Oracle 10g First Impressions
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Transcript of Oracle 10g First Impressions
8/4/2019 Oracle 10g First Impressions
http://slidepdf.com/reader/full/oracle-10g-first-impressions 1/19
Oracle 10g:First Impressions
Copyright, 2004 © Paul D. Phillips
To Educate and Inform
the Members of the
Central Florida Oracle
Users Group
8/4/2019 Oracle 10g First Impressions
http://slidepdf.com/reader/full/oracle-10g-first-impressions 2/19
Introduction
• Introduction
• RAC Implementation
• New Features
• Questions??
8/4/2019 Oracle 10g First Impressions
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The Current Environment
• Two 9.2.0.5 databases and instances: 1) aproduction instance using 8 GB of memory and a650 GB database System and 2) a stage instance
using .5 GB of memory and 100 GB database
• Three 10.2.0.1 instances and two databases: 1) adevelopment instance using 1.5 GB of memory and200 GB database and 2) two RAC clustered
instances using .5 GB of memory and a shared 150GB database
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RAC on 10g Implementation
• Needed to get our WEB users off the productionBatch System ( license and performance issues )
• Tasked to do it this way due to funding challenges
and on Win 2K • Bought 500 GB Disk Array off EBay (~ $2K)
• Built 2 white box PCs w/ 1 2.6 Ghz CPU (2 CPUmotherboard,) 1 GB Memory, ~ $2K each
• GB NIC cards, Raid SCSI controllers,GB Mini switch for ~ $2K
• Total: about $9K
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RAC on 10g (cont)
• Challenges: SCSI cards had to be Clusteraware
• Went through 4 sets of cards
• Array had 14 drives, 1 array controllerand 2 SCSI cards; needed 17 SCSI ids
• You can only have 16 per device
• Had to unplug 2 drives – array now has210GB of SAME storage
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RAC on 10g (cont)
• Installed Cluster Ready Services on C:\ drive of both systems automatically with
one install• Smooth install, no problems, nice
• Array came up Clustered and shared
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RAC on 10g (cont)
• Installed Oracle 10g on Cluster disk inprivate partition for software
• Only takes ~ 1 GB
• Took < 40 minutes
• Installer seems to be finally getting tothe point it needs to be
• Overall install experience: Very Positive
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RAC on 10g (cont): Current issues
• Can’t get Failover to work at all (is now working)
• Can’t get Load Balancing to work consistently(is now working)
• Have been working with Oracle for nearly 2weeks, about 30 hours total
• Documentation is either wrong or missing
• Problem: Not a lot on 10g in the online Notesand Docs, period
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10g New Features
• On 9i, there were 9 system processes
• On 10g, there are 14 (in Win 2K)
• Need more Memory for basic Oracleprocesses
• Need to investigate all the automaticprocesses, defaults are probably tooaggressive
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10g New Features (cont)
• New: SYSAUX tablespace
• Holds all the non DD stuff, such as
Automated Workload Repository, XMLschemas, example schemas etc.
• About the same size as the SYSTEM
tablespace
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10g New Features (cont)
• New Space related features
• Tablespace Groups: Combines multiple
Temporary Tablespaces into one pool forthe whole database (Group can be theDefault Tablespace)
• Rename Tablespace: when transportingtablespaces, eliminates name conflicts
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10g New Features (cont)
• Shrink Tables: Online, in-place table defrag:
• “ALTER TABLE tablename SHRINK SPACECASCADE;” - docs claim cascade is for relatedobjects and optional, but it would not work without it on a stand alone table; but when itdoes work, it works well
• NOTE: Must “ALTER TABLE tablename ENABLEROW MOVEMENT;” first
• Automatic UNDO works!
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10g New Features (cont)
• More Automation: The Automated WorkloadRepository
• Note: AWR runs hourly by default on Win2K;
report is similar to statspack but with more info(even some OS!); claims to be self cleaning
• Very excited about this feature, with newevents, new v$ views and just more info
• We may finally be to the point of being able toknow the database and tune to what we know
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10g New Features (cont)
• Server Based Advisors use the AutomatedWorkload Repository
• Automated Database Diagnostic Monitor: runsas advertised
• Can not yet speak to the value of therecommendations
• New packages are DBMS_ADVISOR andDBMS_SQL_TUNE
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10g New Features (cont)
• Other Automation:
– Automated Shared Memory Management (SGA)
– Self-tuning Checkpointing (fast_start_mttr_target)
• Better Trace Functionality( DBMS_MONITOR )
• Can not yet speak to these new features
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10g New Features (cont)
• RMAN:
– The Block Change Tracking File – a bit map
of all changed blocks – Maintained as part of the redo process;
speeds incremental backups
– Compressed Backup sets ( anecdotal reportsof 80 % compression )
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10g New Features (cont)
• Data Pump:
– An internalized version of EXP and IMP
– Run as a job
– Can detach from the database and check back later on the process; can restart,specify parallelism and support for network mode ops, which use a database link
– Will extract metadata, data or both
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10g New Features (cont)
• Oracle Enterprise Manager:
– Much improved from a speed and stability
standpoint – Middle tier, Oracle Management Server, is
now J2EE
– Wanted to try Database Control, but havenot had time to install the repository
– We saw the demo last month
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Conclusion
• Overall rating: A-
• May change when we go to our production
system (many unusual features used, such as VLM, Partitioned Compressed IOTs and largedependence on parallel processing: BUGS!?)
• Unless otherwise indicated, plan to upgrade inSeptember; motivation is to get off 9.2.0.5
• Questions????