In the JDBCOP TCK User's Guide
the table of environment variables used in command line examples should also contain

TCK_HOME, RUNTIME_PATH, CLASSPATH, JAVATEST_HOST, RI_HOME, DISPLAY, and JAVA_HOME

$TCK_HOME path to the tck directory (used in the AgentMain,sh script)
FYI (you may want to replace all instances of $TCK_PATH to be $TCK_HOME
for TCK consitency.)

$RUNTIME_PATH path to the JVM used to launch the harness

CLASSPATH classpath used by harnes and agent

$JAVATEST_HOST name of machine running the harness
 (refered to in the agent example and the AgentMain.sh script)

$RI_HOME path to the reference implementation

$DISPLAY should address X-server on your workstation. ( used by AgentMain.sh)

$JAVA_HOME is used in the StaticSigTest.sh script see $TCK_HOME/ri