PG::Error: ERROR: new encoding (UTF8) is incompatible.md

##Problem I have installed : ruby-2.0.0,postgres-9.2 , now in rails app when I execute:

rake db:create , command I get:

  PG::InvalidParameterValue: ERROR:  new encoding (UTF8) is incompatible with the encoding of the template database (SQL_ASCII)
  HINT:  Use the same encoding as in the template database, or use template0 as template.
  : CREATE DATABASE "my_db_name" ENCODING = 'unicode'.......
  bin/rake:16:in `load'
  bin/rake:16:in `<main>'
  Couldn't create database for {"adapter"=>"postgresql", "encoding"=>"unicode", "database"=>"my_db", "host"=>"localhost", "pool"=>5, "username"       =>"my_user", "password"=>"my_password"}

##Solution

Ok, below steps resolved the problem:

First, we need to drop template1. Templates can’t be dropped, so we first modify it so t’s an ordinary database:

    UPDATE pg_database SET datistemplate = FALSE WHERE datname = 'template1';

Now we can drop it:

    DROP DATABASE template1;

Now its time to create database from template0, with a new default encoding:

    CREATE DATABASE template1 WITH TEMPLATE = template0 ENCODING = 'UNICODE';

Now modify template1 so it’s actually a template:

    UPDATE pg_database SET datistemplate = TRUE WHERE datname = 'template1';

Now switch to template1 and VACUUM FREEZE the template:

  \c template1

  VACUUM FREEZE;

Problem should be resolved.