ORA-1652 temporary tablespace temporary segments of Oracle cannot be extended Problem Analysis in alert. the ORA-1652 error is reported in the log file, prompting that the temporary segment of the temporary tablespace cannot be extended, but does not tell us what caused this error, Nor tell more specific information, such as user and SQL statements. Therefore, you need to set the event to generate a trc file when the ORA-1652 occurs. The trc file records information about users, machines, operating systems, and SQL statements. Www.2cto.com through this trc file, you can determine what SQL has a ORA-1652 error. The method for setting an event is as follows: ALTER system set events '1652 trace name errorstack level 3'; disable it after an error message is captured. The procedure is as follows: ALTER system set events '2014 trace name errorstack off'; if you need to SET multiple EVENTS, you can perform this operation: ALTER system set events '2014 trace name errorstack level 3: 1652 trace name errorstack off '; if the event is SET to the spfile file, you need to clear it as follows: alter system set event = ''scope = spfile sid = '*';