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Apress.Expert.Oracle.Database.Architecture.9i.and.10g.Programming.Techniques.and.Solutions.Sep.2005

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■INDEX 719<br />

slave processes<br />

I/O slaves, 181–82<br />

overview, 181<br />

parallel query slaves, 182<br />

ps (process status) comm<strong>and</strong>, 51, 621<br />

pseudo columns, 555<br />

pslist tool, 56–57<br />

PSTART (partition start) column, 585<br />

PSTOP (partition stop) column, 585<br />

pwd comm<strong>and</strong>, 50<br />

Q<br />

Q000 (AQ queue process), 178<br />

QCSID,QCSERIAL# identifiers, 635<br />

QMNC (AQ monitor process), 178, 180<br />

QMNn, 180<br />

queries<br />

hard parsing, 11<br />

non-blocking queries, 20<br />

performance, <strong>and</strong> partitioning, 565–66<br />

read-consistent queries, 20<br />

soft parsing, 11<br />

query (consistent) mode gets, 248<br />

query coordinator SID (QCSID), 622<br />

QUERY REWRITE privilege, 456<br />

queue propagation, 180<br />

R<br />

RAID (Redundant Array of Independent Disks),<br />

98, 102<br />

range partitioning, 567–70, 581, 607, 641<br />

RANGE_EXAMPLE table, 579<br />

RANGE_KEY_COLUMN column, 567<br />

RAW devices, 319<br />

raw partitions, 89<br />

RAW type, 490, 502<br />

RAWTOHEX function, 504<br />

RBAL (Rebalance) process, 177<br />

READ COMMITTED isolation level, 22, 249<br />

behavior varies between databases, 236<br />

concurrency control, 233, 235<br />

read consistency, 24–26, 325<br />

READ method, DBMS_LOB package, 673<br />

READ ONLY isolation level, 22, 234, 242<br />

compared to serializable isolation level, 241<br />

concurrency control, 233, 241<br />

READ UNCOMMITTED isolation level, 233–35<br />

read-consistent queries, 20, 234<br />

READSIZE parameter, 684<br />

Real Application Clusters (RAC), 50<br />

REAL datatype, 511<br />

Rebalance (RBAL) process, 177<br />

RECO (distributed database recovery), 174–75,<br />

274<br />

record length field, 667<br />

RECORDS parameter, 683<br />

Recovery Manager (RMAN) tool, 67, 106<br />

recursive SQL, 94<br />

Recycle pool, 141, 552<br />

Redo, 65. See also undo<br />

archived redo log files, 101–2, 284<br />

block cleanout, 314–17<br />

cannot allocate new log message, 313–14<br />

<strong>and</strong> COMMITs, 292, 294–98<br />

database architecture, file types, 98<br />

estimating amount of, 308<br />

generating, <strong>and</strong> BEFORE/AFTER triggers,<br />

302–8<br />

importance of, 98<br />

log contention, 317–19<br />

measuring, 300, 302<br />

new log, why can’t allocate, 313–14<br />

online, 99–101, 284<br />

operations without redo log generation<br />

overview, 308<br />

setting NOLOGGING in SQL, 308–11<br />

setting NOLOGGING on an index, 311–12<br />

overview, 98–99, 283–87<br />

preventing redo log generation, 308, 310<br />

RAW devices, 319<br />

<strong>and</strong> ROLLBACKs, 298–99<br />

<strong>and</strong> temporary tables, 319–22<br />

BEFORE trigger, increase Redo, 302<br />

triggers effect on generation, 307<br />

undo, how works with, 287–91<br />

Redo buffer, 140<br />

Redundant Array of Independent Disks (RAID),<br />

98, 102<br />

referential-integrity constraints, 627<br />

REGION column, 590<br />

REJECT ROWS WITH ALL NULL FIELDS<br />

parameter, 684<br />

relational tables, compared to object tables, 417<br />

remote execution, 157<br />

REMOTE_LOGIN_PASSWORDFILE parameter,<br />

103<br />

REMOTE_OS_AUTHENT parameter, 103<br />

REPEATABLE READ isolation level, 233, 237–39<br />

REPLACE option, 652<br />

replication, 36<br />

requested trace files<br />

file locations, 80–81<br />

naming convention, 81–82<br />

overview, 79<br />

tagging trace files, 82<br />

RESET clause, 76<br />

reset_stat.sql script, 118, 127<br />

resource busy messages, 202–3<br />

Resource Manager, 79<br />

RESOURCE_NAME value, 18<br />

RESOURCES table, 18<br />

RETENTION clause, 551–52<br />

RETURN AS LOCATOR nested table, 401<br />

RETURN AS VALUE nested table, 401

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