ERROR on AIX - no library weblogicoci36 (libweblogicoci36.a or .so) in java.library.path

Question

I have WLS 5.1 SP10 running successfully on all platforms (Solaris,
HP-UX, NT/2000 and AIX). On AIX, I am unable to communicate with the
Oracle instance. The error I am receiving is the well-known "no
library weblogicoci36 (libweblogicoci36.a or .so) in
java.library.path". The actual command and output are:
[undertaker]/apps/weblogic2/weblogic/bin/oci816_8$ java utils.dbping
ORACLE weblogic weblogic
Error encountered:
java.sql.SQLException: System.loadLibrary threw
java.lang.UnsatisfiedLinkError
with the message 'no library weblogicoci36 (libweblogicoci36.a or
.so) in java.library.path'.
at weblogic.jdbcbase.oci.Driver.connect(Driver.java:116)
at java.sql.DriverManager.getConnection(DriverManager.java:459)
at java.sql.DriverManager.getConnection(DriverManager.java:108)
at utils.dbping.main(dbping.java:156)
I have followed the BEA recommended resolution steps, and the problem
persists. While I have seen many posts about this problem on Solaris,
NT and even HP-UX, I have not been seen posts with AIX as the
platform. Any insight into why the problem is occuring is greatly
appreciated. Here is the enviroment:
1. AIX 4.3.3
2. WLS 510 SP10
3. Oracle 8.1.6
============= Setting Environment ================
WL_HOME=/apps/weblogic2/weblogic
JAVA_HOME=/usr/java_dev2
CLIENT_CLASSES=/apps/weblogic2/weblogic/myserver/clientclasses
SERVER_CLASSES=/apps/weblogic2/weblogic/myserver/serverclasses
SERVLET_CLASSES=/apps/weblogic2/weblogic/myserver/servletclasses
PATH=/usr/java_dev2/jre/sh:/usr/java_dev2/sh:/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin:/usr/local/bin:/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin:/apps/oracle/product/8.1.6/bin:/usr/local/bin:/usr/ucb
CLASSPATH=/usr/java_dev2/lib/tools.jar:/apps/weblogic2/weblogic/license:/apps/weblogic2/weblogic/lib/weblogic510sp10.jar:/apps/weblogic2/weblogic/classes:/apps/weblogic2/weblogic/lib/weblogicaux.jar:/apps/weblogic2/weblogic/lib/aix/oci816_8:/apps/oracle/product/8.1.6/bin:/apps/oracle/product/8.1.6/lib:/apps/weblogic2/weblogic/bin/oci816_8:/apps/weblogic2/weblogic/myserver/clientclasses:/apps/weblo
ic2/weblogic/myserver/serverclasses
LIBPATH=/apps/weblogic2/weblogic/lib/aix:/apps/weblogic2/weblogic/lib/aix/oci816_8:/apps/oracle/product/8.1.6/lib
Regards,
Jeffrey Overton

Answer 1

We have "worked around" this problem. We switched to the Oracle thin
client driver and resolved the problem. We are still working with BEA
Technical Support on this issue. I'll post updates as we get more
information.
[email protected] (Jeffrey Overton) wrote in message news:<[email protected]>...
"Tom Gross" <[email protected]> wrote in message news:<[email protected]>...
I haven't tried 5.1 on AIX, but I know in 6.0 there is an error in startWebLogic.sh
specific to AIX: it exports "LIB_PATH" when it should say "LIBPATH". I just checked
in the 5.1 script and it appears to have the same error. You need to change the
name "LIB_PATH" to "LIBPATH". This error is fixed in 6.1 so we can be sure there
is at least one other person on the planet who is trying to use Weblogic on AIX.
:-)Tom,
Thanks for the help. Unfortunately, I cannot find a reference to
LIB_PATH in setEnv.sh or startWebLogic.sh. At this point, we are
pursuing the possibility that the IBM JDK 1.2.2 introduced some
incompatibilities. From the "IBM AIX Developer Kit, Java TM2
Technology Edition, Version 1.2.2 README":
"Because of incompatibility between the IBM AIX Developer Kit, Java
TM2 Technology Edition, Version 1.2.2"..."JNI executable programs,
including third-party software packages and those built for previous
Java software releases on AIX, that were built without this binder
option are NOT compatible with the JVM in this
release"..."Compatibility of an executable program can be verified
using dump -ov The stdout output will show the modtype to be "UR"..."A
script file (convertJNI) is shipped in the directory
/usr/java_dev2/sdk/sh. This script will help you to convert the
modtype to UR in the optional header of your JNI executable programs
without having to recompile the code."
Out of the hundreds of potential files, which need to be converted?
Based on additional information obtained by running in verbose mode,
we were able to gather the following:
java.sql.SQLException: System.loadLibrary threw
java.lang.UnsatisfiedLinkError
with the message '/apps/weblogic2/weblogic/lib/aix/oci816_8/libweblogicoci36.a:
0509-130 Symbol resolution failed
for /apps/oracle/product/8.1.6/lib/libclntsh.a(shr.o) because:
0509-136 Symbol JNI_CreateJavaVM (number 253) is not
exported from
dependent module /usr/java_dev2/jre/bin/libjava.a.
0509-136 Symbol JNI_GetDefaultJavaVMInitArgs (number 254) is
not exported from
dependent module /usr/java_dev2/jre/bin/libjava.a.
0509-136 Symbol dlsym (number 255) is not exported from
dependent module /usr/j'.
at weblogic.jdbcbase.oci.Driver.connect(Driver.java:116)
at java.sql.DriverManager.getConnection(DriverManager.java:459)
at java.sql.DriverManager.getConnection(DriverManager.java:108)
at utils.dbping.main(dbping.java:156)
We performed the dump -ov on each and each reported a modtype of RE
instead of UR.
We backed up libclntsh.a and libweblogicoci36.so, converted one at a
time, and ran the dbping after each. No such luck. Any ideas on how
we can find the JNI needle in the haystack?
Regards,
Jeffrey Overton