In a recent project we migrated an Oracle database previously running on 12.1.0.2 on an Oracle Database Appliance to an Exadata X8 with DB version 19.7. Shortly after the migration a merge-statement (upsert) failed with an ORA-07445: exception encountered: core dump [kdu_close()+107] [SIGSEGV] [ADDR:0xE0] [PC:0x1276AE6B] [Address not mapped to object] [] The stack looked as follows: kdu_close – updThreePhaseExe -…
In this blog post, I would like to share with you a weird issue I faced when I implemented a sliding Windows partition scenario on SQL Server 2014 SP1 at one of my customer. The idea was to keep SQL Server audit records from several SQL Server instances into a global archiving table during two years in order to meet…
This time let’s talk about an interesting customer scenario where table partitioning was implemented on a table with 100 GB of data on SQL Server 2014. Partitioning in this context aimed to save disk space (archive data were compressed) , help to reduce maintenance time and consumed resources as well (by using index and statistic maintenance operations on the active partition). Finally,…
