impdp not starting db file sequential read

Oracle 19c (19.20.0.0.0)

Hello,

I face with following issues:

IMPDP and DBMS_STATS procedures hangs

IMPDP is not running. I got message "Connected to: Oracle Database 19c Enterprise Edition Release 19.0.0.0.0" and it hangs

At dba_datapump_jobs, job has status "NOT RUNNING"

Following queries is still hanging too

EXEC DBMS_STATS.GATHER_SCHEMA_STATS ('SYS');

exec DBMS_STATS.GATHER_DATABASE_STATS (gather_sys=>TRUE);

v$session contains below events for that:

impdp - db file sequential read

stats - read by other session

In v$sql i'm finding queries that trying get data from tables dba_queue_tables and  SYS.USER$ U, SYS.OBJ$ OT, SYS.IND$ I, SYS.OBJ$ OI