architecture, 155–56 dedicated server connections, 57–58, 156–58 dedicated server vs. shared server overview, 165 potential benefits of shared server, 167, 169 when to use dedicated server, 165 when to use shared server, 166–67 MTS, 156, 158 overview, 156 shared server connections, 59–60, 158–59 service name, 61 session ID (SID), 324 session state, 160 SESSION_ID column, 641 sessions, 160 SET CONSTRAINTS ALL IMMEDIATE command , 262 SET TRANSACTION package, 256–57 SET_REDO_SIZE procedure, 303 SETPROPERTIES method, ORDYS.ORDIMAGE object, 678 SGA_MAX_SIZE parameter, 137, 146, 153 SGA_TARGET parameter, 137–38, 153 share DDL locks, 218 shared memory, 53, 56 shared pool, 11, 137, 148–50, 223 shared read locks, 24 problems with, 238 repeatable read isolation level, 237 shared server, 59–60, 156, 158–59 vs. dedicated server overview, 165 potential benefits of shared server, 167, 169 when to use dedicated server, 165 when to use shared server, 166–67 SHARED setting, 104 SHARED_POOL_SIZE parameter, 137, 149 SHOW PARAMETER command , 67, SQL*Plus SHOW_SPACE shared procedure, 379 SID,SERIAL# identifiers, 635 single connection, 10 single SQL statement, 267 SIZE 1024 option, 371 SIZE parameter, 375 SKIP 7 parameter, 684 skip scan method, 475 slave processes, 155 database architecture, 155, 181 I/O slaves, 181–82 overview, 181 parallel query slaves, 182 sleep count, 222 sliding window process, 592, 613
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Expert Oracle Database Architecture
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Contents Foreword . . . . . . . . .
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■CONTENTS v Block Buffer Cache .
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■CONTENTS vii ■CHAPTER 9 Redo a
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■CONTENTS ix ■CHAPTER 12 Dataty
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Foreword “THINK.” In 1914, Thom
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■FOREWORD xiii Tom is an aficiona
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About the Technical Reviewers ■JO
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Introduction The inspiration for th
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■INTRODUCTION xix • Exposure to
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■INTRODUCTION xxi Chapter 3: File
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■INTRODUCTION xxiii Next up are t
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Setting Up Your Environment In this
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■SETTING UP YOUR ENVIRONMENT xxvi
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■SETTING UP YOUR ENVIRONMENT xxix
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■SETTING UP YOUR ENVIRONMENT xxxi
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■SETTING UP YOUR ENVIRONMENT xxxi
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■SETTING UP YOUR ENVIRONMENT xxxv
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■SETTING UP YOUR ENVIRONMENT xxxv
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■SETTING UP YOUR ENVIRONMENT xxxi
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■SETTING UP YOUR ENVIRONMENT xli
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■SETTING UP YOUR ENVIRONMENT xlii
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CHAPTER 1 ■ ■ ■ Developing Su
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CHAPTER 1 ■ DEVELOPING SUCCESSFUL
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CHAPTER 1 ■ DEVELOPING SUCCESSFUL
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CHAPTER 1 ■ DEVELOPING SUCCESSFUL
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50 CHAPTER 2 ■ ARCHITECTURE OVERV
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52 CHAPTER 2 ■ ARCHITECTURE OVERV
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54 CHAPTER 2 ■ ARCHITECTURE OVERV
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56 CHAPTER 2 ■ ARCHITECTURE OVERV
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58 CHAPTER 2 ■ ARCHITECTURE OVERV
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60 CHAPTER 2 ■ ARCHITECTURE OVERV
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62 CHAPTER 2 ■ ARCHITECTURE OVERV
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CHAPTER 3 ■ ■ ■ Files In this
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CHAPTER 3 ■ FILES 67 Without a pa
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CHAPTER 3 ■ FILES 69 and even dat
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CHAPTER 3 ■ FILES 71 all operatio
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CHAPTER 3 ■ FILES 73 *.cluster_da
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CHAPTER 3 ■ FILES 75 ops$tkyte@OR
