Connection checking

For information about connections, look at the Network Manager statistics. You can see these in the PI SMT Network Manager Statistics tool (select Operation > Network Manager Statistics). The pinetmgr process manages the remote procedure calls (RPCs) that Data Archive subsystems and processes use to communicate with each other.

For example, if PI Snapshot Subsystem (pisnapss) sends an event to PI Archive Subsystem (piarchss) for storage, the communication flows from pisnapss to pinetmgr to piarchss. If PI Archive Subsystem writes a message to the System Message Log, the communication flows from piarchss to pinetmgr to pimsgss.

The Network Manager Statistics tool shows a lot of information. Check for the following:

• In the BytesSent and BytesRecv columns, identify applications that are requesting or sending unusual amounts of data. If the value for an application or interface is large compared to other applications or interfaces of that type, then that might point to the problem connection. (Values in the BytesSent and BytesRecv columns from PINetMgr are always the highest.)

• What client processes are connected from which nodes.

• How long clients have been connected.

• In the RegAppType column, determine what type of application is connecting:

  • OSISDKApp indicates an SDK application.

  • OSIinterface indicates an interface.

• In the ProtocolVersion column, determine whether the connection is from an SDK or API application. A version number of 1.x indicates an API application. A version number of 3.x indicates an SDK application.