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Topic: Rollback (data management)

	J2EE pathfinder: Persistent data management, Part 1
		Data persistence is one of the trickiest aspects of enterprise development.
		Persistent data is a data structure that preserves its old versions; that is, both previous and current versions may be queried.
		In a persistent data implementation, on the other hand, a system interruption or failure is countered by a "rollback," where the state of the data is rolled back to the last known good configuration.
	www-106.ibm.com /developerworks/java/library/j-pj2ee3.html (3365 words)

	Rollback - Wikipedia, the free encyclopedia
		Rollback was a term used by American foreign policy thinkers during the Cold War.
		Later efforts at rollback would be confined to China and the developing world where they never successfully removed an entrenched communist government, but in some cases such as Guatemala helped overthrow governments that were leaning towards the Soviets.
		The "rollback" movement gained significant ground, however, in the 1980s, as the Reagan administration, urged on by the conservative Heritage Foundation and other influential conservatives, began to channel weapons to anti-communist resistance movements in Afghanistan, Angola, Cambodia, Nicaragua and other nations.
	en.wikipedia.org /wiki/Rollback (588 words)

	Log management: Why we need to look beyond relational databases
		The most immediate issue in log data management is finding that the events can't be inserted into the database as fast as they are generated.
		In log management, however, this strategy backfires because the amount of data being inserted is far greater than the amount of queries against the data.
		Log management solutions must address all of these issues while simultaneously enabling tens of terabytes of event data to be quickly loaded and queried in a cost-effective manner.
	www.computerworld.com /printthis/2003/0,4814,86861,00.html (1251 words)

	Data Management
		The real test as to whether an organisation is using the database approach is whether their systems have as a foundation data structures built solely for the immediate requirements of a particular system or on data structures built to support the overall requirements and objectives of the organisation.
		Data Management is the process of planning, co-ordinating and controlling an organisations data resource.
		Data Administration is concerned with the management of an organisations meta-data (i.e.
	www.comp.glam.ac.uk /pages/staff/tdhutchings/Chapter5.html (6974 words)

	ACI Worldwide - Products - Transactional Data Management
		Because the volume of transactional data is growing exponentially, with 90% of all new information in digital form, businesses must be able to access, analyze, and act on that data faster than ever.
		In most businesses cases, there is no need to move all of the data from one database to another on a constant basis, because not all of the data changes.
		In this setting, transactional data is captured and sent to the data warehouse, and from there, business decision data is captured and delivered back to the transaction processing systems (or to operational data stores).
	www.insession.com /goldengate/default.asp (2211 words)

	CertMag.com Facilitating Efficient Data Management
		Data archiving is a type of data movement that is conducted for entirely different reasons.
		Modern data archival tools are active, meaning they can be set up with rules to trigger the archival process, as well as to automatically retrieve the data if it is accessed again by a query.
		Modern data management software must be able to intelligently monitor, analyze and optimize applications using past, present and future analysis of collected data.
	www.certmag.com /articles/templates/cmag_tools_generic.asp?articleid=963&zoneid=92 (2217 words)

	DATA QUALITY Journal, September 1998, Mathieu and Khalil
		Data quality problems are exacerbated in large organizational databases where data are collected from multiple data sources.
		It is important to note that while database modeling and design and data storage are typically viewed as the province of an Information Technology group, the process of populating the database typically rests with the manager(s) responsible for the business processes that use the data.
		Data quality problems often stem from system deficiencies rooted in poorly documented modifications, incomplete user training and user manuals, or systems that have been extended beyond their original intent.
	www.dataquality.com /998mathieu.htm (4547 words)

	Redo, Rollback and Undo
		Rollback segments store the data as it was before changes were made.
		Because rollback segments are stored in the database buffers, this important recovery information is automatically protected by the redo log.
		The speed of this operation depends only on the amount of data being queried and the number of changes to the data that need to be backed out.
	www.ss64.com /orasyntax/9redo.html (824 words)

	Data Blocks, Extents, and Segments
		In this case, a data block used for this table's data segment is considered unavailable for the insertion of any new rows until the amount of used space in the block falls to 39% or less (assuming that the block's used space has previously reached PCTFREE).
		Among other information, a rollback entry includes block information (the file number and block ID corresponding to the data that was changed) and the data as it existed before an operation in a transaction.
		A rollback segment is always in one of several states, depending on whether it is offline, acquired by an instance, involved in an unresolved transaction, in need of recovery, or dropped.
	download-west.oracle.com /docs/cd/A87860_01/doc/server.817/a76965/c02block.htm (7103 words)

	TDMO - Tech2Tech - Ask The Expert - Terdata Warehouse 8.2
		With the general rollback improvements in recent releases and this change for indexes, rollback operations are now expected to take the same length of time as the update operation.
		New data types, additions to triggers, IN list and identity column functionality allow new magnitudes of data and new applications to be created.
		Data warehouse and analytic-centric features and functions allow applications to be built quickly and deployed widely.
	www.teradata.com /tdmo/v06n03/Tech2Tech/AskTheExpert/TeradataWarehouse8.2.aspx (1538 words)