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CHAPTER 3 ■ FILES 77 • To maint
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CHAPTER 3 ■ FILES 79 • Resource
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CHAPTER 3 ■ FILES 81 3 l_dummy nu
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CHAPTER 3 ■ FILES 83 Trace Files
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CHAPTER 3 ■ FILES 85 _qerixAlloca
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CHAPTER 3 ■ FILES 87 6 ( 7 TYPE O
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CHAPTER 3 ■ FILES 89 A Brief Revi
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CHAPTER 3 ■ FILES 91 Redundant Ar
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CHAPTER 3 ■ FILES 93 (data from m
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CHAPTER 3 ■ FILES 95 dictionary t
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CHAPTER 3 ■ FILES 97 ■Note df i
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CHAPTER 3 ■ FILES 99 “accidenta
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CHAPTER 3 ■ FILES 101 So, at the
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CHAPTER 3 ■ FILES 103 Password Fi
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CHAPTER 3 ■ FILES 105 USER is "SY
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CHAPTER 3 ■ FILES 107 Flashback L
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CHAPTER 3 ■ FILES 109 of the requ
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CHAPTER 3 ■ FILES 111 IMPDP, howe
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CHAPTER 3 ■ FILES 113 tkyte@ORA10
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CHAPTER 4 ■ ■ ■ Memory Struct
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CHAPTER 4 ■ MEMORY STRUCTURES 117
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CHAPTER 4 ■ MEMORY STRUCTURES 119
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CHAPTER 4 ■ MEMORY STRUCTURES 121
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CHAPTER 4 ■ MEMORY STRUCTURES 123
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CHAPTER 4 ■ MEMORY STRUCTURES 125
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CHAPTER 4 ■ MEMORY STRUCTURES 127
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CHAPTER 4 ■ MEMORY STRUCTURES 131
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CHAPTER 4 ■ MEMORY STRUCTURES 135
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CHAPTER 4 ■ MEMORY STRUCTURES 137
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CHAPTER 4 ■ MEMORY STRUCTURES 141
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CHAPTER 4 ■ MEMORY STRUCTURES 147
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CHAPTER 4 ■ MEMORY STRUCTURES 149
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CHAPTER 4 ■ MEMORY STRUCTURES 151
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CHAPTER 4 ■ MEMORY STRUCTURES 153
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CHAPTER 5 ■ ■ ■ Oracle Proces
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CHAPTER 5 ■ ORACLE PROCESSES 157
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CHAPTER 5 ■ ORACLE PROCESSES 159
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CHAPTER 5 ■ ORACLE PROCESSES 161
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CHAPTER 5 ■ ORACLE PROCESSES 163
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CHAPTER 5 ■ ORACLE PROCESSES 165
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CHAPTER 5 ■ ORACLE PROCESSES 167
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CHAPTER 5 ■ ORACLE PROCESSES 171
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CHAPTER 5 ■ ORACLE PROCESSES 173
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CHAPTER 5 ■ ORACLE PROCESSES 175
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CHAPTER 5 ■ ORACLE PROCESSES 177
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CHAPTER 5 ■ ORACLE PROCESSES 179
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CHAPTER 5 ■ ORACLE PROCESSES 181
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CHAPTER 6 ■ ■ ■ Locking and L
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 6 ■ LOCKING AND LATCHING
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CHAPTER 7 ■ ■ ■ Concurrency a
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CHAPTER 7 ■ CONCURRENCY AND MULTI
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CHAPTER 7 ■ CONCURRENCY AND MULTI
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CHAPTER 7 ■ CONCURRENCY AND MULTI
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CHAPTER 7 ■ CONCURRENCY AND MULTI
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CHAPTER 7 ■ CONCURRENCY AND MULTI
