I am geting errors in my database alert log file ora-12012 and ora 44003

Question

Hi all,
I am using oracle 10g ...10.2.0.1.0 and OS is solaris 10.......
i am geting these errors in my database alert log file last two days..i am not geting why it is coming?
ORA-12012: error on auto execute of job 8887
ORA-44003: invalid SQL name
and trace file is i got i am posting here please help any one is aware about this....
System name: SunOS
Node name: obrmzone1
Release: 5.10
Version: Generic_137111-06
Machine: sun4v
Instance name: ------
Redo thread mounted by this instance: 1
Oracle process number: 144
Unix process pid: 26874, image:--------- (J000)
*** ACTION NAME:(AUTO_SPACE_ADVISOR_JOB) 2011-06-10 22:00:49.372
*** MODULE NAME:(DBMS_SCHEDULER) 2011-06-10 22:00:49.372
*** SERVICE NAME:(SYS$USERS) 2011-06-10 22:00:49.372
*** SESSION ID:(110.7114) 2011-06-10 22:00:49.372
*** 2011-06-10 22:00:49.372
ORA-12012: error on auto execute of job 8887
ORA-44003: invalid SQL name
thank you in advance,
Dav

Answer 1

I just google with "ORA-44003: invalid SQL name" and found below link:
http://www.oracle-base.com/articles/10g/dbms_assert_10gR2.php
SIMPLE_SQL_NAME
The SIMPLE_SQL_NAME function checks the input string conforms to the basic characteristics of a simple SQL name:
The first character of the name is alphabetic.
The name only contains alphanumeric characters or the "_", "$", "#"
Quoted names must be enclosed by double quotes and may contain any characters, including quotes provided they are represented by two quotes in a row ("").
The function ignores leading and trailing white spaces are ignored
The length of the input string is not validated.