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I am trying to install the postgis extension on my database, which resides on a web hosting service. The problem is that the control files seem to have to be found in /package/host/localhost/postgresq-9.3.2-1. I am using a hosting company where all we can access is what is in our respective home/ folders. The Postgres executables are found in the root directories which we cannot access.

I have successfully installed the PostGIS binaries, but now when I try to create the extension with CREATE EXTENSION postgis, I get the error ERROR: could not open extension control file /package/host/localhost/postgresql-9.3.2-1/share/extension/postgis.control. I cannot write anything to this directory since it is just intended to store the executables for anyone to access via some scripts the hosting provider as set up.

Can I have this .control file be somewhere else instead? Or am I just out of luck entirely?

closed as off-topic by dezso, hot2use, Colin 't Hart, mustaccio, MDCCL May 16 '18 at 0:23

If this question can be reworded to fit the rules in the help center, please edit the question.

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    Have you tried to ask your hosting company? They are definitely in the position of being able to help you. – dezso May 15 '18 at 13:08
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    I'm voting to close this question as off-topic because it should be rather a vendor support request. – dezso May 15 '18 at 13:09
  • Well I just wanted to know if it was possible to use an "off site" control file in the first place – wfgeo May 15 '18 at 13:10
  • As it sounds, you (postgres, maybe) don't have permissions on the file, so even if there were a way, you would be out of luck. – dezso May 15 '18 at 13:12
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This is not 100% proven, but the following pass of the documentation suggests you just cannot have your control files in other locations:

extension_name

The name of the extension to be installed. PostgreSQL will create the extension using details from the file SHAREDIR/extension/extension_name.control.

I can imagine one can work it around on systems supporting symbolic links - but in your case this does not help as well, as you cannot create the symlink at the right location either.

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