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NAME
     DtDbLoad - load actions and data types database

SYNOPSIS
     #include <Dt/Action.h>
     void DtDbLoad(void);

DESCRIPTION
     The DtDbLoad() function loads the  actions  and  data  types
     database  into  the application.  When the function returns,
     the database has been loaded.

     An environment variable determines the set of directories to
     be  searched.  The DtDbLoad() function loads all actions and
     data types defined in files with a  .dt  suffix  located  in
     these directories.

     The directory search path is based on the value of the DTDA-
     TABASESEARCHPATH environment variable and internal defaults.
     DTDATABASESEARCHPATH  contains  a  comma-separated  list  of
     directories  in  [host:]/path  format.  The application must
     call DtDbLoad() before calling  any  of  the  routines  that
     query  either  the action or data type databases.  If called
     multiple times, the old databases are freed before  the  new
     ones are created.

RETURN VALUE
     The DtDbLoad() function returns no value.

APPLICATION USAGE
     If this function is used in a  long-lived  application,  the
     application  must dynamically reload the databases when they
     are modified.  To do  this,  the  client  must  register  to
     receive  notification  whenever  the  actions and data types
     database needs to be modified.  It is up to the  application
     to  recall DtDbLoad() after receiving notification.  This is
     done with a call to DtDbReloadNotify(3).

     If errors are encountered when reading the  database  files,
     error  messages  are  written  to  the  user's errorlog file
     ($HOME/.dt/errorlog).  Records  containing  errors  are  not
     incorporated into the internal database.

SEE ALSO
     DtAction(5), DtDbReloadNotify(3), dtdtfile(4).

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