Why the x$bh view does not exist?
SQL> select*from v$version;
BANNER
---------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
PL/SQL Release 11.1.0.6.0 - Production
CORE 11.1.0.6.0 Production
TNS for 32-bit Windows: Version 11.1.0.6.0 - Production
NLSRTL Version 11.1.0.6.0 - Production
SQL> conn system/oracle
Connected.
SQL> desc X$BH;
ERROR:
ORA-04043: object X$BH does not exist