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poor performance after expdp

edited Dec 3, 2016 4:00AM in SQL Performance (MOSC) 7 commentsAnswered

Hello,

I notice poor sql query performance after schema export by expdp. I have oracle 12c with two databases(CDB and non-CDB). This issue occurs only on CDB architecture.

so...when i run the same query before expdp the execution time is about 10sec, after expdp - on the same schema, data etc. then this time is increased to 30-60sec.

I have just only 8gb RAM on this server(Windows Server 200 R2 Enterprise). Memory is divided by following:

non-CDB

memory_max_target                    big integer 2304M

memory_target                        big integer 2304M

parallel_servers_target              integer     32

pga_aggregate_target                 big integer 0

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