I have found out that dB option "DDL in transaction" was enabled on this particular database. But when I compared on the other existing databases this option was disabled. What is the purpose of "DDL in transaction"? Is setting this option to TRUE would cause the slowdown of the batch process after server reboot?
DDL in tran would not cause slowdown of the ASE. In fact the batch jobs run slow after reboot is probably because of cache or someone has been playing with the config parameters someof which are static and take effect after reboot. check your .cfg file, the old and the new and see if that is the case.