Out of Memory Issue while Selecting a dataset

Hello Experts,

I'm trying to a perform a Join between two tables...Let's say Table A and Table B in a SQL Script as shown below:

it_tab = SELECT A.KUNNR, A.VKORG, A.VTWEG, A.PARVW, A.PERNR,B.MATNR

FROM  <schema_name>.A

           <schema_name>.B

WHERE A.VKORG =  B.VKORG and A.VTWEG = B.VTWEG and A.MVGR1 = B.MVGR1

GROUP BY A.KUNNR, A.VKORG, A. VTWEG, A.PARVW, A.PERNR, B.MATNR;

and later I want to insert this dataset into a Physical Table as shown below:

INSERT into <schema_name>.C select * from :it_tab; 

During the execution of the Procedure, it throws the following error:

GenericFailure exception: column store error: search table error:  [9] Memory allocation failedPlease check lines:

Definitely the ResultSet is huge and hence it's not possible to hold.

Is there any way to handle this ?

It would be really great, if you can let me know of any way.

Thanks & regards,

Jomy