Thanks again, Scott. No success yet though.
I uninstalled Oracle instant client 12.1 using dpkg, downloaded RPMs for instant client 10.2 and installed them with alien.
I also downloaded oracle_fdw 1.4 and installed it, since I was getting this error with oracle_fdw 1.5:
---
postgres=# create extension oracle_fdw;
ERROR: could not load library "/usr/lib/postgresql/9.4/lib/oracle_fdw.so": libclntsh.so.12.1: cannot open shared object file: No such file or directory
---
Once I installed oracle_fdw 1.4 I got this:
# ldd /usr/lib/postgresql/9.4/lib/oracle_fdw.so
linux-vdso.so.1 => (0x00007ffc3b5ec000)
libclntsh.so.10.1 => /usr/lib/oracle/10.2.0.3/client64/lib/libclntsh.so.10.1 (0x00007f7251471000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f72510e6000)
libnnz10.so => /usr/lib/oracle/10.2.0.3/client64/lib/libnnz10.so (0x00007f7250c42000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f7250a3e000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f72507bc000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f725059f000)
libnsl.so.1 => /lib/x86_64-linux-gnu/libnsl.so.1 (0x00007f7250387000)
/lib64/ld-linux-x86-64.so.2 (0x00007f7252a3b000)
But again when I try to load the extension I get the same error and Postgres crashes. When I look in the latest log file at /var/lib/postgresql/9.4/main/pg_log I see these lines:
---
t=2016-09-15 16:16:08 PDT d= h= p=25327 a=LOG: 00000: server process (PID 20397) was terminated by signal 11: Segmentation fault
t=2016-09-15 16:16:08 PDT d= h= p=25327 a=DETAIL: Failed process was running: create extension oracle_fdw;
t=2016-09-15 16:16:08 PDT d= h= p=25327 a=LOCATION: LogChildExit, postmaster.c:3347
t=2016-09-15 16:16:08 PDT d= h= p=25327 a=LOG: 00000: terminating any other active server processes
t=2016-09-15 16:16:08 PDT d= h= p=25327 a=LOCATION: HandleChildCrash, postmaster.c:3068
t=2016-09-15 16:16:08 PDT d=svp2 h=127.0.0.1 p=19672 a=[unknown] WARNING: 57P02: terminating connection because of crash of another server process
t=2016-09-15 16:16:08 PDT d=svp2 h=127.0.0.1 p=19672 a=[unknown] DETAIL: The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.
t=2016-09-15 16:16:08 PDT d=svp2 h=127.0.0.1 p=19672 a=[unknown] HINT: In a moment you should be able to reconnect to the database and repeat your command.
t=2016-09-15 16:16:08 PDT d=svp2 h=127.0.0.1 p=19672 a=[unknown] LOCATION: quickdie, postgres.c:2581
t=2016-09-15 16:16:08 PDT d= h= p=19668 a=WARNING: 57P02: terminating connection because of crash of another server process
---
On Thu, Sep 15, 2016 at 2:58 PM, Scott Mead <scottm@xxxxxxxxxxx> wrote:
On Thu, Sep 15, 2016 at 4:57 PM, Arun Rangarajan <arunrangarajan@xxxxxxxxx> wrote:Thanks, Scott.oracle_fdw version 1.5.0 from http://pgxn.org/dist/oracle_fdw/ Oracle client version: instantclient 12.1I've had problems using anything > instant client 10. Give it a shot.--Scott/usr/lib/postgresql/9.4/lib# ldd oracle_fdw.solinux-vdso.so.1 => (0x00007fff50744000)libclntsh.so.12.1 => /usr/lib/oracle/12.1/client64/lib/libclntsh.so.12.1 (0x00007f44769f1000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f4476666000) libnnz12.so => /usr/lib/oracle/12.1/client64/lib/libnnz12.so (0x00007f4475f4f000) libons.so => /usr/lib/oracle/12.1/client64/lib/libons.so (0x00007f4475d0b000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f4475b07000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f4475884000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f4475668000) libnsl.so.1 => /lib/x86_64-linux-gnu/libnsl.so.1 (0x00007f4475450000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f4475247000) libaio.so.1 => /lib/x86_64-linux-gnu/libaio.so.1 (0x00007f4475045000) libclntshcore.so.12.1 => /usr/lib/oracle/12.1/client64/lib/libclntshcore.so.12.1 (0x00007f4474af5000) /lib64/ld-linux-x86-64.so.2 (0x00007f447990c000)On Thu, Sep 15, 2016 at 3:25 PM, Arun Rangarajan <arunrangarajan@xxxxxxxxx> wrote: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 7.2PostgreSQL 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 unexpectedlyThis probably means the server terminated abnormallybefore or while processing the request.The connection to the server was lost. Attempting reset: Failed.Hmm, odd that it's causing a crash.Which version of the oracle_fdw and which version of the oracle libraries are you linked to? Make sure to check 'ldd oracle_fdw.so'--Scott---Then I took clues from https://github.com/dalibo/pg_qualstats/issues/1 and added oracle_fdw to shared_preload_libraries in postgresql.conf like this: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: 41t=2016-09-15 11:05:42 PDT d= h= p=23300 a=LOCATION: SearchSysCacheList, syscache.c:1219Removing 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.--
