dump snippets

How to export and import Oracle schemas, or backup Oracle databases

Tagged import, export, oracle, dump, backup  Languages bash

You can use the exp and imp executables to perform data backup and restoration.

-- Export
exp <username>/<password>@<server> file=data.dmp consistent=y grants=no statistics=none

-- Import
imp <username>/<password>@<server> file=data.dmp fromuser=<source_username> touser=<username>

Barebone Web Development With Rack

Tagged rack, ruby, dump, headers  Languages ruby

Create a file named config.ru:

run lambda { |env|
  [200, {"Content-Type" => "text/html"}, [view(env)]]

def view(env)
  res = ""
  res << "<html><body><pre>"
  env.sort.each do |key, value|
    res << "#{key}: #{value}"
    res << "\n"
  res << "</pre></body></html>"

Start the server with e.g. rackup, puma, or thin:

$ rackup

Access http://localhost:9292 to see the request headers.