I was running a script to create a bunch of tables and data and the postmaster service stopped and it now seems that the database is corrupted. The postmaster service won't start. Is there anything I can do to get it up and running again? Here's some of the postmaster log file:

LOG: startup process (PID 2476) was terminated by signal 11
LOG: aborting startup due to startup process failure
LOG: shmdt(0xd00000) failed: Invalid argument
LOG: database system was interrupted while in recovery at 2005-02-15 15:06:02 EST
HINT: This probably means that some data is corrupted and you will have to use the last backup for recovery.
LOG: checkpoint record is at 0/142D84B0
LOG: redo record is at 0/142D2D80; undo record is at 0/0; shutdown FALSE
LOG: next transaction ID: 968433; next OID: 193951
LOG: database system was not properly shut down; automatic recovery in progress
LOG: redo starts at 0/142D2D80
LOG: startup process (PID 2476) was terminated by signal 11
LOG: aborting startup due to startup process failure