Monitor Endpoints . Check log parallelism! Since TCP must guarantee for all data to be successfully delivered, lost packets need to be retransmitted. Their usefulness breaks down when measuring throughput within a local-area network. I have issues with limiting DL throughput. Adobe Experience League. To troubleshoot network connectivity issues for the Cisco CSR 1000v, do the following: Verify that there is an active and unexpired license installed on the VM. OS diagnostic data can also be very helpful, such as OSWatcher (or ExaWatcher, for Exadata), obviously even more so when standby is not open. A more reliable way is to do the packet capture with a tool like tcpdump, since with tcpdump you can apply numerous filter (by source, destination, interface etc.) Views. To set up the Grafana dashboards shown in this article: Configure your Databricks cluster to send telemetry to a Log Analytics workspace, using the … If you're having trouble with one of the devices connected to your home network, you can use the BlueCurve home mobile app (Apple App Store or Google Play) or web portal (internet.shaw.ca) to diagnose and resolve the problem.. Open the BlueCurve Home mobile app or web portal. The most important stage of troubleshooting is the correct identification of the nature of the issue, e.g. Performance troubleshooting as exact science. One of the most common sources of confusion with respect to network performance is wide-spread perception that this is something that can be described with a single number (often measured by ping or similar utility). Now, we are faced with throughput problems: Running an FTP transfer from site to DC works fine at about 10Mb/s which is line speed. ( Log Out /  This is done by either LGWR or ARC process (I believe for synchronous replication LGWR is the only possibility, but I’m not entirely sure). So it really pays for a DBA to speak network administrator’s language so to say. We strongly recommend examining your network as a whole when troubleshooting any throughput issues. Labels: Labels: Wireless Security; 13393. If you see DataGuard-related wait events such as «LGWR-LNS wait on channel», it’s the DataGuard, otherwise it’s probably something local. X$ tables and V$/GV$ views based on them are, however, different, so they (and first of all, V$ASH/GV$ASH) become the main source of diagnostic information on the database side. Vinay Sharma ‎01-18-2015 03:21 AM. However, the overhead due to detection and re-sending of lost packets affects both the available bandwidth and the effective latency (more about that later). TIP: Check with the manufacturer for all devices directly connected to a SonicWall Interface and make sure the Duplex and Link Speed Settings are optimally set. It is normal for the Internet connection to have bandwidth problems if there are too many people connected to the network. redo processing on the standby side inevitably revolves around applying redo from the primary as it doesn’t produce its own redo, which means there is little for standby LGWR to do). In this article I describe the basic mechanics of TCP and DataGuard as well as relevant performance metrics on the database, OS and network sides. Now, we are faced with throughput problems: Running an FTP transfer from site to DC works fine at about 10Mb/s which is line speed. Wireless Throughput issues Troubleshooting. The following steps can help to narrow down the scope of the issue: Create a test SSID in NAT mode and try to connect again with a client that is experiencing issues. 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