sapjco-linuxintel-2.1.9 files do not work with Red Hat Linux 7.3 2.96-110

[Former Member]

I have the following OS: Red Hat Linux 7.3 2.96-110: Linux version 2.4.18-3

We are not able to upgrade the OS at this point of time.

I downloaded the file for sapjco-linuxintel-2.1.9

I put the files: librfccm.so libsapjcorfc.so in /home/mydir/lib

The jar file was put in another lib folder.

Then I ran my java program:

$JAVA_HOME/bin/java -Djava.library.path=/home/mydir/lib -classpath lib/classes12.jar:lib/jdom.jar:lib/log4j-1.2.7.jar:lib/sapjco.jar -jar someprogram.jar $file $dir $conf

But the error I get is:

java.lang.NullPointerException without further trace. The line number of the exception corresponds to the line the RFC is made and the data from the RFC stored in an arraylist.

The whole thing works fine in my Windows environment. It does not work in Red Hat Linux 7.3 2.96-110

[Former Member]

Please see SAP note [549268|https://service.sap.com/sap/support/notes/549268] for a list of supported platforms.

Maybe some Linux expert knows if and how your Linux distribution can be patched...

[Former Member]

Problem solved.

Get the next version of GLIBC rpm/tgz file and recompile.

[Former Member]

I ran the following and got these errors:

[testuser@server1test lib]$ java -classpath sapjco.jar com.sap.mw.jco.About

java.lang.ExceptionInInitializerError: JCO.classInitialize(): Could not load middleware layer 'com.sap.mw.jco.rfc.MiddlewareRFC'

JCO.nativeInit(): Could not initialize dynamic link library sapjcorfc [/home/testuser/lib/libsapjcorfc.so: /home/testuser/lib/librfccm.so: symbol gethostent_r, version GLIBC_2.1.2 not defined in file libc.so.6 with link time reference]. java.library.path [/usr/java/j2sdk/jre/lib/i386/client:/usr/java/j2sdk/jre/lib/i386:/usr/java/j2sdk/jre/../lib/i386:/home/testuser/lib]

at com.sap.mw.jco.JCO.<clinit>(JCO.java:820)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:141)

at com.sap.mw.jco.About.<init>(About.java:33)

at com.sap.mw.jco.About.main(About.java:93)

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SAP Java Connector (JCo)

Copyright (c) 2000-2009 SAP AG. All rights reserved.

Version Information

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Java Runtime:

Operating System: Linux 2.4.18-3 for i386

Java VM: 1.4.2 Sun Microsystems Inc.

Java Codepage: ISO-8859-15

Versions:

JCo API: 2.1.9 (2010-01-28)

JCo middleware: Library not found

JCo library: Library not found

RFC library: Library not found

Paths:

JCo classes: /home/testuser/lib/sapjco.jar

JCo library: Library not found

RFC library: System-defined path

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Manifest

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Manifest-Version: 1.0

Ant-Version: Apache Ant 1.6.4

Created-By: 1.3.1_18-b01 (Sun Microsystems Inc.)

Specification-Title: SAP Java Connector

Specification-Version: 2.1.9

Specification-Vendor: SAP AG, Walldorf

Implementation-Title: com.sap.mw.jco

Implementation-Version: 20100208 1156 [2.1.9 (2010-01-28)]

Implementation-Vendor-Id: com.sap

Implementation-Vendor: SAP AG, Walldorf

Main-Class: com.sap.mw.jco.About

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