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CHAPTER 7 ■ CONCURRENCY AND MULTI
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CHAPTER 7 ■ CONCURRENCY AND MULTI
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CHAPTER 7 ■ CONCURRENCY AND MULTI
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CHAPTER 7 ■ CONCURRENCY AND MULTI
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CHAPTER 7 ■ CONCURRENCY AND MULTI
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CHAPTER 7 ■ CONCURRENCY AND MULTI
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CHAPTER 8 ■ ■ ■ Transactions
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CHAPTER 8 ■ TRANSACTIONS 257 •
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CHAPTER 8 ■ TRANSACTIONS 259 So,
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CHAPTER 8 ■ TRANSACTIONS 261 X --
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CHAPTER 8 ■ TRANSACTIONS 263 “s
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CHAPTER 8 ■ TRANSACTIONS 265 busi
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CHAPTER 8 ■ TRANSACTIONS 267 Many
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CHAPTER 8 ■ TRANSACTIONS 269 ops$
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CHAPTER 8 ■ TRANSACTIONS 271 last
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CHAPTER 8 ■ TRANSACTIONS 273 Dist
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CHAPTER 8 ■ TRANSACTIONS 275 Auto
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CHAPTER 8 ■ TRANSACTIONS 277 3 Au
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CHAPTER 8 ■ TRANSACTIONS 279 5 pr
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CHAPTER 8 ■ TRANSACTIONS 281 scot
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284 CHAPTER 9 ■ REDO AND UNDO cri
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286 CHAPTER 9 ■ REDO AND UNDO Fir
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288 CHAPTER 9 ■ REDO AND UNDO The
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290 CHAPTER 9 ■ REDO AND UNDO We
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292 CHAPTER 9 ■ REDO AND UNDO Wha
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294 CHAPTER 9 ■ REDO AND UNDO row
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296 CHAPTER 9 ■ REDO AND UNDO If
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298 CHAPTER 9 ■ REDO AND UNDO ops
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300 CHAPTER 9 ■ REDO AND UNDO Inv
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302 CHAPTER 9 ■ REDO AND UNDO The
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304 CHAPTER 9 ■ REDO AND UNDO 41
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306 CHAPTER 9 ■ REDO AND UNDO ins
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308 CHAPTER 9 ■ REDO AND UNDO So,
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310 CHAPTER 9 ■ REDO AND UNDO ops
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312 CHAPTER 9 ■ REDO AND UNDO ops
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314 CHAPTER 9 ■ REDO AND UNDO •
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316 CHAPTER 9 ■ REDO AND UNDO ...
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318 CHAPTER 9 ■ REDO AND UNDO •
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320 CHAPTER 9 ■ REDO AND UNDO bac
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322 CHAPTER 9 ■ REDO AND UNDO As
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324 CHAPTER 9 ■ REDO AND UNDO ops
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326 CHAPTER 9 ■ REDO AND UNDO wil
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328 CHAPTER 9 ■ REDO AND UNDO Thi
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330 CHAPTER 9 ■ REDO AND UNDO ops
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332 CHAPTER 9 ■ REDO AND UNDO Whe
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334 CHAPTER 9 ■ REDO AND UNDO Tha
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336 CHAPTER 9 ■ REDO AND UNDO tou
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338 CHAPTER 10 ■ DATABASE TABLES
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340 CHAPTER 10 ■ DATABASE TABLES
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342 CHAPTER 10 ■ DATABASE TABLES
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344 CHAPTER 10 ■ DATABASE TABLES
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346 CHAPTER 10 ■ DATABASE TABLES
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348 CHAPTER 10 ■ DATABASE TABLES
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350 CHAPTER 10 ■ DATABASE TABLES
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352 CHAPTER 10 ■ DATABASE TABLES
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354 CHAPTER 10 ■ DATABASE TABLES
