I am following the instructions here:
to install Oracle foreign data wrapper, oracle_fdw, on a PostgreSQL server.
---
Oracle version: Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production, running on Red Hat Linux 7.2
PostgreSQL version: PostgreSQL 9.4.4 on x86_64-unknown-linux-gnu, compiled by gcc (Debian 4.7.2-5) 4.7.2, 64-bit, running on Debian 7 (wheezy).
---
I was able to install sqlplus and connect from PostgreSQL server to Oracle server using sqlplus successfully, so connectivity is not a problem.
But when I try to create the extension, I get the following error:
---
postgres=# create extension oracle_fdw;
server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
The connection to the server was lost. Attempting reset: Failed.
---
shared_preload_libraries = 'oracle_fdw'
but now I can't restart Postgres:
---
# service postgresql restart
[....] Restarting PostgreSQL 9.4 database server: main[....] The PostgreSQL server failed to start. Please check the log output: t=2016-09-15 11:05:42 PDT d= h= p=23300 a=FATAL: XX000: invalid cache ID[FAILt=2016-09-15 11:05:42 PDT d= h= p=23300 a=LOCATION: SearchSysCacheList, syscache.c:1219 ... failed!
failed!
---
Looking into /var/log/postgresql/postgresql-9.4-main.log I only see these two lines:
t=2016-09-15 11:05:42 PDT d= h= p=23300 a=FATAL: XX000: invalid cache ID: 41
t=2016-09-15 11:05:42 PDT d= h= p=23300 a=LOCATION: SearchSysCacheList, syscache.c:1219
Removing oracle_fdw from shared_preload_libraries allows postgres to be restarted, so this is the one causing restart to fail.
How to fix this and get the foreign data wrapper working?
Thank you.