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The steps and the tools shown in the image are as follows:
Put plans into the PLAN table - ttOptSetFlag
Prepare command - SQLPrepare
Examine PLAN table - SELECT * FROM SYS.PLAN
Set various optimizer hints - ttOptSetFlag
Prepare command again - SQLPrepare
Examine PLAN table - SELECT * FROM SYS.PLAN
Repeat steps beginning with "Set various optimizer hints" until plan is fully optimized.