How to save (export) table stats

Before analyzing a table you may want to save the old stats (i.e. if the table is very large
and analyzing takes a while just to have a backup of previous stats). Here's the syntax:

SQL> exec dbms_stats.export_table_stats('SCHEMA_OWNER', 'TABLE_NAME', NULL,
'STATS_TABLE_NAME', 'STATID', TRUE, 'SCHEMA_OF_STATS_TABLE');