Execution of Test Case which include datasource(Oracle) test step is not working at test case level.

Hello Team,

Currently one of my project I am using Ready Api and got an issue with Execution of Test Case.

Issue:

I have one Test case>

Test Step>  TestDataSource(getting data from Oracle DB)

 My query returns 20000 records from Oracle Db , when I execute only my data source step than I am getting all 20000 records which are present in Oracle Db, but when I am executing whole test case than my test step is returning only one record.

Please let me know if Ready api is having any known issue which is not supported by Ready api.