I changed the length of table names in PostgreSQL in the file
C:\Program Files\PostgreSQL\9.1\include) to 128. Then I reloaded the new configuration by selecting menu "Reload Configuration" under the menu PostgreSQL 9.1 in start menu. Also, I restarted the PostgreSQL. But the change did not take effect. Length of table names in my database still has the limit 64 characters.
How to solve this problem? I am using PostgreSQL 9.1 on Windows 7 Professional.