ORA-12012 ORA-31623: a job is not attached to this session via the specified handle

Issue:
Few Jobs are failing

Error Message:
Errors in file /orahome/oracle/product/10.2.0/admin/orcl/bdump/orcl1_j001_2694.trc:
ORA-12012: error on auto execute of job 716137
ORA-31623: a job is not attached to this session via the specified handle

Findings:
All these jobs are found to be scheduled to run at the same time (4AM daily)

The problem in running these jobs all at the same time is due to the fact that all these jobs are using the same Table 'DAYJOB'
So, each job tries to create a new table 'DAYJOB' and hence each job fails.

Solution:
1.) Schedule these jobs at different interval of time. Make sure that none of the jobs overlap with each other.
or
2.) Use a different table name for each of the jobs (DAYJOB1,DAYJOB2...etc).
     Please check with the application team the impact of using a different table name for each job.