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Business Systems Hours & Downtime

Find hours of operation and scheduled downtimes for business systems.

Scheduled downtimes for business systems

  • Link Family, Blink, Darwin, SQL-DSE, and other UNIX services:
    • No maintenance is currently scheduled.
  • IFIS, ISIS, PPS, and other mainframe services:
    • No maintenance is currently scheduled.

Business systems hours

System Availability Total Daily Hours
Telephone System Continuous 24 hours
Campus Network Continuous 24 hours
ISIS Online 7 a.m.- midnight 17 hours (Notes 2, 5)
IFIS Online 6 a.m.- midnight 18 hours (Notes 2, 3, 5)
PPS Online 7 a.m. - 7 p.m.
Unavailable Sunday
12 hours (Note 4)
DataLink Continuous 24 hours (Note 6)
EmployeeLink 2 a.m. - 8 p.m. 18 hours not in payroll cycles (Note 2)
7 a.m. - 8 p.m. 13 hours during payroll cycles (Note 4)
Continuous 24 hours (Note 6)
FinancialLink Continuous 24 hours (Note 6)
6 a.m. - midnight 18 hours for transactions (Note 3)
TritonLink Continuous 24 hours for public data
7 a.m. - midnight 17 hours for personal data (Note 2)
TravelLink 7 a.m. - midnight 17 hours (Note 3)
HOPPER Continuous 24 hours (Note 6)
SQL-DSE Continuous 24 hours (Note 6
DSE Continuous 24 hours (Notes 2, 5)
UNEX 5 a.m. - 11 p.m. 18 hours (Note 2)
Note 1: The third and fourth weekends of each month are reserved for normal system maintenance between 7 p.m. and 7 a.m. Saturday and Sunday. These hours may be altered as needed. Exceptions:
  • The second weekend of July and first and second weekends of August are excluded due to fiscal ledger processing.
  • The fourth weekend of September is excluded due to heavy registration activity.
(Major system upgrades and emergency maintenances are not restricted to this rule but will be scheduled as required and when time is available. See Note 2.)

Note 2: Saturday, Sunday, and holiday hours of availability for general use may be limited due to major upgrades. Normally, this downtime will be scheduled at or after 7 p.m. Some maintenance (e.g. new IFIS releases) will require an application to be unavailable for an entire day or weekend. When maintenance is required and a change is made to the hours of availability, ITS will issue an online broadcast message to give as much advance notice as possible. This broadcast information will also be shown at the top of this page. When there's a major change scheduled which will significantly reduce the available hours, we will e-mail or telephone key clients to coordinate the change.

Note 3: IFIS monthly ledger processing occurs the first or second weekend of every month; therefore, the first or second Saturday of each month, IFIS will be unavailable. ITS will issue an online broadcast message to give as much advance notice as possible.

Note 4: Payroll cycles occur every other Thursday and approximately the fifth working day from the end of the month.

Note 5: IFIS DSE and ISIS DSE are unavailable for 10 minutes between midnight and 12:10 a.m. daily.

Note 6: The Purchasing database is not available 3 - 7:30 a.m. Other database components may be unavailable for up to two hours each day for maintenance and backup purposes.

Note 7: Once or twice a quarter when long batch jobs are scheduled, online hours may be brought down an hour or two earlier than listed. ITS will issue an online broadcast message to give as much advance notice as possible.

Note: this page has a friendly link that's easy to remember: http://blink.ucsd.edu/go/systemhours