question Re: HUE external database in Archives of Support Questions (Read Only)

HUE external database

crcerror — Tue, 21 Apr 2026 13:58:41 GMT

Hi,

With CDH 5.4 i am trying to use an external postgres database. The selection option in the CDH manager for the HUE service only list options for mysql and sqllite.

Hue does support postgres and i got it to work by adding the config into the safety valve. Is there a reason why this cannot be done with the selection options.

maybe something to add in a next version?

Re: HUE external database

Darren — Fri, 01 May 2015 18:51:26 GMT

There are licensing issues with the postgresql library that Hue uses, so we have not been able to incorporate a seamless integration into Cloudera Manager.

We'd like to improve this experience in a future release, but I can't promise anything.

Re: HUE external database

crcerror — Sat, 02 May 2015 16:53:31 GMT

ok, i would be nice to have.

but the saftety valve workaround also works fine.

thx.

Re: HUE external database

matdba — Tue, 12 Apr 2016 08:44:09 GMT

Hello Darren,

could you explain better what are the problems about postgresql license ?

I am also in the PostgreSQL community, so if it's possible I will help with.

Kind Regards

Re: HUE external database

Darren — Tue, 12 Apr 2016 20:21:24 GMT

Hi,

Thanks for the offer to help! Hue uses the psycopg2 to talk to postgresql, which we have since found a way to make easy to install without violating the license.

We'll likely have more seamless integration in an upcoming release.

Thanks,
Darren

Re: HUE external database

Vince155 — Fri, 03 Mar 2017 04:06:42 GMT

I'm also trying to connect HUE to an external database, Oracle. But I'm getting the error: "Oracle client libraries cannot be found on host". This doesn''t make sense because I've sucessfully connected to the database from that installation node using the scm_prepare_database.sh script. Any suggestions?

Thanks,

Vince

Re: HUE external database

sridharm — Sat, 07 Oct 2017 11:23:39 GMT

Hi Team,

I am also getting same error.I am able t oconnect remote db with scm,rman,hive,oozie and where as for hue it is throwing error :Oracle client libraries cannot be found on host

Any specific steps are required for hue:

[root@xxxxx java]# pwd
/usr/share/java
[root@xxxx java]# ll
total 3320
-rwxr-xr-x. 1 cloudera-scm cloudera-scm 3397734 Oct 5 09:53 oracle-connector-java.jar

Thanks,

Sridhar

Re: HUE external database

mjarnold — Tue, 10 Oct 2017 12:15:44 GMT

@sridharm

Hue is not written in Java, thus the Oracle connector jar will not work. You want the Oracle Instant Client for Hue Parcel.