Exadata - Oracle DB Long running Transactions

Issue #:

 We faced long running transaction for the below query on 14th of Jan 2020. Which resulted in error being returned. Similar such events have occurred intermittently 74 times over a period of 30days. Which has resulted in appointment errors.

Could you please check whether the query needs to be tuned or indexing is required.

 Analysis:

1.       We need to do stats gathering explicitly on tables every day. I can see stats gathered last month.

2.       Check with Developing team whether they have planned for partitioning on table because I don’t see any partitions and table size is more than 800GB.

3.       Request Developing team to plan for partition on this table for permanent solution.

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