We've had to do this a couple times over the past few months. Some queries that were provided by support follow. As has been mentioned, always good to get vendor sign off before directly interacting with the prod database! This was for Oracle DB, AE v9 SP8.
DELETE from EJ where
EJ_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND EH_NAME =
'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EFC
where EFC_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EPDC
where EPDC_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EPD
where EPD_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EPPF
where EPPF_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from ESTP
where ESTP_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EEC
where EEC_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EQT
where EQT_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EET
where EET_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from ETI
where ETI_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EJPOP
where EJPOP_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EOI
where EOI_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EEDB
where EEDB_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EJPFV
where EJPFV_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EJPVA
where EJPVA_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EJPPC
where EJPPC_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EJPOV
where EJPOV_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EJPPF
where EJPPF_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EJPPA
where EJPPA_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EPUDA
where EPUDA_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EJPCV
where EJPCV_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EJPPO
where EJPPO_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EJPPV
where EJPPV_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EV where
EV_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND EH_NAME =
'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from ERB
where ERB_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from ECV
where ECV_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EJPP
where EJPP_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EPUD
where EPUD_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from ERET
where ERET_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EVP
where EVP_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND
EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EY where
EY_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND EH_NAME =
'CALL.MAIL.NOTIFY.HOLD_PENDING');
UPDATE AH set
ah_timestamp4 = SYSDATE, ah_status = 1850 where ah_idnr in (select EH_AH_IDNR
from EH where EH_CLIENT = '5' AND EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
UPDATE RH set
rh_timestamp4 = SYSDATE where rh_ah_idnr in (select EH_AH_IDNR from EH where
EH_CLIENT = '5' AND EH_NAME = 'CALL.MAIL.NOTIFY.HOLD_PENDING');
DELETE from EH where
EH_AH_IDNR in (select EH_AH_IDNR from EH where EH_CLIENT = '5' AND EH_NAME =
'CALL.MAIL.NOTIFY.HOLD_PENDING');
commit;