Monitored and Supervised the DC Operator; who conducted a Systems’ Health Checks, Physical Machine's status checks; and mainly the replacement of the two new sets of backup tapes to be used for the next two weeks, which were conducted at the DataOne (colocation) site, 6th floor, IBM Plaza, Libis, Q.C. 
Monitored the Picked up and delivered the one (1) unit of CISCO Switch Router; from Midland Bldg. 4th floor and to the D1 site, respectively by DC Optr1. The said appliance was required to be tested for 24 Hours in the Staging Area of D1 facility, from the delivery 24 Dec. in the Morning and to the next Morning of 25 Dec. 2021.
Supervised the set up and installation of the said Router by DC Optr2 as scheduled, the testing for 24 Hours at the D1 Staging area. He then proceed with the set up at our PV and at Rack 1. Ping test was then connected; and confirmed by the Network Operation Lead at 10:09 H, that the PLDT Metro E is already started Up.
In the early Morning of the 25th Dec. 2021; DC Optrs reported and encountered a DSPMSG of 'System Job Tables nearing Capacity' at Prod5. I immediately changed the SYSVAL QMAXJOB from 600K to 800K; by then SysDev Lead had already deleted some spooled files that decreases the Sys Job Tables' count. SysDev Lead asked to further investigate. This was immediately consulted to our vendor/IBM, if where the 400K+ Job counts came from. I conducted and investigated it further; discovered as an initial results that the User ASSANTOS, were running Jobs TRF_RECEIVE which is like endlessly. I asked and confirmed that either we *Hold the Subsystems or the JOBQ where the jobs were running and then the SysDev Lead had ended the said jobs with issues.
The DC Optrs with the Daily Backup at the TAP01 that were just replaced for the 4th time, had again encountered an error and this time an "Interface error in device TAP01 and the job save or restored ended abnormally". This was immediately escalated back to the IBM Support for another investigati