<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[Mango General]]></title><description><![CDATA[Installation, Getting Started and Basic Configuration Tutorials.  Please only post request for new tutorial here and all other user help in the appropriate forum below.]]></description><link>https://forum.mango-os.com/category/17</link><generator>RSS for Node</generator><lastBuildDate>Wed, 13 May 2026 15:46:42 GMT</lastBuildDate><atom:link href="https://forum.mango-os.com/category/17.rss" rel="self" type="application/rss+xml"/><pubDate>Fri, 13 Mar 2026 16:21:57 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Anyone using Portfolio Manager (Pi‑Portfolio)? Looking for feedback]]></title><link>https://forum.mango-os.com/topic/6182/anyone-using-portfolio-manager-pi-portfolio-looking-for-feedback</link><guid isPermaLink="true">https://forum.mango-os.com/topic/6182/anyone-using-portfolio-manager-pi-portfolio-looking-for-feedback</guid><pubDate>Fri, 13 Mar 2026 16:21:57 GMT</pubDate></item><item><title><![CDATA[Timeout to lock table systemsettings]]></title><description><![CDATA[@Jdiaz-co said in Timeout to lock table systemsettings:

hello good,
I'm having a problem. I'm using Mango 3.7.7 and the application crashes every so often.
The error I'm getting is this:
ERROR 2025-10-27T08:26:50,187 (com.serotonin.m2m2.util.timeout.TimeoutTask.run:61) - Uncaught Task Exception
org.springframework.dao.CannotAcquireLockException: PreparedStatementCallback; SQL [select settingValue from systemSettings where settingName=?]; Tiempo vencido intentando trabar (lock) la tabla "SYSTEMSETTINGS"
Timeout trying to lock table "SYSTEMSETTINGS"; SQL statement:
select settingValue from systemSettings where settingName=? [50200-199]; nested exception is org.h2.jdbc.JdbcSQLTimeoutException: Tiempo vencido intentando trabar (lock) la tabla "SYSTEMSETTINGS"
I would appreciate any help.
thank you

Hello,
This error comes from the embedded H2 database: something is holding a lock on the SYSTEMSETTINGS table too long, so reads (like select settingValue from systemSettings…) time out and throw CannotAcquireLockException.
Common causes:


Another process/tool (H2 console, external SQL client) connected to the same H2 DB while Mango is running.


Long-running DB operations (backups, purges, heavy writes) that keep the table locked.


Short default H2 LOCK_TIMEOUT (1s) causing normal contention to show up as errors.


Things to try:


Make sure only Mango is connected to the H2 DB (no external tools while it’s running).


Increase H2 lock timeout in env.properties/mango.properties, e.g.
db.url=jdbc:h2:${ma.home}/databases/mah2;LOCK_TIMEOUT=10000


Check logs around the crash time for other FATAL/DB errors that might be the real shutdown cause.


If this is a production system (not just a test setup), I strongly recommend:


Migrating from H2 to MySQL (more robust under load and concurrency).


Upgrading Mango to a more recent supported version if possible, to benefit from DB and stability fixes.


