The BAM internal trace facility provides an ongoing record of internal software events occurring during BSAM, BPAM or QSAM I/O operations in chronological order. When you activate the BAM internal tracing, BAM starts it during the data set's DCB OPEN processing and it runs continuously until the DCB is closed. The BAM internal trace facility creates records that are placed into the data set's trace table. This data set's DCB trace table resides in the private area of storage within the address space.