Hi all,
Suffering significant slowdowns of a PL/SQL process that used to be faster. Tables and indexes are analyzed on a daily basis. When I look at a problematic SQL statement in Tools > Sessions, when I click on SQL Monitor I get these errors:

ORA-31011: XML parsing failed
ORA-06512: at "SYS.DBMS_SQLTUNE", line 18940
ORA-19213: error occurred in XML processing at lines 1
LPX-00242: invalid use of ampersand ('&') character (use &)
ORA-06512: at "SYS.XMLTYPE", line 272
ORA-06512: at line 1
ORA-06512: at "SYS.DBMS_SQLTUNE", line 14318
ORA-06512: at "SYS.DBMS_SQLTUNE", line 19036
ORA-06512: at "SYS.DBMS_SQLTUNE", line 19367
ORA-06512: at line

Has anyone seen this?
Thanks!
-Peter