*DATABASE_TRHIST activation

- March 14, 2024 at 11:20 am
  
  sa-aadat.parker
  Subscriber
  
  I want to use the database *DATABASE_TRACER, but the R13 and R14 manuals state, "The option *DATABASE_TRHIST must be active." I can't find how to make it active in the manuals. Can anyone shed light on this?
- March 15, 2024 at 5:53 pm
  
  igandiko
  Ansys Employee
  
  Please see *DATABASE_OPTION description in the manual (OPTION could be TRHIST, NODOUT, etc). *DATABASE_TRHIST is used to specify the output time interval and format (ascii/binary) for TRHIST database. Please see below picture from LSPP showing this card definition.
- March 15, 2024 at 11:39 pm
  Ian Do
  Ansys Employee
  or in ASCII- simply:
```
$==============================================================================
*DATABASE_TRHIST
$       dt    binary      lcur     ioopt     
 1.0000000 
*DATABASE_TRACER
$     time     track         x         y         z    AMMGID       NID
 0.0000000         0 0.0000000 0.0000000 55.000000                 101
$-------------------------------------------------------------------------------
```