Dbvisit Overview 1

• Dbvisit Software Ltd. Overview
• Dbvisit Standby
• Dbvisit Replicate
• Customer Successes
• Q & A www.dbvisit.com
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• Oracle Gold Partner
• Product engineers and technical support are Oracle database gurus
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Regular presenters at Oracle events, User Groups, etc.
• Developer of the Dbvisit Standby product
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The global leader in disaster recovery solutions for Oracle SE
• 300+ Customers in 60+ Countries
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First product shipped in 2006 www.dbvisit.com
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• A fully featured disaster recovery solution
• Failover
• Graceful switchover
• Automatic creation of standby instance
• RAC, ASM, OMF
• Compression, secure, monitoring, encryption
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Dbvisit Standby - Overview Diagram www.dbvisit.com
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• Primary database Contains production data that must be protected against any kind of loss
• Standby database Copy of production database that can be brought online to become the production database
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• Users can be transferred to the standby database (with limited downtime) when main database has a major outage
End Goal: Business Continuity
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Primary Server
Standby Server
Production
Database
Dbvisit Standby consists of 2 independent processes:
⁃ On the primary server
⁃ On the standby server
Redo
Redo
Archive log
Archive log
Redo
Archive log
Archive log transfer
Archive log
Archive log
Archive log
Archive log
Standby
Database
Dbvisit Standby process on primary server
Dbvisit Standby process on standby server www.dbvisit.com
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www.dbvisit.com
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• Enterprise Edition to Standard Edition (no EE Options)
• Standard Edition
• Standard Edition One
• Standard Edition with RAC
• Cloud deployment (e.g., Oracle on Amazon EC2)
• Workgroup Server
• XE
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• Oracle database
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8i to 11gR2
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32 and 64 bit
• OS and storage
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Windows: NT4, 2000-2008, XP, Vista, Windows 7
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Linux: Intel, AMD, Itanium, and PPC
Unix: AIX, HP-UX, Solaris
Oracle ASM
Oracle Fail Safe
Oracle OMF
Oracle RAC
Microsoft Cluster Server
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• Reporting Database: offset load from primary
• Shadow environment: bug investigation, etc.
• Capturing snapshots: rollback overnight batch
• Test environments: capture snapshots for testing
• Offload backups: move backups to standbåy
• Planned outages: minimize downtime during maintenance
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• Manual Scripting
• Lacks documentation, support, upgrades
• No guarantee all contingencies considered
• Not user friendly, no reports,
• Double Take
• Copies data blocks – not transaction aware
• No protection against database corruption
• No reporting of time delay
• Ok for file systems, could be used with Dbvisit
• Oracle Data Guard – Requires Enterprise Edition
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Case Study: Pythian
“We chose Dbvisit because we could trust it to perform every time.”
- Alex Gorbachev
Chief Technology Officer www.dbvisit.com
• Oracle Platinum provider of services for database and application software
• 140 worldwide customers
• Recognized experts in Oracle database operations and management
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2011 Oracle Titan
Award winner
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• Comprehensive, high performance Oracle data replication
• Real time alternative to GoldenGate and Streams
• Uses wizards to install and configure
• Share, migrate, and offload data
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Designed for both Standard Edition and Enterprise Edition
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Complete documentation and customer support
Ongoing upgrades www.dbvisit.com
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• Replicates both:
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DML (data changes)
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DDL* (structure changes)
* Not all DDL is supported (ie create tablespace is not supported)
• Low latency, low overhead, low cost
• 2- and 3-tier architecture
• 1-way and 2-way replication
• Very simple to very complex replication topologies supported
• Uses efficient redo log-based Change Data Capture
• Uses its own internal redo log mining technology
• Full error capture and conflict resolution built-in
• Robust notification capabilities www.dbvisit.com
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Dbvisit Replicate Comparison
COMMIT TYPE
FEATURE
ENTERPRISE EDITION NEEDED
MYSQL and SQL SERVER TARGET
ORACLE CROSS PLATFORM
LOB support
SETUP WIZARD
OFFLOAD/DOWNSTREAM MINE
CONFLICT RESOLUTION
SCALABLE/ROBUST
COST EFFECTIVE
DBVISIT REPLICATE
Optimistic commit.
Does not wait for commit before applying
No
Yes
Yes
Coming end Nov11
Yes
Yes
Yes
Yes
Yes
GOLDEN GATE
Waits for commit before applying
No
Yes
Yes
Yes
No
No
Yes
Yes
No
STREAMS
Optimistic commit.
Does not wait for commit before applying
Yes
No
Yes
Yes
No
Yes
Yes
No
No www.dbvisit.com
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• Mine
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Converts Oracle redo log data into PLOG data
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One or many Mine processes per each Replicate process
• Apply
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Converts PLOG data into target DB native SQL
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One or many Apply processes per each Replicate process
• Fetcher (optional)
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Offloads Mine process from primary onto intermediary server
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One or many Fetcher processes per each Replicate process
• PLOG
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Parsed logs – binary files specific to Dbvisit Replicate
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Platform independent www.dbvisit.com
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Dbvisit Replicate Flow: 2-Tier
PLOG www.dbvisit.com
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Dbvisit Replicate Flow: 3-Tier
(Fetcher process added)
FETCHER
PROCESS
PLOG www.dbvisit.com
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Dbvisit Replicate Value Proposition
• Significantly lower Oracle technology costs
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No need for additional Oracle technology licenses and ongoing support bills
• Shortened project timelines
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Installation and configuration wizards make this possible
• Avoid more expensive alternatives
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Lower overall TCO due to faster installations, setups, and changes
• Responsive software company
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We listen to our customers and enhance the software to fit best practices
• Continuity of business operations
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Data is current, accurate
• Less stress on IT
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More time for proactive measures
Less time needed for rework and bandaiding www.dbvisit.com
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• Plan in-house test for Dbvisit Replicate
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Schedule resources
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Involve Dbvisit and Partners from start to finish
• Download software
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Full use version of software
Includes all documentation
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Includes full customer and technical support
• Complete test
• Summarize findings collaboratively with Dbvisit development staff and Dbvisit Partner
• Purchase software and support
• Run www.dbvisit.com
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www.dbvisit.com
www.dbvisit.com
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