https://vistapedia.com/index.php?action=history&feed=atom&title=RPC_HELP_RPC_Limits_Max_number_of_parameters 2026-05-05T15:17:45Z Revision history for this page on the wiki MediaWiki 1.43.0 https://vistapedia.com/index.php?title=RPC_HELP_RPC_Limits_Max_number_of_parameters&diff=16753&oldid=prev 2015-07-06T11:56:28Z

<p>Created page with &quot;<a href="/index.php/RPC_Broker_Help" title="RPC Broker Help"> RPC Broker Help Home</a> &lt;h2&gt;Maximum Number of Parameters&lt;/h2&gt; The remote procedure calls (RPCs) become M DO procedures on the VistA M Server. Since RPCs are...&quot;</p> <p><b>New page</b></p><div>[[RPC_Broker_Help| RPC Broker Help Home]]<br /> &lt;h2&gt;Maximum Number of Parameters&lt;/h2&gt;<br /> <br /> The remote procedure calls (RPCs) become M DO procedures on the VistA M Server. Since RPCs are communicated to the VistA M Server through a message mechanism, additional information is included with the message.<br /> <br /> Parameters are processed as PASCAL short strings with a maximum of 255 characters. Each parameter is encoded with a three-character length plus a type character. Therefore, every parameter occupies length (parameter) + four. The maximum transmission at this time is 240 characters, since additional header information is present with every RPC.<br /> <br /> A theoretical maximum, where every parameter was length 1 would give number of parameters = 240/5 or 48 parameters. A single parameter (e.g., a long string) could not exceed 240 - 4, or 236 characters. Future support will be based on the PASCAL 32-bit string, which can, theoretically, reach 2 GB. Limitations on the VistA M Server will still limit this to far less, however.</div>

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