User Guide

SAP AG November 2002
UPDATE statement to create at least one additional row that satisfies the search condition. If
S is subsequently re-executed within T1, the set of read rows will differ from M.
SAP DB Version 7.4
Development of the independent SAP DB software was begun in 1997 on the basis of version
6.1. Since then, SAP AG has significantly further developed and improved the SAP DB
technology. The most important parts of the original software package have been completely
redesigned and integrated into the SAP DB software. In this way, SAP DB meets the
for a modern database system.
requirements [See SAP DB Library]
120
SAP DB Improvements Since 1997 [Page
]
•
SAP DB Tools [Page
120]
•
Technical Specification of SAP DB Version 7.4 [Page
121]
•
Improvements in SAP DB Version 7.4 [Page
122]
•
SAP DB Improvements Since 1997
• Optimized checkpoint handling
• Parallel creation of indexes
• Parallel backup and restore
• Optimized locking and logging
• Better handling of “log full” and “database full” errors
• Interactive support for the restore process
• Reduced converter cache size (factor 10)
• Improved monitoring and diagnostics
• Unicode support (UTF-16)
• Support for the Linux operating system
• 64 bit UNIX versions as operating system platform
• New database tools
SAP DB Tools
Database Management
You can use the Database Manager to manage databases. You can use the following
clients:
• Database Manager GUI (DBMGUI) on Windows-based operating systems
• Database Manager CLI (DBMCLI)
• Web DBM
User Manual: SAP DB 120