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  04.11.2012Page 1 of 11  SAP Note 820824 -FAQ: SAP MaxDB/liveCache technology  Note Language: EnglishVersion: 51 Validity: Valid Since 12.01.2011 Summary Symptom  This note contains questions that are frequently asked by SAP employees andcustomers. It provides answers and refers you to other information sources.The note is in no way complete.1.Where do I find the MaxDB documentation?2.Under which component must I open a customer message if I haveproblems with MaxDB or the liveCache?3.What MaxDB versions are currently supported?4.How can I interpret the MaxDB version string?5.What information is relevant for support in the last nine charactersof the version string after the build number?6.What combinations of MaxDB, R/3 system and operating system may I use?7.Can MaxDB run in a virtual environment?8.Where do I find information about new MaxDB features?9.What interfaces are supported by MaxDB?10.Are there any limits on the size and the number of users of a MaxDBdatabase?11.Must I reorganize a MaxDB database?12.Where do I find more information about MaxDB administration?13.Where will I find information about migrating a database system to thetarget MaxDB?14.Where will I find information about the MaxDB installation andupgrade?15.Where will I find information about the installation or upgrade ofMaxDB client software?16.How do I install a DBADASLIB patch?17.Where will I find tips for configuring a MaxDB?18.Does MaxDB support clusters for failover on UNIX or Linux?19.Where can I find information about MaxDB High Availability?20.Can I use the split-mirror and snapshot functions available inthird-party storage systems with MaxDB?21.What log files are available for MaxDB?  04.11.2012Page 2 of 11  SAP Note 820824 -FAQ: SAP MaxDB/liveCache technology 22.Where do I find the MaxDB log files?23.How can I locate the run directory?24.Where do I find explanations for MaxDB error codes?25.Where will I find information about MaxDB parameterization?26.What is MaxDB load balancing?27.How do I make a MaxDB system copy?28.Why are there so many VSERVER processes?29.Can I execute transports between databases of different releases?30.Where do I find information about the external backup tools supportedby MaxDB?31.What performance analysis tools are available for MaxDB?32.Where will I find information about MaxDB database logging?33.Where do I find information about hot standbys?34.What effects does a change of the system time (for example, fromdaylight saving time to standard time) have on the MaxDB database?35.The standard installation does not include the MaxDB Web Tools. Howcan I get the MaxDB Web Tools?36.How do I install SQL Studio and the database manager GUI?37.What training does SAP offer for MaxDB?38.Are there any additional FAQ notes about MaxDB?39.Are there How-To descriptions for MaxDB topics?40.Where do I find more information about MaxDB? Other terms Frequently asked question (FAQ), time conversion, daylight saving time,DUAL core, central processing unit (CPU), MAXCPU, data volume Reason and Prerequisites This note answers questions about the use of MaxDB in OLTP (OnlineTransaction Processing) and BW (SAP Business Information Warehouse)systems.Further FAQ notes for MaxDB/live Cache are available in the SAP DeveloperNetwork (SDN):https://wiki.sdn.sap.com/wiki/x/GkM. Solution 1.Where do I find the MaxDB documentation?  04.11.2012Page 3 of 11  SAP Note 820824 -FAQ: SAP MaxDB/liveCache technology See Note 767598 for information about the location of the MaxDBdocumentation.If you are searching for a specific term in the MaxDB documentationand you do not know which guide contains the relevant information, werecommend that you use the MaxDB glossary in the documentation. Theterms are sorted in alphabetical order. If you do not find therequired term in the glossary, open a customer message on SAP ServiceMarketplace for the BC-DB-SDB component so that the term can beincluded in the glossary.2.Under which component must I open a customer message if I haveproblems with MaxDB or the liveCache?BC-DB-SDB: For problems with the MaxDB OLTP database or a contentserver.BC-DB-SDB-CCM: For problems with the MaxDB transactions DB12,DB13,DB50,DB59 RZ20,RZ21,ST04BC-DB-SDB-INS: For problems with the MaxDB installation.BC-DB-SDB-UPG: For problems with the MaxDB upgrade.BC-DB-LVC: Problems with the liveCache (with the same subcomponents as BC-DB-SDB)BW-SYS-DB-SDB: For problems in the Business Warehouse system withMaxDB.3.What MaxDB versions are currently supported?You will find this information in Note 1020175 (FAQ: MaxDBinstallation, upgrade or applying a patch).4.How can I interpret the MaxDB version string?Importance for Version 7.5 or lower, for example kernel version 7.5:7.5.0 Build 026-123-094-430Major Number: 7Minor Number: 5Correction Level: 0Build Number: 026Support Information: 123-094-430The interpretation of the MaxDB/liveCache version string changes withMaxDB Version 7.6.Importance for Version 7.6 or higher, for example kernel version 7.6:7.6.01 Build 020-123-115-206Major Number: 7Minor Number: 6Support Package: 01Patch level: 20 (Build Number)Support Information: 123-115-206As of Version 7.6, a model was introduced with Support Packages and  04.11.2012Page 4 of 11  SAP Note 820824 -FAQ: SAP MaxDB/liveCache technology patch levels.Support Packages:- are created on a quarterly basis (approximately)- in addition to the error corrections, Support Packages also includenew functions (change requests).Patch levels:- are created more often than Support Packages and according torequirements (error situation),- only high priority errors are corrected,- Corrections for delivered versions always result in a new 'Patch Level'.5.What information is relevant for support in the last nine charactersof the version string after the build number?The last nine characters of the MaxDB version string containadditional information for Support.Example: 7.6.01 Build 020-123-115-206After the patch level (for example, 020), the release status (forexample, 1), the make status (for example, 2) and the usage (forexample, 3) are specified.a) The release status specifies whether the version used has a testlevel or development level (value=0), or whether it is of a level thatcan be used productively (value=1).b) The make status specifies in which delivery status the createdversion is contained.-> Value=0: A version that was created based on a development level(DEV). Customers should not use such versions in productiveenvironments.-> Value=1: A version that was created based on a correction level(COR). Customers should not use versions of this kind in productiveenvironments.-> Value=2: A version that was created based on an official deliverylevel (RAMP). As a rule, this should be the case in the productivesystem.-> Value=3: This is a HotFix.-> Value=4: This is a special analysis level that should be used foranalysis purposes only. Customers should not use such versions inproductive environments.c) The usage specifies for which system environments this version wascreated.-> Value=0 there is no special usage.-> Value=1 This version was created for OLTP systems only.-> Value=2 This version was created for the liveCache only.-> Value=3 This version was created for all system types and can beused anywhere.The following six characters (for example 115-206) are significant forMake Factory colleagues. They specify the change list number. Thisnumber uniquely identifies the underlying module amount and module

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