]]></description><link>https://forum.mango-os.com/topic/6155/timeout-to-lock-table-systemsettings</link><guid isPermaLink="true">https://forum.mango-os.com/topic/6155/timeout-to-lock-table-systemsettings</guid><dc:creator><![CDATA[joeamiraglia]]></dc:creator><pubDate>Mon, 27 Oct 2025 08:43:57 GMT</pubDate></item><item><title><![CDATA[rxtx 2.1.7  x64]]></title><link>https://forum.mango-os.com/topic/5873/rxtx-2-1-7-x64</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5873/rxtx-2-1-7-x64</guid><pubDate>Tue, 03 Sep 2024 13:14:17 GMT</pubDate></item><item><title><![CDATA[Mango as NTP Client &#x2F; DNP Master]]></title><description><![CDATA[@harshang-p-trivedi1 have you sorted this?
I ask because you mention about ntp, linux already natively supports ntp out of the box as a client.
I'd argue if you're using an HTS for any kind of controls, I'd leave it to do that. The less overhead you have, the leaner the system will be and you'll have less issues when issuing controls from mango.
Fox
]]></description><link>https://forum.mango-os.com/topic/5770/mango-as-ntp-client-dnp-master</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5770/mango-as-ntp-client-dnp-master</guid><dc:creator><![CDATA[MattFox]]></dc:creator><pubDate>Tue, 12 Sep 2023 14:23:40 GMT</pubDate></item><item><title><![CDATA[Timeouts when discovering BACnet device]]></title><description><![CDATA[@carnecro Not a problem, I would recommend upgrading to 4.5 there are 2 changes on the Bacnet module.
]]></description><link>https://forum.mango-os.com/topic/5650/timeouts-when-discovering-bacnet-device</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5650/timeouts-when-discovering-bacnet-device</guid><dc:creator><![CDATA[CraigWeb]]></dc:creator><pubDate>Sun, 05 Mar 2023 07:47:53 GMT</pubDate></item><item><title><![CDATA[User Permissions disappearing]]></title><description><![CDATA[Hi @MaP just to add to what @joeamiraglia  said, if you are using a persistent TCP pair then you should either override the permissions or change them from the publishing mango instance.  if they are not overridden and you change them on the receiving end, then the next time the pair syncs they will revert back to the permissions configured on the publishing instance.
I personally prefer changing them at the publishing instance as this does not affect the data point runtime, so events will not get reset.
]]></description><link>https://forum.mango-os.com/topic/5612/user-permissions-disappearing</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5612/user-permissions-disappearing</guid><dc:creator><![CDATA[CraigWeb]]></dc:creator><pubDate>Tue, 14 Feb 2023 04:12:24 GMT</pubDate></item><item><title><![CDATA[Data point with non-linear output?]]></title><description><![CDATA[@joeamiraglia That is exactly what I have running now on a test point and it does work.
@MattFox Your solution would work, but as @CraigWeb said, charting and displaying the data proved to be a little more difficult.
I'm hoping to avoid re-programming my sensor units to pre-parse the data (I'm using custom make microcontrollers). That would make them less flexible if I add/remove/change sensors.
I originally assumed I'd just need a parsed value to determine if it's moist or dry. Since then, I noticed the history chart was very useful. Since we're tracking soil moisture in a pot, displaying the values in a chart compared to sunlight, temperature, humidity, etc. is proving a lot more useful that I expected.
