
ORA-12801: error signaled in parallel query server P002
ORA-01861: literal does not match format string
ORA-06512: at "ULEGAL.CLAP", line 11613
ORA-06512: at "ULEGAL.CLAP", line 11613
ORA-06512: at "ULEGAL.CLAP", line 14626
ORA-06512: at line 1

Suggested Resolution
ORA-06512 is caused by the stack being unwound by unhandled exceptions
ORA-12801 may be caused by a parallel query server that reached an exception condition. 
ORA-08103 The object may been deleted by another user since the operation began. Or a prior incomplete recovery restored the database to a point in time during the deletion of the object  

The options to resolve this Oracle error are:
1) Fix the condition that is causing the unhandled error.
2) Write an exception handler for this unhandled error.
3) For ORA-12801 check the following error message for the cause, it may be that not enough processors were available to support this load and consult your error manual for the appropriate action.)
4) Remove references to the object or delete the object if this is the result of an incomplete recovery.

using the same format for these errors i wanna understand the problem and solution

new error"  ORA-08103: object no longer exists ORA-06512: at "ULEGAL.CLAP", line 23 ORA-06512: at "ULEGAL.CLAP", line 14623 ORA-06512: at line 1  " Provide exactly two different responses that are separated with 6 asterisk symbols: ******.
user