ORA-01617: cannot mount: string is not a valid thread number

ORA-01617: cannot mount: string is not a valid thread number


Cause:


The INIT.ORA parameter "thread" is not between 1 and the number of threads allowed by the control file.



Action:


Shut down the instance, change the INIT.ORA parameter and startup, or resize the thread record and/or checkpoint progress record sections of the control file.