This screen provides summary RUJ and AIJ journal I/O information for all processes activated to collect global statistics using the Process Monitoring facility. The processes displayed on this screen have previously activated their global statistics collection. Process global statistic collection can be either implicitly activated by the database monitor, or explicitly activated by the RMU Show Statistic utility. This screen provides the following information: o Process.ID The process ID for the current process, assigned by the operating system, and the stream ID, assigned by the database. If "G" is appended to the process ID, the process had been activated for global statistics collection; this is the normal case. Server processes will be designated with the "s" tag. o RUJ.Reads This field gives the number of read QIOs (queued I/O requests) issued to the database recovery-unit journal (.RUJ) files. This operation reads before-image records from the RUJ file to roll back a verb or a transaction. This statistic field includes both synchronous and asynchronous I/O read requests. o RUJ.Writes This field gives the number of write QIOs (queued I/O requests) issued to the database recovery-unit journal (.RUJ) files. This operation writes before-image records to the RUJ file in case a verb or transaction must be rolled back. Before-images must be written to the RUJ file before the corresponding database page can be written back to the database. This statistic field includes both synchronous and asynchronous I/O write requests. o RUJ.Extend This field identifies the number of times an RUJ file has been extended. Ideally, this value should be "0" or as close to "0" as possible. Each RUJ file extension represents a performance bottleneck that is easily resolved. o AIJ.Reads The number of read QIOs issued to the database after-image journal (.AIJ) file. If after-image journaling is not enabled for the database this statistic will be zero. This statistic field includes both synchronous and asynchronous I/O read requests. o AIJ.Writes This field gives the total number of write QIOs (queued I/O requests) issued to the database after-image journal (.AIJ) file. If after-image journaling is not enabled for the database, this statistic will be zero. This operation writes after-image records to the after-image journal to facilitate rollforward recovery using the RMU Recover utility. This statistic field includes both synchronous and asynchronous I/O write requests. o AIJ.Extend This field identifies the number of times an after-image journal has been extended. Ideally, this value should be "0" or as close to "0" as possible. Each AIJ file extension represents a performance bottleneck that is easily resolved.