Hello! I do not know if the question has evolved, but .... I solved it by changing the configuration of the file opcua_address_space_chunk_manager.py, highlighted below. I realize that this problem is due to the number of TAGs on the OPC server, in this configuration I can read an OPC server with almost 2,000 TAGs. / opt / splunk / etc / apps / Splunk_TA_opcua / bin. OpcUaAddressSpaceChunkManager class (object): OPCUA_ADDRESS_SPACE_CHECKPOINT_DIR = 'ta_opcua_address_space' 10 minutes OPCUA_ADDRESS_SPACE_EXPIRE_TIME = 600 8 MB OPCUA_ADDRESS_SPACE_CHUNK_SIZE = 8*1024*1024 ... View more