Oracle XE fails on HammerDB benchmark

I have Oracle XE 21c and HammerDB 4.4. The task is to benchmark database. Oracle Database 21c Express Edition Release 21.0.0.0.0 - Production Version 21.3.0.0.0 Well, because of that I've done the command below after 'sqlplus system/pass_of_sys': alter session set container=XEPDB1; (that's the name of pluggable DB); create tablespace tpcctab datafile 'tpcctab.dat' size 8G autoextend on; create temporary tablespace tpcctemp tempfile 'tpcctemp.dat' size 4G autoextend on; And I've created HammerDB creating schema script which runs on local machine: dbset bm TPROC-C dbset db ora diset connection system_user system diset connection system_password pass_of_sys diset connection instance 192.168.192.11/XEPDB1 diset tpcc tpcc_user tpcc diset tpcc tpcc_pass tpcc diset tpcc tpcc_def_tab tpcctab diset tpcc tpcc_def_temp tpcctemp diset tpcc count_ware 4 diset tpcc num_vu 3 buildschema .... and driver script which runs on another machine in the same network: dbset db ora dbset bm TPROC-C diset connection system_user system diset connection system_password pass_of_sys diset connection instance 192.168.192.11/XEPDB1 diset tpcc tpcc_user tpcc diset tpcc tpcc_pass tpcc diset tpcc ora_driver timed diset tpcc rampup 1 diset tpcc duration 1 diset tpcc checkpoint true diset tpcc total_iterations 1000 diset tpcc allwarehouse true loadscript vuset vu 3 vuset logtotemp 1 vucreate vurun Every time first script creates tpcc user, both then executes several transactions and fails - even if to write **'diset connection instance 192.168.192.11:1521/XEPDB1'**, Oracle XE returns different errors, every time error is different: - KPEDBG_HDL_PUSH_FCPTRMAX; - KPEDBG_HDL_POP_FCPTR; - KPEDBG-...TLSORA-24550 and smth else. Moreover, rampup period does not start. If in driver script in string **'diset tpcc total_iterations 1000'** write more than 1000, or in **'diset tpcc duration 2'** write more than 1 - driver script fails even with no transaction with the same error codes.... And of course I know about XE limitations. So WHAT should I do to come over that task? Any ideas, please?((