如何启动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/dataexport 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.logpg_ctl: another server might be running; trying to start server anyway
pg_ctl: could not start server
Examine the log output.
[postgres@localhost log]$
因为之前已经启动,所以打印“another server might be running”。此时,查看日志,有如下信息:
[postgres@localhost log]$ cat pg_server.logFATAL: lock file "postmaster.pid" already exists
HINT: Is another postmaster (PID 4491) running in data directory "/opt/postgresql/data"?
[postgres@localhost log]$
当然,最简的启动方式是:
[postgres@localhost ~]$ pg_ctl startserver 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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