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46 lines
1.6 KiB
46 lines
1.6 KiB
10 years ago
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---
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layout: post
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title: "psql FATAL: database files are incompatible with server"
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author:
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display_name: sipp11
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login: sipp11
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email: sipp11@gmail.com
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url: ''
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author_login: sipp11
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author_email: sipp11@gmail.com
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date: Jan 23, 2015
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tags:
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- postgres
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- error
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---
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Once in a while you might see this error.
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LOG: skipping missing configuration file "/usr/local/var/postgres/postgresql.auto.conf"
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FATAL: database files are incompatible with server
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DETAIL: The data directory was initialized by PostgreSQL version 9.3, which is not compatible with this version 9.4.0.
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### Why?
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Basically it meant that you somehow upgraded postgresql server. All your data was safe, yet it would never work with new server until you upgraded the data.
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### Solution
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1. Figure out what version both old and new one are. As example above, older is 9.3 and 9.4 for new one.
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2. Move your existing data to another directory
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$ mv /usr/local/var/postgres /usr/local/var/postgres9351
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3. Initial a new database for the new `postgresql`
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$ initdb /usr/local/var/postgres -E utf8
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4. Upgrade the old one to current one with `pg_upgrade` command; for more information you could check out at [postgresql docs](http://www.postgresql.org/docs/9.2/static/pgupgrade.html)
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$ pg_upgrade -b /usr/local/Cellar/postgresql/9.3.5_1/bin -B /usr/local/Cellar/postgresql/9.4.0/bin -d /usr/local/var/postgres9351 -D /usr/local/var/postgres
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it was actually simple than it looks with clearer explanation as following:
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$ pg_upgrade -b oldbindir -B newbindir -d olddatadir -D newdatadir
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5. Start your postgresql server and continue working!
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