IBM has announced a 64-bit version of its DB2 Universal Database data management platform for the zSeries eServer mainframe-class system.
Called DB2 UDB v8 for z/OS, the database is tuned for the z990 mainframe system, codenamed T-Rex.
"It's the largest feature and function release ever in our history," reaffirming IBM's commitment to improving DB2 for mainframes, said Tom Rosamilia, IBM vice-president of worldwide data management development.
Version 8 of IBM DB2 has more than 100 new or enhanced features focused on performance, scalability, continuous availability, application porting and security.
These features take advantage of the z/OS operating system and the zSeries architecture. The 64-bit capability in the database enables applications to run faster and increases potential address space from 2 gigabytes to 16 exabytes.
64-bit virtual storage enables one large virtual space, rather than a number of smaller hyperspaces and data spaces in addition to the address space, IBM said. Database buffer pools can be placed into memory so there is no need to go out to the disc.
Enhancements to SQL for OLTP applications and long names support in the database catalogue enable Unix and Windows applications to be ported more easily to DB2 on the mainframe, IBM said.
Support is also boosted for XML, SQL and Java. The database uses a feature of T-Rex in that Java-based data can be converted to Unicode data format for multi-language support.
Other improvements include Online Schema Evolution, which enables altering of the database on the fly without service disruption, and Multilevel Security, enabling a single image of data to be shared by multiple enterprise departments with mixed security levels.
"Online Schema Evolution says that while the database is running, I can change things in the database so it provides continuous availability," Rosamilia said.
DB2 UDB v8 for z/OS is expected to ship later this year or early 2004.