Please put code and sample data inside [code] tags, not [quote] tags.

Test the script by echoing the command instead of executing it.

Code:

echo db2 "SELECT TRACKING_NUM, TRACKING_NUM_SUFFIX, ERROR_SRC_CD, MSG_NUM, MSG_ID, MSG_TYP, MSG_TEXT, TIMESTAMP_UPDATED, USER_UPDATED FROM ZB_RCBL_ERROR_MSG_MIG WHERE TRACKING_NUM = $TRACKING_NUM AND TRACKING_NUM_SUFFIX = $TRACKING_NUM_SUFFIX AND TIMESTAMP_UPDATED = $TIMESTAMP_UPDATED WITH UR"

Make sure that the line you have built is correct before removing the echo.