Database Administration (MOSC)

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Enormous REDO generation

edited Jun 8, 2009 5:43AM in Database Administration (MOSC) 6 commentsAnswered
The system generates enormous redo logs. The main operation of the system is huge inserts to partitioned table. During 15 mins 29G data was loaded, 17G Redo was generated. According to the documentation - no reason to generate so much redo: No force logging, table is NOLOGGING, INSERT is with append hint - from SELECT (from external table), no indexes, triggers on the table, no material views. Any ideas what could cause so much REDO?

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