No More Log RBA Resets! DB2 11's Extended RBA and LRSN Support

Project and Program: Information Management, Database

Tags: Proceedings , SHARE in Anaheim 2014 , 2014

DB2 has used a 6 byte value for the log Relative Byte Address (RBA) since DB2 Version 1.   Resetting the log RBA when the range is exhausted has been a major pain point for customers.  DB2 11 solves this problem by expanding the RBA range by a factor of 4 billion.  The 6 byte Log Record Sequence Number (LRSN) used by DB2 data sharing groups is also extended, though not quite in the same way as the log RBA.  
The technical lead for DB2 11's expanded RBA and LRSN support will discuss the changes done to provide this support, the external differences and what an installation needs to do migrate to larger log RBA and LRSN.-Dave Levish-IBM Corporation

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