【PostgreSQL-9.6.3】LOG: unrecognized configuration parameter "dynamic_shared_memory_type"

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本文介绍了当遇到PostgreSQL数据库启动失败，配置文件存在错误时的解决方案。通过使用绝对路径启动命令并调整gmon.out文件权限，成功解决了问题。

报错如下：

输入如下命令启动PG数据库时，报错：

[postgres@drz ~]$  pg_ctl -D /opt/postgresql/data/ start
server starting
[postgres@drz ~]$ LOG:  unrecognized configuration parameter "dynamic_shared_memory_type" in file "/opt/postgresql/data/postgresql.conf" line 127
FATAL:  configuration file "/opt/postgresql/data/postgresql.conf" contains errors

解决方式：

#给启动命令加上绝对路径，问题得到解决
[postgres@drz ~]$ /opt/postgresql/bin/pg_ctl -D /opt/postgresql/data/ start
server starting
[postgres@drz ~]$ LOG:  database system was shut down at 2017-08-11 11:22:34 CST
LOG:  MultiXact member wraparound protections are now enabled
LOG:  database system is ready to accept connections
LOG:  autovacuum launcher started

#如果输入绝对路径启动时像我一样出现gmon.out文件权限问题
[postgres@drz ~]$ /opt/postgresql/bin/pg_ctl -D /opt/postgresql/data/ start
_mcleanup: gmon.out: Permission denied
server starting
_mcleanup: gmon.out: Permission denied
[postgres@drz ~]$ LOG:  database system was shut down at 2017-08-11 11:22:55 CST
LOG:  MultiXact member wraparound protections are now enabled
LOG:  database system is ready to accept connections
LOG:  autovacuum launcher started  

#则要修改gmon.out文件的权限
[postgres@drz ~]$ chmod 777 /home/postgres/gprof/27265/gmon.out

#关闭数据库
[postgres@drz ~]$ /opt/postgresql/bin/pg_ctl stop -D /opt/postgresql/data/

#再次启动数据库
[postgres@drz ~]$ /opt/postgresql/bin/pg_ctl -D /opt/postgresql/data/ start
server starting
[postgres@drz ~]$ LOG:  database system was shut down at 2017-08-11 11:30:30 CST
LOG:  MultiXact member wraparound protections are now enabled
LOG:  database system is ready to accept connections
LOG:  autovacuum launcher started

The End！

2017-09-01