Oracle Database 10g: Managing the Self-Managing Database Certified Oracle 10g Technician ppt

Automatic, two-level parallelism — Direct Path for inter-partition parallelism — External Tables for intra-partition parallelism — Simple: parallel= — Dynamic: Workers can be added a

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How DBAs Spend Their Time?

12%

Maintain Software

Load Data 6%

System

Management

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How DBAs

Maintain Software 6%

Configure 12%

Load Data 6%

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Softw are Installation

¢ Fast lightweight install

— Major redesign of installation process

— Single CD, 20 Minutes

— CPU, memory, disk space consumption greatly reduced

— Extremely lightweight client install (3 files) using Oracle Instant

Client

¢ Automation of All Pre and Post Install Steps

— Validate OS Configuration, patches, resource availability etc

— Configure all components (listeners, database, agent, OMS, OID etc.) for automatic startup and shutdown

e Enhanced silent install

[raining Center

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Simplified Creation &

Configuration

Greatly reduced database creation time using

pre-configured, ready-to-use database 90% reduction of initialization parameters: < 30 Basic parameters

Automatically setup common tasks, e.g backups

Automatically configures LDAP server Automatic Shared Server Set-up

Easy Connect Naming

eat

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Basic Parameters

compatible cluster_database processes db block size sessions sga_target pga_aggregate_target control_ files nis_language db name nis_ territory db_recovery_file_dest

db domain remote_listener shared_ servers db_recovery_file_dest_size instance_number

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simplified Upgrade

Pre upgrade checks (e.g parameter settings) Post upgrade status checks

Time estimator Re-startable

Guide administrators in using best practices

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administration and oe

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Estimated Crash Recov

Prob T spaces : nos Es

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Listener discovery, configuration & monitoring

Alert Triggered May 30, 2003 4:2

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How DBAs

Maintain Software 6%

Configure 12%

Load Data 6%

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Data Pump: What Is it?

Server-based facility for high performance loading and unloading of data and metadata Callable: DBMS _DATAPUMP Internally uses DBMS_METADATA

Data written in Direct Path stream format Metadata

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Features: Performance!!

Automatic, two-level parallelism

— Direct Path for inter-partition parallelism

— External Tables for intra-partition parallelism

— Simple: parallel=<number of active threads>

— Dynamic: Workers can be added and removed from a running

job in Enterprise Edition

— Index builds automatically “parallelized” up to degree of job

Simultaneous data and metadata unload single thread of data unload: 1.5-2X exp single thread of data load: 15X-40X imp With index builds: 4-10X imp

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Features: Checkpoint / Restart

Job progress recorded in a “Master Table”

May be explicitly stopped and restarted later:

— Stop after current item finishes or stop immediate

Abnormally terminated job Is also restartable Current objects can be skipped on restart if problematic

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Training Center

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Per-worker status showing current object and percent done

Initial job Soace estimate and overall percent done

Job state and description

Work-in-progress and errors

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Features: Network Mode —

VS

Network import: Load one database _-

directly from another :

Network export: Unload a remote database to a local dumpiile set

— Allows export of read-only databases

Data Pump runs locally, Metadata API runs remotely

Uses DB links / listener service names, not pipes Data

is moved as ‘insert into <local table> select from <remote table>@service name’

Direct path engine is used on both ends Its easy to swamp network bandwiath: Be careful!

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Features: Fine-Grained Object Selection

¢ All object types are supported tor both operations:

export and import Exclude: Specified object types are excluded from the operation

Include: Only the specified object types are included

E.g, just retrieve packages, functions and procedures More than one of each can be specified, but use of both

is prohibited by new clients Both take an optional name filter for even finer granularity:

— INCLUDE PACKAGE: “LIKE ‘PAYROLL%'’ ‘

— EXCLUDE TABLE: “IN (‘FOO’,’BAR’, )’ “

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New Clients - expdp / impdp

`,

Similar (but not identical) look and feel to exp / imp

All modes supported: full, schema, table, tablespace, transportable Superset of exp / imp

¢ If privileged, attach to and control other users’ jobs

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New Clients - expdbp / Impdp

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STOP _JOB{=IMMEDIATE}: Stop job, leaving it restartable

Immediate doesn't wait for workers to finish current work

items they'll be re-done at restart START JOB: Restart a previously stopped job KILL_JOB: Stop job and delete all its resources (master table, dump files) leaving it unrestartable

CONTINUE: Leave interactive mode, continue logging

EXIT: Exit client, leave job running

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Features: Other Cool Stuff

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Can extract and load just data, just metadata or both I

SQLFILE operation generates executable DDL script 3

lí a table pre-exists at load time, you can: skip it (default), replace it, truncate then load or append to It

Space estimates based on allocated blocks (default) or

Statistics if available

Enterprise Manager interface integrates 9i and 10¢

Callable!

