Issue in Oracle

Dear All,

I am facing below mentioned error in alert log file. I am running Oracle 10g
release 2 on Red Hat ES 5.

ORA-00604:
error occurred at recursive SQL level 1

ORA-12663:
Services required by client not available on the server

ORA-36961:
Oracle OLAP is not available.

ORA-06512:
at "SYS.OLAPIHISTORYRE TENTION", line 1

Can anybody
please let me know how to solve this issue,

Regards,