Patent ID: 11971890
Assignee: OCIENT HOLDINGS LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 10:
11. A database management system comprising:
a memory;
a processing circuit that operates in conjunction with the memory to:
create an initial execution plan of a query;
execute a first query optimizer configured to utilize the initial execution plan as input to generate a first execution plan for the query;
execute a second query optimizer concurrently with execution of the first query optimizer to utilize the initial execution plan as input to generate determine a second execution plan for the query;
select a first lowest cost execution plan from the first execution plan and the second execution plan;
wherein the first query optimizer is further configured to utilize the first lowest cost execution plan as input to generate a third execution plan for the query;
wherein the second query optimizer is further configured to utilize the first lowest cost execution plan as input to generate a fourth execution plan for the query; and
wherein the processing circuit is configured to select a second lowest cost execution plan from the first lowest cost execution plan, the third execution plan, and the fourth execution plan.