PostgreSQL服务意外关闭

Question

在PostgreSQL 9.2上使用Windows Xp(RAM 4GB)有时数据库服务意外关闭。 我是PostgreSQL数据库中的新手，所以我无法弄清楚它背后的原因，任何人都可以帮助我吗？

1. log 1
2. log 2


当前后端访问配置（pg_hba.conf）

host     all     all     0.0.0.0/0   trust


Postgresql.conf设置

effective_cache_size  =  131072
lc_messages  =  English_United States.1252
lc_monetary  =  English_United States.1252
lc_numeric  =  English_United States.1252
lc_time  =  English_United States.1252
listen_addresses  =  *
log_destination  =  stderr
log_line_prefix  =  %t 
log_timezone  =  Asia/Calcutta
logging_collector  =  on
max_connections  =  10000
max_files_per_process  =  1000
port  =  5432
restart_after_crash  =  on
shared_buffers  =  131072
temp_buffers  =  131072
TimeZone  =  Asia/Calcutta
work_mem  =  1048576