The problem of OSB DBadapter connecting to Oracle EBS using the same session

When OSB uses DBadapter to connect to Oracle EBS, multiple interface services will use the same session of EBS, resulting in abnormal data when calling the package. The specific analysis is that the same session causes initialization abnormality. When the first package is not finished, the initialization of the second package Overrides the initialization of the first package, causing the first to run abnormally. How to solve the problem that multiple interface services will use the same session.