RE: Waveform data in a data storage system

[Žiga Oven via Tech-talk <tech-talk at aps.anl.gov>]

Hi,

 

Archiver appliance uses the default value of the EPICS_CA_MAX_ARRAY_BYTES of 16342.
This means that any array that is bigger that 16kb will not be archived.

 

Please check that your archiver has correct CA configuration.

 

Best regards,

 

Žiga

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of ??? via Tech-talk
Sent: Tuesday, October 17, 2023 5:14 AM
To: tech-talk at aps.anl.gov
Subject: Waveform data in a data storage system

 

Hi,

I was trying to store some waveform data using The EPICS Archiver Appliance, but the storage failed.

The PV names of the waveform data are as follows:

AC-LA-INJ1-BI:SBPM02-E:CH4_RAW_WAVEFORM

The error message is as follows:

61369 [JCA Command Thread] ERROR org.epics.archiverappliance.engine.pv.EPICS_V3_PV  - While processing a handleConnected for AC-LA-INJ1-BI:SBPM02-E:CH4_RAW_WAVEFORM.SCAN; the channel is not in a connected state.

63336 [PVNameDispatcherPVNameEvents 11] DEBUG org.epics.archiverappliance.engine.metadata.MetaGet  - Got value for NAME$ for pv AC-LA-INJ1-BI:SBPM02-E:CH4_RAW_WAVEFORM with timestamp Oct/13/2023 14:39:23 +08:00

61373 [PVNameDispatcherPVNameEvents 7] DEBUG org.epics.archiverappliance.engine.pv.EPICS_V3_PV  - Connection changed for pv AC-LA-INJ1-BI:SBPM02-E:CH4_RAW_WAVEFORM

61773 [JCA Command Thread] ERROR org.epics.archiverappliance.engine.pv.EPICS_V3_PV  - When trying to establish a subscription, there is already a subscription for AC-LA-INJ1-BI:SBPM02-E:CH4_RAW_WAVEFORM

61773 [JCA Command Thread] ERROR org.epics.archiverappliance.engine.pv.EPICS_V3_PV  - When trying to establish a subscription, there is already a subscription for AC-LA-INJ1-BI:SBPM02-E:CH4_RAW_WAVEFORM

I don't think there is a problem with the data storage system, other types of data can be stored normally. The server can also obtain data normally, what causes storage failure?