UltraLite Embedded SQL User's Guide
  Data Access Using Embedded SQL
    The SQL Communication Area
      Using multiple SQLCAs

Connection management with multiple SQLCAs

You do not need to use multiple SQLCAs to have more than one connection to a single database.

Each SQLCA can have one unnamed connection. Each SQLCA has an active or current connection. All operations on a given database connection must use the same SQLCA that was used when the connection was established.

For more information, see SET CONNECTION statement [Interactive SQL] [ESQL].