set warnings off; set sql dialect 3; 
 show version;  
show database; 

set heading off; set list off;  
select '-- PACKET # 1:' BEGIN_SECTION from rdb$database; commit;  
COMMIT;
SET TRANSACTION READ WRITE READ COMMITTED RECORD_VERSION NO WAIT;
set heading off;
set list off;
set term ^;

execute block returns(msg varchar(200)) as
   <. . . тут идут insert'ы (в других двух скриптах - update & delete) . . .>
end
^set term ;^
commit;

select 'Take some pause at '||cast('now' as timestamp) msg from rdb$database;
-- тут ему даётся передых, примерно 30 сек:
shell rndpause.bat;
select 'Pause is over   at '||cast('now' as timestamp) msg from rdb$database;

----------------------------------------------------------------------------------
-- а теперь всё повторяем заново,  ЗА ИСКЛЮЧЕНИЕМ  show version & show database:
set heading off; set list off;  
select '-- PACKET # 2:' BEGIN_SECTION from rdb$database; commit;  
COMMIT;
SET TRANSACTION READ WRITE READ COMMITTED RECORD_VERSION NO WAIT;
set heading off;
set list off;
set term ^;

<. . . далее всё повторяется . . . >

-- INSERTING, window # 247.  Start  iter # 1  at 19:23:18,00 
ISQL Version: WI-V2.5.3.26682 Firebird 2.5
Server version:
Firebird/linux AMD64 (access method), version "LI-T3.0.0.30695 Firebird 3.0 Alpha 1"
Firebird/linux AMD64 (remote server), version "LI-T3.0.0.30695 Firebird 3.0 Alpha 1/tcp (oel64)/P12"
Firebird/x86/Windows NT (remote interface), version "WI-V2.5.3.26682 Firebird 2.5/tcp (CSMIRROR)/P12"
on disk structure version 12.0
Database: 192.168.0.220/3330:idx_test
        Owner: SYSDBA                         
PAGE_SIZE 4096
Number of DB pages allocated = 32220
Sweep interval = 0
Forced Writes are OFF
Transaction - oldest = 739
Transaction - oldest active = 740
Transaction - oldest snapshot = 179
Transaction - Next = 2480
ODS = 12.0
Default Character set: WIN1251

-- PACKET  # 1 : 


-- attach_id=285, intro .sql at 2013-11-02 19:23:07.8550, init gen_test=1312440                                                                                                                          
-- adding 147 rows, v_rnd4err=0.69, LOWER_THRESHOLD_FOR_ERR=0.00, v_last_gen=1312440                                                                                                                     
insert into tmp(. . .) values(. . .); -- i=0                                 
insert into tmp(. . .) values(. . .); -- i=1                                  
<...>
insert into tmp(. . .) values(. . .); -- i=146                              
commit; -- finish adding 147 rows at 2013-11-02 19:23:07.8670, i=147, curr gen_test=1312637                                                                                                              


Take some pause at 2013-11-02 19:23:07.8720  


Pause is over   at 2013-11-02 19:23:35.7900  


-- PACKET  # 2 : 

<... далее всё, как в пакете # 1: несколько сотен аналогичных строк. . .>

-- INSERTING, window # 247.  Finish iter # 1  at 19:28:26,98