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Cost of query increased drastically post data base upgrade from 10g to 11g

edited Feb 1, 2013 8:21PM in Database Administration (MOSC) 6 commentsAnswered
We upgraded the database from 10g to 11g, after which the seeded tables (HZ_CUST_ACCOUNTS, HZ_CUST_ACCT_SITES_ALL, HZ_PARTIES, CSI_ITEM_INSTANCES) is showing full table scan, hence query is taking lot of time and consequently Form gets hang. Have tried by running ANALYZE TABLE <TABLE_NAME> COMPUTE STATISTICS and have also tried running 'Gather Schema Statistics' with estimate percent first 30 and then 10 again. Please suggest how this can be resolved. Thanks in advance!

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