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356 CHAPTER 10 ■ DATABASE TABLES
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358 CHAPTER 10 ■ DATABASE TABLES
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360 CHAPTER 10 ■ DATABASE TABLES
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362 CHAPTER 10 ■ DATABASE TABLES
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364 CHAPTER 10 ■ DATABASE TABLES
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366 CHAPTER 10 ■ DATABASE TABLES
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368 CHAPTER 10 ■ DATABASE TABLES
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370 CHAPTER 10 ■ DATABASE TABLES
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372 CHAPTER 10 ■ DATABASE TABLES
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374 CHAPTER 10 ■ DATABASE TABLES
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376 CHAPTER 10 ■ DATABASE TABLES
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378 CHAPTER 10 ■ DATABASE TABLES
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380 CHAPTER 10 ■ DATABASE TABLES
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382 CHAPTER 10 ■ DATABASE TABLES
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384 CHAPTER 10 ■ DATABASE TABLES
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386 CHAPTER 10 ■ DATABASE TABLES
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388 CHAPTER 10 ■ DATABASE TABLES
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390 CHAPTER 10 ■ DATABASE TABLES
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392 CHAPTER 10 ■ DATABASE TABLES
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394 CHAPTER 10 ■ DATABASE TABLES
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396 CHAPTER 10 ■ DATABASE TABLES
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398 CHAPTER 10 ■ DATABASE TABLES
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400 CHAPTER 10 ■ DATABASE TABLES
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402 CHAPTER 10 ■ DATABASE TABLES
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404 CHAPTER 10 ■ DATABASE TABLES
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406 CHAPTER 10 ■ DATABASE TABLES
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408 CHAPTER 10 ■ DATABASE TABLES
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410 CHAPTER 10 ■ DATABASE TABLES
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412 CHAPTER 10 ■ DATABASE TABLES
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414 CHAPTER 10 ■ DATABASE TABLES
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416 CHAPTER 10 ■ DATABASE TABLES
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418 CHAPTER 10 ■ DATABASE TABLES
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CHAPTER 11 ■ ■ ■ Indexes Inde
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CHAPTER 11 ■ INDEXES 423 value of
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CHAPTER 11 ■ INDEXES 425 One of t
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CHAPTER 11 ■ INDEXES 427 We then
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CHAPTER 11 ■ INDEXES 429 we ended
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CHAPTER 11 ■ INDEXES 431 The data
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CHAPTER 11 ■ INDEXES 435 Table 11
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CHAPTER 11 ■ INDEXES 437 When Sho
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CHAPTER 11 ■ INDEXES 439 an 8KB b
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CHAPTER 11 ■ INDEXES 441 select *
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CHAPTER 11 ■ INDEXES 443 select *
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CHAPTER 11 ■ INDEXES 445 Indicate
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CHAPTER 11 ■ INDEXES 447 an index
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CHAPTER 11 ■ INDEXES 449 Table 11
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CHAPTER 11 ■ INDEXES 451 9 1, 'M'
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CHAPTER 11 ■ INDEXES 453 column w
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CHAPTER 11 ■ INDEXES 455 Bitmap j
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CHAPTER 11 ■ INDEXES 457 INSERT a
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CHAPTER 11 ■ INDEXES 459 7 l_last
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CHAPTER 11 ■ INDEXES 461 ops$tkyt
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CHAPTER 11 ■ INDEXES 463 If we co
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CHAPTER 11 ■ INDEXES 467 Caveat o
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CHAPTER 11 ■ INDEXES 469 ops$tkyt
