TKPROF output -- high current gets for INSERT
- From: sat0789@xxxxxxxxxxx
- To: "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 30 Dec 2004 00:09:04 -0800
Hello,
We are running a ETL process through informatica. This process is
running 4 concurrent sessions into a single partition of a fact table.
I have freelists and initrans set appropriately. There is a db trigger
at a statement level for this table which does "alter session
skip_unusable_indexes = true". Bitmap indexes on FK'S for that
partition is made unusable before we run the insert stmt.
There are 13 refrential integrity constriants for this fact table that
are enabled during this insert operation..
With this as input..can someone please shed some light on why i am
getting so many current gets...for eg tkprof output has
Execute 1175 23.09 23.22 10(disk) 3616(query)
1092396(current) 56400 (rows)
curious as to why there are 1 mill current mode buffer gets for 56K
rows.
Since there are no indexes to be updated, is the referential integrity
and db trigger the main cause for this current gets ? If so can someone
explain please..
Waits are as follows..
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total
Waited
---------------------------------------- Waited ----------
------------
SQL*Net more data from client 5269 0.00
0.17
SQL*Net message to client 586 0.00
0.00
SQL*Net message from client 586 2.80
1192.99
db file sequential read 10 0.00
0.02
latch free 1 0.00
0.00
Any help in improving this insert would be appriciated..
thanks.
Sat
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