| Version | Type | Default | Session Modifiable |
System Modifiable |
| 7.3.4 | String | No | No | |
| 8.0.4 | String | No | No | |
| 8.0.5 | String | No | No | |
| 8.0.6 | String | No | No | |
| 8.1.5 | String | No | No | |
| 8.1.6 | String | No | Immediate | |
| 8.1.7 | String | No | Immediate | |
| 9.0.1 | String | No | Immediate | |
| 9.2.0 | String | No | Immediate |
This parameter specifies the directory in which foreground process trace files are written
The parameter can be set in the initialisation file e.g.:
user_dump_dest = 'directory'e.g.
user_dump_dest = 'R:\Oracle\Admin\NT92001\udump';
This parameter can be also set at system level e.g.
ALTER SYSTEM SET user_dump_dest = 'Q:\Udump';
In Oracle 9.2 (Windows 2000), when the ALTER SYSTEM command is used to change this parameter, output is immediate written to the new directory.
This parameter cannot be set at session level
This directory can include the following trace files:
| Trace file type | Example |
| Dedicated server process trace files | nt92001_ora_1234.trc |
| Shared server process trace files | nt92001_s000_1234.trc |
| Dispatcher process trace files | nt92001_d000_1234.trc |
| Parallel execution slave process trace files | nt92001_p000_1234.trc |
| Job queue process trace files | nt92001_j000_1234.trc |