Oracle7 Server Messages
 
 
 
 
 
04020-04029: Library Object Locks
This section lists messages generated when a library object is locked and cannot be accessed. 
	ORA-04020	deadlock detected while trying to lock object name 
| Cause: | While trying to lock a library object, a deadlock is detected.  | |
| Action: | Retry the operation later.  | |
	ORA-04021	time-out occurred while waiting to lock object name 
| Cause: | While trying to lock a library object, a time-out occurred.  | |
| Action: | Retry the operation later.  | |
	ORA-04028	cannot generate diana for object name
| Cause: | A lock conflict prevented the generation of diana for an object. | |
| Action: | Check the syntax. If no syntax errors are found, report this error to Oracle World Wide Support. | |
	ORA-04029	error ORA-num occurred when querying name 
| Cause: | The table or view being queried might be missing. Look up the ORA-num indicated in the message.  | |