	IT Management and Software License Management: NOVELL ZENworks 7 Suite
		Novell ZENworks Linux Management is a powerful and secure management solution that provides IT administrators with centralized control over software configurations on Linux servers and workstations.
		User-based management lets administrators manage handhelds by user as well as device.
		ZENworks Data Management ensures that user files and data are always protected, available from any location, and easily recovered in the event that local data is lost—all without administrator intervention.
	www.novell.com /products/zenworks/overview.html (1735 words)

	Module 10 - Managing Undo Data
		ROLLBACK is used to cancel (not commit) a transaction that is in progress.
		Undo data is used to undo any transactions that were not committed at the point of failure.
		DATE data and subtractions of these results in days – converting days to seconds is done by multiplying by 86,400, the number of seconds in a day.
	www.siue.edu /~dbock/cmis565/module10-undo_data.htm (2562 words)

	Rollback Rx — The Enterprise Solution
		Rollback Rx is system restore software is the ideal enterprise solution — because it has all the advantages that a business needs to maintain continuity of work.
		The Rollback Rx Enterprise comprises of three components — the Rollback Rx Enterprise server, the service component, which is the connection between the clients and the administrator console — which means the admin console, and clients’ first log onto a server to interact.
		The Administrator console lets the administrators manage the clients who are connected to the server, performing all the maintenance, fixing computer problems, and recovering data, etc. for them.
	www.articledashboard.com /Article/Rollback-Rx---The-Enterprise-Solution/121979 (676 words)

	Rollback (data management) - Wikipedia, the free encyclopedia
		is a command that causes all data changes since the last
		to be discarded by the relational database management system (RDBMS), so that the state of the data is "rolled back" to the way it was before those changes were made.
		The rollback feature is usually implemented with a transaction log, but can also be implemented via multiversion concurrency control.
	en.wikipedia.org /wiki/Rollback_(data_management) (207 words)

	Test Data Management Software: kSETT
		Test data management software allows QA and IT professionals to access and manage important test documents and testing artifacts such as test programs, test data files, test plans, and summary and status reports.
		The answer is simple, one repository with full management capabilities of versioning, locking, editing, and secured access via the web allows a global team to perform in a cohesive and efficient manner.
		QA and IT professionals know that version controlled and secure data that is available at any time of the day is essential to meeting tight schedules.
	www.softsett.com /test-data-management/test-data-management.jsp (712 words)

	Novell Documentation: ZENworks Linux Management - Additional rug Features
		The command rug rollback reverts software to the state it was in on the date you specify.
		Rollback is by date, but it only affects packages that have been changed using rcd clients.
		The rollback option does not store a complete archive of each package you remove or upgrade, but it increases the amount of disk space used, and increases the time it takes to upgrade or remove software during normal transactions.
	www.novell.com /documentation/zlm/zlm66admin/data/bs7wovi.html (745 words)

	Oracle - Addition of Rollback Segments - undo sql create rollback database tablespace
		Under pre-9i versions and in 9i with manually managed undo, ROLLBACK segments can be placed in any tablespace, but it is suggested that they be placed in a tablespace that contains only other rollback segments.
		Rollback segments can be PUBLIC, which means that for a multi-instance database, any instance can use the rollback segment, or PRIVATE, which means only the instance that has the rollback segments named in the ROLLBACK SEGMENTS clause of its INIT.ORA file can use the rollback segment.
		The Oracle system will automatically assign an UNDO tablespace with locally managed, auto-allocated extents; the maximum size will be set at approximately one and a half times the specified size.
	www.praetoriate.com /t_ault_28_segments_sql_rollback.htm (436 words)

	TigerLogic FastSOA for Complex SOA Transactions
		Alternatively, data or services can be cached behind the mid-tier application in which case, requests go to the mid-tier application, which then goes to the cached data or service rather than the legacy RDBMS or enterprise service.
		Data is cached in native XML format either in memory or on disk.
		The data cache sits with mid-tier applications and either caches the incoming data for the applications or the outgoing response to the consumer.
	www.rainingdata.com /products/soa/fastsoamidtier/index.html (961 words)

	Rollback
		Satellite data revealed that industrial gases are the primary factor in depletion of the ozone layer, which scientists fear might spread over northern areas; and satellites also provided the most precise data yet available on rise of the sea level, showing it to be within the range predicted by global warming models.
		The data had been a "significant element" in industry campaigns to bar regulation, the report observed.
		The book, they say, "gathers data from many fields -- including cognitive neuroscience, developmental psychology and speech therapy -- to demonstrate that the roots of language are in our genes," which again will come as a great shock to everyone who thought that humans were indistinguishable from rocks and birds.
	www.zmag.org /chomsky/articles/rollback.html (16105 words)

	rollback - OneLook Dictionary Search
		rollback : The American Heritage® Dictionary of the English Language [home, info]
		Rollback : Deardorff's Glossary of International Economics [home, info]
		Rollback : Glossary of Trade and Shipping Terms [home, info]
	www.onelook.com /cgi-bin/cgiwrap/bware/dofind.cgi?word=rollback (179 words)