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CHAPTER 11 ■ INDEXES 471 Frequent
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CHAPTER 11 ■ INDEXES 473 select *
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CHAPTER 11 ■ INDEXES 475 If you s
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CHAPTER 11 ■ INDEXES 479 Predicat
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CHAPTER 11 ■ INDEXES 485 This dem
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CHAPTER 11 ■ INDEXES 487 SELECT /
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CHAPTER 12 ■ ■ ■ Datatypes Ch
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CHAPTER 12 ■ DATATYPES 491 • TI
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CHAPTER 12 ■ DATATYPES 493 (in th
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CHAPTER 12 ■ DATATYPES 497 ops$tk
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CHAPTER 12 ■ DATATYPES 499 Table
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CHAPTER 12 ■ DATATYPES 501 The IN
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CHAPTER 12 ■ DATATYPES 503 ops$tk
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CHAPTER 12 ■ DATATYPES 505 • BI
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CHAPTER 12 ■ DATATYPES 507 NUMBER
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CHAPTER 12 ■ DATATYPES 509 MSG NU
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CHAPTER 12 ■ DATATYPES 511 They a
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CHAPTER 12 ■ DATATYPES 513 ■Not
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CHAPTER 12 ■ DATATYPES 515 Coping
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CHAPTER 12 ■ DATATYPES 517 Note t
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CHAPTER 12 ■ DATATYPES 519 We are
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CHAPTER 12 ■ DATATYPES 521 Format
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CHAPTER 12 ■ DATATYPES 523 ops$tk
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CHAPTER 12 ■ DATATYPES 525 You ca
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CHAPTER 12 ■ DATATYPES 527 month
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CHAPTER 12 ■ DATATYPES 529 DT2-DT
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CHAPTER 12 ■ DATATYPES 531 DT TS
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CHAPTER 12 ■ DATATYPES 533 ops$tk
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CHAPTER 12 ■ DATATYPES 535 Since
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CHAPTER 12 ■ DATATYPES 541 suppor
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CHAPTER 12 ■ DATATYPES 543 Concep
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CHAPTER 12 ■ DATATYPES 547 buffer
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CHAPTER 12 ■ DATATYPES 551 13 dbm
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CHAPTER 12 ■ DATATYPES 553 equall
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CHAPTER 12 ■ DATATYPES 555 ROWID/
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CHAPTER 13 ■ ■ ■ Partitioning
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CHAPTER 13 ■ PARTITIONING 559 6 (
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CHAPTER 13 ■ PARTITIONING 561 els
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CHAPTER 13 ■ PARTITIONING 563 BIG
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CHAPTER 13 ■ PARTITIONING 565 Enh
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CHAPTER 13 ■ PARTITIONING 567 Tab
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CHAPTER 13 ■ PARTITIONING 569 tha
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CHAPTER 13 ■ PARTITIONING 571 PAR
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CHAPTER 13 ■ PARTITIONING 573 35
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CHAPTER 13 ■ PARTITIONING 575 If
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CHAPTER 13 ■ PARTITIONING 579 14
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CHAPTER 13 ■ PARTITIONING 581 ops
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CHAPTER 13 ■ PARTITIONING 583 In
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CHAPTER 13 ■ PARTITIONING 585 ops
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CHAPTER 13 ■ PARTITIONING 587 | S
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CHAPTER 13 ■ PARTITIONING 589 12
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CHAPTER 13 ■ PARTITIONING 591 ops
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CHAPTER 13 ■ PARTITIONING 593 •
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CHAPTER 13 ■ PARTITIONING 595 Now
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CHAPTER 13 ■ PARTITIONING 609 Row
