This should list waiting jobs dependent on currently running jobs:
SELECT CCN_WAIT.NAME WAITING_JOB_NAME,
CSJD_WAIT.JOB_CODE WAITING_JOB,
CCN_RUN.NAME RUNNING_JOB_NAME,
CSJD_RUN.JOB_CODE RUNNING_JOB,
CSJR_RUN.START_DATE
FROM CMN_SCH_JOB_DEFINITIONS CSJD_RUN INNER JOIN
CMN_SCH_JOBS CSJ_RUN ON
CSJD_RUN.ID = CSJ_RUN.JOB_DEFINITION_ID INNER JOIN
CMN_SCH_JOB_RUNS CSJR_RUN ON
CSJ_RUN.ID = CSJR_RUN.JOB_ID INNER JOIN
CMN_SCH_JOB_NONCONCUR CSJN_RUN ON
CSJD_RUN.ID = CSJN_RUN.NON_CONCUR_JOB_DEF_ID INNER JOIN
CMN_SCH_JOB_DEFINITIONS CSJD_WAIT ON
CSJN_RUN.JOB_DEFINITION_ID = CSJD_WAIT.ID INNER JOIN
CMN_SCH_JOBS CSJ_WAIT ON
CSJD_WAIT.ID = CSJ_WAIT.JOB_DEFINITION_ID INNER JOIN
CMN_CAPTIONS_NLS CCN_WAIT ON
CSJD_WAIT.ID = CCN_WAIT.PK_ID INNER JOIN
CMN_CAPTIONS_NLS CCN_RUN ON
CSJD_RUN.ID = CCN_RUN.PK_ID
WHERE CCN_WAIT.TABLE_NAME = 'CMN_SCH_JOB_DEFINITIONS' AND
CCN_WAIT.LANGUAGE_CODE = 'en' AND
CCN_RUN.TABLE_NAME = 'CMN_SCH_JOB_DEFINITIONS' AND
CCN_RUN.LANGUAGE_CODE = 'en' AND
CSJR_RUN.STATUS_CODE = 'PROCESSING' AND
CSJ_WAIT.STATUS_CODE = 'WAITING' AND
CSJN_RUN.JOB_DEFINITION_ID != CSJN_RUN.NON_CONCUR_JOB_DEF_ID