Locating the DBRC trace

The DBRC trace is in the IMS-formatted portion of an IMS-formatted dump. There are four ways you can locate the DBRC trace.

Method 1

Find the trace in the DBRC section of the IMS offline formatted dump.

Method 2

Find any DSPxxxxx module in the Save Area trace of the dump. For most DSPxxxxx modules marked ENTERED VIA CALL, register 5 contains the address of the request level control block (RQB). Offset X'38' in the RQB contains the address of router storage. Offset X'1C' in router storage contains the address of the DBRC trace.

In certain situations, register 5 does not point to the RQB. If this is the case, use method 3 or method 4.

Method 3

The trace is in subpool 0. If the dump has an index, look in the index to locate subpool 0. Scan this portion of the dump for eye catcher TRACETBL, which identifies the beginning of the trace.

Method 4

If you are looking at a dump online, search for eye catcher TRACETBL or GETFEED. If you search for the GETFEED eye catcher, you might first find it within DBRC modules. Search until you find the GETFEED eye catcher in the DBRC trace. Scroll to the beginning of the trace.