I had postgresql 8.4 in centos system. Aadditionally I needed postgresql 9.3. I want new version, But excute 8.4 version instead 9.3 version.
How can I change default version?
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Your package manager may provide several versions, for instance:
yum install postgresql-8.4 yum install postgresql-9.3
Try using the tab key after "postgresql" to autocomplete the package list or look at the yum doc.
Then they may be accessible form the service command:
service postgresql start 8.4 service postgresql stop 9.3