executeSQLScript maximum allowable character vector length error

I am trying to run an sql script which has approximately 2,000 lines and approximately 100,000 characters with the executeSQLScript function

executeSQLScript( DB_conn , "script_name.sql" ) 

and i get the error

Error while executing the SQL script: SQL script exceeds maximum allowable character vector length.

Is there a way to increase the allowed character vector length for sql script that can be run using executeSQLScript ?

Thanks,