User's Guide 
  Part VI.  SQL Anywhere Reference
  Chapter 43.  Watcom-SQL StatementsTo start a database engine
START ENGINE AS engine-name [ STARTLINE command-string]
ISQL
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The START ENGINE statement starts a database engine. If you wish to specify a set of options for the engine, use the STARTLINE keyword together with a command string. Valid command strings are those that conform to the database engine command-line description in the chapter "SQL Anywhere Components".
Start a database engine, named sample, without starting any databases on it.
     START ENGINE AS sample ;
Start a database engine with a maximum cache size of 4 megabytes, loading the sample database.
START ENGINE AS sampleSTARTLINE 'dbeng50w -c 4096 c:\sqlany50\sademo.db'
The following example shows the use of a STARTLINE clause.
     START ENGINE AS eng1 STARTLINE 'dbeng50 -c 8096'