How to delete all the PSA data in one go

Hello Guys,

I want to clear all the data from all the PSA tables at one shot, how can i do this??

I have tried following things:

1) I have gone to PSA root node and right click and then clicked on delete PSA data, but its showing me all the datasources and when i am executing that, it is deleting one by one(that i means i need to select individual datasource, which i do not want).

2) Above specified step runs RSPSADEL1 in background , so i doubt whether it deletes psa data only or complete Table?

3)I got the info from other posts that there is a fm which is RSATREE_PSA_DELETE_BATCH, but i need to make myself clear whether this fm deletes only data or complete Table?

I am using sap-bw 3.5.

Regards,

Dolly