WARNING: out of shared memory

Hi All -

I have been trying to drop 2000 tables using a script. I am
getting the following error message. I have the value set
for max_locks_per_transaction = 100 . Error message is as follows

WARNING: out of shared memory
ERROR: out of shared memory
HINT: You might need to increase max_locks_per_transaction.

********** Error **********

ERROR: out of shared memory
SQL state: 53200
Hint: You might need to increase max_locks_per_transaction.

appreciate your help

regards