	Borland Data Provider (BDP) for the Microsoft.NET Framework
		Data Explorer is integrated into the C#Builder IDE and also is available as a standalone executable.
		I wanted only to know the general conception of the new data provider, so for me was this article very useful.
		This is the Borland\'s way to do data connections, and it is right of course, but why do not give support for DBMS already included in the DBExpress tecnology, for Example Informix, a very important DBMS, in witch a lot of Enterprise have made a lot ofinvestiment.
	dn.codegear.com /article/31939 (3782 words)

	Information for the Database Administrator : Enabling the Rollback Log (Site not responding. Last check: 2007-10-25)
		When you enable rollback, you must be sure that the Rollback Log (database File 8) and the Update Log (database File 7) are allocated.
		With rollback enabled, the SYSTEM 2000 software can roll back the database to its status just prior to the sequence of commands that triggered the error.
		Errors could arise from security violations or from bad data, for example, data that do not match the SAS informat or that have too many significant decimal places for a specific item's numerical precision.
	www.okstate.edu /sas/v7/sashtml/books/acess2dm/z1010896.htm (252 words)

	Data Center Management IT Reports, Webcasts and White Papers (Site not responding. Last check: 2007-10-25)
		Frequency ramping has given way to multi-core processors, which provide data centers with improved application performance and decrease the power needed to drive the data center.
		Data center space and power requirements are often pushed to the limit because so much hardware is needed to maintain service levels.
		Network availability and data access are essential parts to the corporate value chain, which puts data centers at the helm of daily operations.
	cramsession.bitpipe.com /rlist/term/Data-Center-Management.html (681 words)

	The Blog \| Jay Rosen: Rollback \| The Huffington Post
		Press rollback, the policy for which McClellan signed on, means not feeding but starving the beast, downgrading journalism where possible, and reducing its effectiveness as an interlocutor with the President.
		In switching from news management (think Gergen) to roll back (think John Ashcroft) the Bush Team was recognizing certain weaknesses in its adversary.
		I should add that rollback intersects with trends in journalism that, as Tom Rosenstiel notes, are promoting a "journalism of assertion" (cheap, easy, safe) over the discipline of verification (expensive, hard, and certain to spur more attacks as the culture war wears on.)
	www.huffingtonpost.com /theblog/archive/jay-rosen/rollback_4257.html (5883 words)

	Transaction Management
		The internal transaction table for the associated rollback segment records that the transaction has committed, and the corresponding unique system change number (SCN) of the transaction is assigned and recorded in the table.
		Oracle undoes all changes made by all the SQL statements in the transaction by using the corresponding rollback segments.
		Then, if a function fails, it is easy to return the data to its state before the function began and reexecute the function with revised parameters or perform a recovery action.
	www.mscd.edu /~ittsdba/oradoc817/server.817/a76965/c15trans.htm (2191 words)

	RollBack Rx Professional - Free Software Downloads and Software Reviews - Download.com
		RollBack Rx Pro is a PC protection utility that represents advancement in technology that has never before been available in protecting computers from viruses, users or system problems.
		RollBack Rx allows computer users, regardless their skill levels, to easily and quickly repair their computer problems in seconds.
		RollBack Rx Professional benefits: non-restrictive hard drive protection; low system resources used; no partitioning required; straightforward Windows critical updates support; seamless integration with all AV updates; reboot independent--flexibility to restore minutes, hours, even months later.
	www.download.com /RollBack-Rx-Professional/3000-2248_4-10499443.html (234 words)

	Transaction Management
		Oracle has generated rollback segment records in buffers in the SGA that store rollback segment data.
		Oracle undoes all changes made by all the SQL statements in the transaction by using the corresponding undo tablespace or rollback segment.
		Then, if a function fails, it is easy to return the data to its state before the function began and re-run the function with revised parameters or perform a recovery action.
	www.stanford.edu /dept/itss/docs/oracle/9i/server.920/a96524/c17trans.htm (2650 words)

	Recovery Process Needs Rollback Planning
		Whitepaper: Managing Data, Voice, and Converged IP networks Many companies are adding capabilities such as VoIP, IP telephony, conferencing, data integration, and rich media to their networks.
		To explain, a rollback plan is a recovery plan that aims at returning the system to its last known good state.
		If the change is allotted one hour and the rollback plan would take 15 minutes, then between 40 and 45 minutes into the change, the engineers must actively decide whether to push ahead and finish, or to execute the rollback plan and restore the system to the last known good state.
	itmanagement.earthweb.com /netsys/article.php/3497886 (1331 words)

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