[Pljava-dev] FreeBSD pl/java problem

On ?????
04 ?????? 2013 18:19:56 Thomas Hallgren wrote:
> On 2013-02-04 16:46, Achilleas Mantzios wrote:
> > Just an update on this :
> >
> > by inserting some elog statements in ./src/C/pljava/Backend.c
> > just before JNI_createVM :
> >
> > elog(DEBUG1, "Creating JavaVM");
> >
> > elog(INFO,"jstat = %d",jstat);
> >
> > //jstat = JNI_createVM(&s_javaVM, &vm_args);
> > JNIEnv *env;
> > jstat = JNI_CreateJavaVM(&s_javaVM, (void**)&env, &vm_args);
> >
> > elog(INFO,"jstat = %d",jstat);
> >
> > it never gets into the second elog, which means it hangs in JNI_CreateJavaVM.
> >
> > Outside postgresql i can run JNI programs with no problem.
> >
> > Any clues?
> Is the postgresql back-end server configured to use the same JVM as
> you're using "outside postgresql" ?

Yes, besides my system has currently only one jdk installed,
i made pljava.so look for this libjvm.so by explicitly putting
# cat /usr/local/libdata/ldconfig/openjdk
/usr/local/openjdk6/jre/lib/amd64/server

and therefore :
ldd /usr/local/pgsql/lib/pljava.so
/usr/local/pgsql/lib/pljava.so:
libjvm.so => /usr/local/openjdk6/jre/lib/amd64/server/libjvm.so (0x800c00000)
libc.so.7 => /lib/libc.so.7 (0x800648000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x80178f000)
libm.so.5 => /lib/libm.so.5 (0x80199f000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x801abf000)
libthr.so.3 => /lib/libthr.so.3 (0x801bcd000)

Also by doing :

dynacom=# SELECT PG_BACKEND_PID();
pg_backend_pid
----------------
20205
(1 row)

dynacom=# SELECT getsysprop('user.home');

^^^^^ hangs here, and from another shell :

% gdb /usr/local/pgsql/bin/postgres 20205
....
Reading symbols from /lib/libcrypto.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/libcrypto.so.6
Reading symbols from /usr/local/pgsql/lib/pljava.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/pgsql/lib/pljava.so
Reading symbols from /usr/local/openjdk6/jre/lib/amd64/server/libjvm.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/openjdk6/jre/lib/amd64/server/libjvm.so
Reading symbols from /usr/lib/libstdc++.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libstdc++.so.6
Reading symbols from /lib/libgcc_s.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /lib/libthr.so.3...(no debugging symbols found)...done.
[New Thread 801616700 (LWP 100683/initial thread)]
Loaded symbols for /lib/libthr.so.3
Reading symbols from /usr/local/openjdk6/jre/lib/amd64/libverify.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/openjdk6/jre/lib/amd64/libverify.so
Reading symbols from /usr/local/openjdk6/jre/lib/amd64/libjava.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/openjdk6/jre/lib/amd64/libjava.so
Reading symbols from /usr/local/openjdk6/jre/lib/amd64/libzip.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/openjdk6/jre/lib/amd64/libzip.so
....

Without the explicit addition to the ldconfig in /usr/local/libdata/ldconfig/openjdk pljava.so had problems
loading it.

>
> - thomas
>
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-
Achilleas Mantzios
IT DEV
IT DEPT
Dynacom Tankers Mgmt