如何访问postgresql

postgresql启动数据库服务器(posgres用户)：

[postgres@localhost bin]$ postgres -D /opt/postgresql/data/ > /opt/postgresql/log/pg_server.log 2>&1 &
[1] 4508

当然如果设置了环境变量

PGDATA=/opt/postgresql/data
export PGDATA

后，可使用pg_ctl工具进行启动:

[postgres@localhost log]$ pg_ctl start -l /opt/postgresql/log/pg_server.log
pg_ctl: another server might be running; trying to start server anyway
pg_ctl: could not start server
Examine the log output.
[postgres@localhost log]$

当然，最简的启动方式是：

[postgres@localhost ~]$ pg_ctl start
server starting
[postgres@localhost ~]$ LOG:  database system was shut down at 2011-07-09 13:58:00 CST
LOG:  autovacuum launcher started
LOG:  database system is ready to accept connections

如果要在操作系统启动时就启动PG,可以在/etc/rc.d/rc.local 文件中加以下语句：

/opt/postgresql/bin/pg_ctl start -l /opt/postgresql/log/pg_server.log -D /opt/postgresql/data

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