CentOS环境JDBC与ORACLE DB测试连接不通，解决如下

CentOS环境JDBC与ORACLE DB测试连接不通，解决如下

ojdbc vs. gcj
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If, upon your travels, you should encounter this error:

java.lang.ClassNotFoundException: oracle.security.pki.OracleWallet

you probably want to double-check your java executable:

# java -versionjava version "1.4.2"gcj (GCC) 3.4.6 20060404 (Red Hat 3.4.6-3)Copyright (C) 2006 Free Software Foundation, Inc.This is free software; see the source for copying conditions. There is NOwarranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
If you see the gcj, kill it with fire and install the Sun version (or remove the gcj-based /usr/bin/java that was ahead of your Sun executable in the $PATH):

# java -versionjava version "1.4.2_13"Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_13-b06)Java HotSpot(TM) Client VM (build 1.4.2_13-b06, mixed mode)
Then all will be well in the world again.