It would be nice if the modbus datapoint (or others) were able to call a global script instead of just the multiplier/added function. That would be the bees knees.
I'm not entirely sure the direction I will go, but I'm leaning to biting the bullet and using the two points per solution just to get the future flexibility to chart and trigger events.
]]></description><link>https://forum.mango-os.com/topic/5608/data-point-with-non-linear-output</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5608/data-point-with-non-linear-output</guid><dc:creator><![CDATA[tomatopi]]></dc:creator><pubDate>Fri, 20 Jan 2023 20:35:34 GMT</pubDate></item><item><title><![CDATA[MangoES datasource&#x27;s database error]]></title><description><![CDATA[@MattFox
Thanks for your advice
]]></description><link>https://forum.mango-os.com/topic/5599/mangoes-datasource-s-database-error</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5599/mangoes-datasource-s-database-error</guid><dc:creator><![CDATA[derguang]]></dc:creator><pubDate>Mon, 28 Nov 2022 04:17:40 GMT</pubDate></item><item><title><![CDATA[Publisher don&#x27;t listen]]></title><description><![CDATA[@Jérôme-Girard pas de problème
]]></description><link>https://forum.mango-os.com/topic/5532/publisher-don-t-listen</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5532/publisher-don-t-listen</guid><dc:creator><![CDATA[MattFox]]></dc:creator><pubDate>Tue, 30 Aug 2022 07:21:12 GMT</pubDate></item><item><title><![CDATA[License questions]]></title><description><![CDATA[Hi @gimmick. Thanks for using Mango.
Drop me a note in email. I'd like to know a bit more about your project, and I'm positive we can work something out for.
You can find me at michael.skurla@radixiot.com
]]></description><link>https://forum.mango-os.com/topic/5495/license-questions</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5495/license-questions</guid><dc:creator><![CDATA[mumcs01]]></dc:creator><pubDate>Sun, 27 Mar 2022 16:50:33 GMT</pubDate></item><item><title><![CDATA[After security Ubuntu upgrade Mango service is returning this error as started:  ERROR Null object returned for RollingRandomAccessFile in Appenders]]></title><link>https://forum.mango-os.com/topic/5494/after-security-ubuntu-upgrade-mango-service-is-returning-this-error-as-started-error-null-object-returned-for-rollingrandomaccessfile-in-appenders</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5494/after-security-ubuntu-upgrade-mango-service-is-returning-this-error-as-started-error-null-object-returned-for-rollingrandomaccessfile-in-appenders</guid><pubDate>Sat, 26 Mar 2022 11:18:54 GMT</pubDate></item><item><title><![CDATA[Timezone UTC no way to change it]]></title><link>https://forum.mango-os.com/topic/5493/timezone-utc-no-way-to-change-it</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5493/timezone-utc-no-way-to-change-it</guid><pubDate>Sat, 26 Mar 2022 10:39:28 GMT</pubDate></item><item><title><![CDATA[Apache CVE-2021-44228 log4j Remote Code Execution Vulnerability Resolution]]></title><description><![CDATA[Update: There is a 3rd vulnerability reported in log4j - CVE-2021-45105
Mango is not affected by this particular vulnerability as

