3451120 - Jamming detected during change operation.

Odata request fails, /n/IWFND/ERROR_LOG shows:

.ERROR_CONTEXT    
..ERROR_INFO    Jamming detected during change operation.
..ERROR_RESOLUTION    
...SAP_NOTE    See SAP Note 1797736 for error analysis
...LINK_TO_SAP_NOTE    https://service.sap.com/sap/support/notes/1797736
..Exceptions    
.../IWCOR/CX_DS_INTERNAL_ERROR    
....Text    In the context of Data Services an unknown internal server error occurred
....Source    
.....Program    SAPMHTTP
...CX_SY_NO_HANDLER    
....Text    An exception with the type CX_SY_OPEN_SQL_DB was raised, but was not handled locally or declared in a RAISING clause.
....Attributes    
.....CLASSNAME    CX_SY_OPEN_SQL_DB
....Source    
.....Program    SAPLSZA0
.....Include    LSZA0U47
.....Line    1
...CX_SY_OPEN_SQL_DB    
....Text    Jamming detected during change operation.
....Attributes    
.....SQLCODE    133         <<<<<<<<<<<<<<<<<<<<<<<<real error
....Source    
.....Program    SAPLSZA0
.....Include    LSZA0U47

SAP Gateway.

Jamming detected during change operation, 133, CX_SY_OPEN_SQL_DB, CAP, /IWCOR/CX_DS_INTERNAL_ERROR  , KBA , OPU-GW-COR , Framework , Problem