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Large Internet Company

2 Fact Tables: 16.2M rows, 2 Gb

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Keep in Mind: `

Designed for *big* jobs with lots of data

— Metadata performance is about the same

— More complex infrastructure, longer startup

XML ts bigger than DDL, but much more flexible

Data format in dump files is ~15% more

compact than exp

Import subsetting is accomplished by pruning the Master Table

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Original exp and Imp

as

forever to allow loading of V5 — V9i dump files

Original exp will ship at least in 10g, but may

not support all new functionality

9i exp may be used for downgrades trom 10g

Original and Data Pump dump file formats are

not compatible

Oracle ABEL

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How DBAs Spend Their Time?

Install Create &

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Solution: Self-Managing Database

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Common Manageability Infrastructure:

Automatic Workload Repository

Tasks

Alerts Framework

of the Database Automatic collection access

of important statistics

Oracle

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Automatic Workload Repository

SYSAUX

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Statistics Level

STATISTICS LEVEL

diagnostics

Training Center

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Configuring The Workload Repository

Home ` À Configuration y Alerts \ Management Sy

Snapshot Retention (days) 7 Snapshot Interval (minutes) 30

Collection Level TYPICAL Next Snapshot Capture Time Apr 4, 2003 4:00:28 AM

‹ Edit )

NumberofSnapshots 164 Number of Baselines 2 Latest Snapshot Time Apr 4, 2003 3:30:28 AM Earliest Snapshot Time Mar 31, 2003 5:58:31 PM

Oracle

Training Center

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Manually Creating Snapshots

ORACLE Setup Preferences Help

Home à ` Configuration ¥ Alerts i Jobs y \íanagernent Syst:

Host: dlsun1372.us.nracle cam > Database: svrman_disuni9/2 > VYorkload Repository > Snapshots

A, snapshot is a collection of database statistics at a single point in time You can use the information in snapshots to diagnose database problems

select a beginning snapshot from the list Then choose an action to perform, and click ‘Go’

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Database Feature Usage Metric Collection

maximum number of data files,

DBA_FEATURE_USAGE_STATISTICS DBA HIGH WATER MARK_ STATISTICS

HOST CONFIGURATION INFO

EM Repository: ECM

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Server Alerts

Automatic Notification Alerts

Training Center

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Server Alerts Delivery Process

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server-Generated Alert Types

Non- Too Old Suspended Free Space

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EM Interface to Alerts

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Up Since Jun 3, 2003 3:47:11 PM Time Zone PDT

Availability (%) 99.22

Using CPU (33.8%)

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Version 10.1.0.0.0 Host dsunrdf03.us Oracle Home /ade/oracle mamt10i/oracle

Alert Log Jun 3, 2003 3:49:04 PM

Problem Tablespaces Fragmentation Issues Dump Area Used (%)

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ADDM Findings 3 Configuration

vailability Estimated Crash Recovery Time

(seconds) Last Backup n/a Archiving Disabled Archive Area Used (%) n/a

31

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the latest ADDM analysis

time per call is 0.56 seconds Click here to see

Alert Triggered Value Jun 2, 2003 122 12:19:14 PM 10:30:20 AM Jun 3, 2003 5:56:08 0.12 Jun 4, 2003

PM 10:45:07 AM

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setting Alert Thresholds

ORACLE

Database: syrman dlsun14/2 > Edit Metric Thresholds

Use these metrics to monitor conditions as they reach their critical and

warning thresholds Alerts are generated when thresholds are reached

Change the thresholds as required

Tiêu đề	Oracle Database 10g: Managing the Self-Managing Database
Chuyên ngành	Database Management
Thể loại	PPT

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