如何将PostgreSQL从8.4版升级到9.4版？

这就是我解决问题的方法.

在Centos中将POSTGResql 8.4升级到9.4

1. Yum Install PG9.4
 2. wget http://yum.POSTGResql.org/9.4/redhat/rHel-6-x86_64/pgdg-redhat94-9.4-1.noarch.rpm
 3. yum install pgdg-redhat94-9.4-1.noarch.rpm
 4. yum install POSTGResql94-server
 5. service POSTGResql-9.4 initdb
 6. chkconfig POSTGResql-9.4 on

资料备份

7. su - POSTGRes

 8. pg_dumpall > dump.sql

恢复数据

9. service POSTGResql stop

 10. service POSTGResql-9.4 start

 11. su - POSTGRes

 12. psql < dump.sql

配置网络访问

vi /var/lib/pgsql/9.4/data/POSTGResql.conf

1. Listen_addresses = '*'
 2. port = 5432

/var/lib/pgsql/9.4/data/pg_hba.conf

# "local" is for Unix domain socket connections only
local   all         all                               IDent
# IPv4 local connections:
host    all         all         127.0.0.1/32          IDent
host    all         all         130.51.79.0/24        md5
host    all         all         10.210.29.0/24        md5
# IPv6 local connections:
host    all         all         ::1/128               IDent

删除PG8.4

1. yum remove POSTGResql
 2. ln -s /usr/pgsql-9.4/bin/psql /usr/local/bin/psql