Hello,
I think deleting old users is not a permanent solution for this issue, as mentioned earlier you should identify the problematic queries and you should start tuning those queries, moreover as mentioned earlier for problematic queries you need to check that whether stats are properly collected or not, furthermore you can view for product joins, data skewness, poor index selection and poor sql writing. Reading explain plan and then performing the required actions will be helpful in this regard.
Thanks.
Hello,
I think deleting old users is not a permanent solution for this issue, as mentioned earlier you should identify the problematic queries and you should start tuning those queries, moreover as mentioned earlier for problematic queries you need to check that whether stats are properly collected or not, furthermore you can view for product joins, data skewness, poor index selection and poor sql writing. Reading explain plan and then performing the required actions will be helpful in this regard.
Thanks.