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CHAPTER 13 ■ PARTITIONING 611 So,
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CHAPTER 14 ■ ■ ■ Parallel Exe
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CHAPTER 14 ■ PARALLEL EXECUTION 6
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CHAPTER 15 ■ ■ ■ Data Loading
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706 ■INDEX autonomous transaction
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708 ■INDEX CREATE ANY DIRECTORY f
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710 ■INDEX dedicated server, 57-5
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712 ■INDEX flat files, 66, 113-14
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714 ■INDEX job queue coordinator
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716 ■INDEX MAXTRANS parameter, 21
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718 ■INDEX parameter files (PFILE
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722 ■INDEX System Global Area (SG
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724 ■INDEX utility background pro
720<br />
■INDEX<br />
REUSE option, 97<br />
REUSE STORAGE option, 679<br />
reverse key indexes, 422, 429–35<br />
REVERSE keyword, 431<br />
RMAN (Recovery Manager) tool, 67, 106<br />
rollback, 235, 256, 265, 274, 276, 284. See also<br />
Undo<br />
compared to COMMIT statement, 298<br />
description, 298<br />
temporary tables, 319<br />
ROLLBACK TO statement, 257<br />
row directory, 93<br />
row migration, avoiding, 348<br />
ROW_NUMBER( ) function, 334<br />
ROWDEPENDENCIES, 197–99<br />
ROWID data type, 491, 580<br />
ROWID/UROWID types, 555<br />
ROWNUM, 88<br />
RPAD( ) function, 498<br />
RUN function, 696<br />
runstats, 13<br />
RVWR (recovery writer), 181<br />
S<br />
SAVEPOINT statement, 256, 265<br />
scalability comparison, performance, 228<br />
scalar subqueries, 37<br />
SCHEDULES table, 17<br />
SCN (System Change or System Commit<br />
Number), 22, 296<br />
secondary data files (SDFs), 673<br />
security privileges, 456<br />
segment space<br />
compression, 612–13<br />
management, 341–42<br />
segments, 90–93<br />
SELECT comm<strong>and</strong>, 26<br />
SELECT component, 643<br />
SELECT COUNT(*) function, 40, 342<br />
SELECT FOR UPDATE mode, 249, 253, 671<br />
SELECT FOR UPDATE NOWAIT statement, 190<br />
SELECT FOR UPDATE statement, 200<br />
SELECT statement, 316, 518, 569, 618, 701, SQL<br />
SELECT.FOR UPDATE statement, 229<br />
semaphores, 53<br />
SEQUENCE object, 31<br />
SERIALIZABLE isolation level, 22, 32, 239–41,<br />
244<br />
compared to read only isolation level, 241<br />
concurrency control, 233, 239<br />
Server Parameter Files (SPFILEs), 66<br />
converting to, 71–73<br />
corrupted, 77–78<br />
creating PFILEs from, 76–77<br />
overview, 71<br />
setting values in, 73–75<br />
unsetting values in, 76<br />
server processes, 155<br />
connections vs. sessions, 159–65<br />
database architecture, 155–56<br />
dedicated server connections, 57–58, 156–58<br />
dedicated server vs. shared server<br />
overview, 165<br />
potential benefits of shared server, 167,<br />
169<br />
when to use dedicated server, 165<br />
when to use shared server, 166–67<br />
MTS, 156, 158<br />
overview, 156<br />
shared server connections, 59–60, 158–59<br />
service name, 61<br />
session ID (SID), 324<br />
session state, 160<br />
SESSION_ID column, 641<br />
sessions, 160<br />
SET CONSTRAINTS ALL IMMEDIATE<br />
comm<strong>and</strong>, 262<br />
SET TRANSACTION package, 256–57<br />
SET_REDO_SIZE procedure, 303<br />
SETPROPERTIES method, ORDYS.ORDIMAGE<br />
object, 678<br />
SGA_MAX_SIZE parameter, 137, 146, 153<br />
SGA_TARGET parameter, 137–38, 153<br />
share DDL locks, 218<br />
shared memory, 53, 56<br />
shared pool, 11, 137, 148–50, 223<br />
shared read locks, 24<br />
problems with, 238<br />
repeatable read isolation level, 237<br />
shared server, 59–60, 156, 158–59<br />
vs. dedicated server<br />
overview, 165<br />
potential benefits of shared server, 167,<br />
169<br />
when to use dedicated server, 165<br />
when to use shared server, 166–67<br />
SHARED setting, 104<br />
SHARED_POOL_SIZE parameter, 137, 149<br />
SHOW PARAMETER comm<strong>and</strong>, 67, SQL*Plus<br />
SHOW_SPACE shared procedure, 379<br />
SID,SERIAL# identifiers, 635<br />
single connection, 10<br />
single SQL statement, 267<br />
SIZE 1024 option, 371<br />
SIZE parameter, 375<br />
SKIP 7 parameter, 684<br />
skip scan method, 475<br />
slave processes, 155<br />
database architecture, 155, 181<br />
I/O slaves, 181–82<br />
overview, 181<br />
parallel query slaves, 182<br />
sleep count, 222<br />
sliding window process, 592, 613
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