TNS Services like Oracle?

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Hi!

I'm currently checking how difficult it would be to create something like
Oracle TNS (I think that what it's called) service for the frontend library.
The idea is:

1. Modify conninfo_parse() to accept parameters like "service=myservice"

2. e.g. you put as connection string "user=foo password=bar
service=schlumpf", this will look into a special file (e.g. pg_services.conf)
for a section like this:
[schlumpf]
host=194.121.121.121
port=5433
database=mydb
options=....

This will allow migration of database services much easier, especially if you
have a lot of different applications (like at ISP's or ASP's), so when you
change host, port or something like this, you won't have to touch
applications (where faults are likely to occur).

Is something like this already possible in Postgres, or available with a
patch?

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Why is it always Segmentation's fault?
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