Once we set J2SE_PREEMPTCLOSE env variable to 1 and try to run java -version gives the following error with 1.3.1_xx.

$J2SE_PREEMPTCLOSE=1
export J2SE_PREEMPTCLOSE

$ /java/re/jdk/1.3.1_06/latest/binaries/linux-i586/bin/java -version

gives the following error on RH 7.3

/.automount/koori.sfbay/root/a/v10/jdk/1.3.1_06/fcs/binaries/linux-i586/bin/i386/native_threads/java: relocation error: /.automount/koori.sfbay/root/a/v10/jdk/1.3.1_06/fcs/binaries/linux-i586/jre/lib/i386/libpreemptive_close.so: symbol __libc_sendto, version GLIBC_2.0 not defined in file libc.so.6 with link time reference

$ /java/re/jdk/1.3.1_08/promoted/latest/binaries/linux-i586/bin/java -version

/.automount/koori.sfbay/root/p/v10/jdk/1.3.1_08/fcs/b03/binaries/linux-i586/bin/i386/native_threads/java: relocation error: /.automount/koori.sfbay/root/p/v10/jdk/1.3.1_08/fcs/b03/binaries/linux-i586/jre/lib/i386/libpreemptive_close.so: symbol __libc_sendto, version GLIBC_2.0 not defined in file libc.so.6 with link time reference



While

$ unset J2SE_PREEMPTCLOSE
$ /java/re/jdk/1.3.1_06/latest/binaries/linux-i586/bin/java -version
java version "1.3.1_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1_06-b01)
Java HotSpot(TM) Client VM (build 1.3.1_06-b01, mixed mode)
$ /java/re/jdk/1.3.1_08/promoted/latest/binaries/linux-i586/bin/java -version
java version "1.3.1_08"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1_08-b03)
Java HotSpot(TM) Client VM (build 1.3.1_08-b03, mixed mode)