Mango does not use a context lookup in any of the patterns in the supplied log4j2.xml file
Our codebase does not make use of the org.apache.logging.log4j.ThreadContext class

For more information, please see https://logging.apache.org/log4j/2.x/security.html
Mango will update to Log4J version 2.17.0 with our next release, however we do not believe this new CVE warrants an immediate patch.
]]></description><link>https://forum.mango-os.com/topic/5404/apache-cve-2021-44228-log4j-remote-code-execution-vulnerability-resolution</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5404/apache-cve-2021-44228-log4j-remote-code-execution-vulnerability-resolution</guid><dc:creator><![CDATA[Jared Wiltshire]]></dc:creator><pubDate>Fri, 10 Dec 2021 21:12:58 GMT</pubDate></item><item><title><![CDATA[CVE-2021-44228 log4j Remote Code Execution Vulnerability]]></title><description><![CDATA[Thanks for the note!  It's been a top priority today, and we are happy to have a resolution for everyone as of an hour ago. This vulnerability is going to be a pretty big deal for lots of software out in the wild, and we are super pleased we were able to get a fix out, and roll both 3.7 and 4.2 updates pretty much in hours for everyone.
Please see the info here: https://forum.mango-os.com/topic/5404/apache-cve-2021-44228-log4j-remote-code-execution-vulnerability-resolution
Have a wonderful weekend!
MIke.
]]></description><link>https://forum.mango-os.com/topic/5403/cve-2021-44228-log4j-remote-code-execution-vulnerability</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5403/cve-2021-44228-log4j-remote-code-execution-vulnerability</guid><dc:creator><![CDATA[mumcs01]]></dc:creator><pubDate>Fri, 10 Dec 2021 20:36:13 GMT</pubDate></item><item><title><![CDATA[Webmin default password]]></title><description><![CDATA[Never mind. I found a Mango box slip which had all the info on it. Thanks
]]></description><link>https://forum.mango-os.com/topic/5347/webmin-default-password</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5347/webmin-default-password</guid><dc:creator><![CDATA[SerhiiKozak]]></dc:creator><pubDate>Wed, 24 Nov 2021 16:46:45 GMT</pubDate></item><item><title><![CDATA[mango.properties]]></title><description><![CDATA[@tped See this section:
Configuration file is now named mango.properties
On this link:
https://docs-v4.mango-os.com/upgrade-to-v4
]]></description><link>https://forum.mango-os.com/topic/5343/mango-properties</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5343/mango-properties</guid><dc:creator><![CDATA[terrypacker]]></dc:creator><pubDate>Fri, 12 Nov 2021 19:38:16 GMT</pubDate></item><item><title><![CDATA[How to create Excel Report Template to generate report for events of all the data points?]]></title><link>https://forum.mango-os.com/topic/5338/how-to-create-excel-report-template-to-generate-report-for-events-of-all-the-data-points</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5338/how-to-create-excel-report-template-to-generate-report-for-events-of-all-the-data-points</guid><pubDate>Fri, 29 Oct 2021 12:30:20 GMT</pubDate></item><item><title><![CDATA[Access Control and Surveillance Modules]]></title><description><![CDATA[@terrypacker Hello, is there any update regarding to this new feature?
]]></description><link>https://forum.mango-os.com/topic/5279/access-control-and-surveillance-modules</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5279/access-control-and-surveillance-modules</guid><dc:creator><![CDATA[tungthanh500]]></dc:creator><pubDate>Thu, 19 Aug 2021 00:44:35 GMT</pubDate></item><item><title><![CDATA[How we can filter the json and dynamically pass the data to create multiline chart in mango automation]]></title><description><![CDATA[@himanshu
It is the exact same concept.:
&lt;ma-state-params on-change="designer.parameters.dn = $stateParams.dn" update-params="designer.updateParams"&gt;&lt;/ma-state-params&gt;
this component takes the URL parameters and puts them into a object called designer.updateParams.  That object can be used anywhere now in the pages scope.
]]></description><link>https://forum.mango-os.com/topic/5165/how-we-can-filter-the-json-and-dynamically-pass-the-data-to-create-multiline-chart-in-mango-automation</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5165/how-we-can-filter-the-json-and-dynamically-pass-the-data-to-create-multiline-chart-in-mango-automation</guid><dc:creator><![CDATA[CraigWeb]]></dc:creator><pubDate>Fri, 23 Apr 2021 06:24:56 GMT</pubDate></item><item><title><![CDATA[Changed the tag value (the key stayed the same) - lost history data]]></title><description><![CDATA[Changing the tag will not cause loss of data.  Neither will changing the XID from within mango.  Something else must have happened.
]]></description><link>https://forum.mango-os.com/topic/5088/changed-the-tag-value-the-key-stayed-the-same-lost-history-data</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5088/changed-the-tag-value-the-key-stayed-the-same-lost-history-data</guid><dc:creator><![CDATA[CraigWeb]]></dc:creator><pubDate>Wed, 10 Feb 2021 12:33:11 GMT</pubDate></item><item><title><![CDATA[Mango 2.8.8 licensing price for modbus over 300 datapoints]]></title><link>https://forum.mango-os.com/topic/5079/mango-2-8-8-licensing-price-for-modbus-over-300-datapoints</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5079/mango-2-8-8-licensing-price-for-modbus-over-300-datapoints</guid><pubDate>Wed, 03 Feb 2021 20:28:09 GMT</pubDate></item><item><title><![CDATA[Does Mango support multi fps (frame per second) publish?]]></title><description><![CDATA[If the publisher is set to publish all it will publish every time the point updates. Even if it is multiple times a second.
]]></description><link>https://forum.mango-os.com/topic/5076/does-mango-support-multi-fps-frame-per-second-publish</link><guid isPermaLink="true">https://forum.mango-os.com/topic/5076/does-mango-support-multi-fps-frame-per-second-publish</guid><dc:creator><![CDATA[CraigWeb]]></dc:creator><pubDate>Mon, 01 Feb 2021 12:12:31 GMT</pubDate></item></channel></rss>