Timing Expressions

Enterprise Definition Language › Using EDL with CA SRM › Special Statements › Timing Expressions

Timing Expressions

Timing expressions appear in the timing parameters of services. Use them to specify when and how often to execute the service. You can specify timing in the following ways:

As a given point in time or a range.
As a sequence of points in time.
A special case of timing expression is the keyword HOLD; it indicates that the service must be compiled and built, but not submitted for execution. Use this timing condition for services that you want to execute from the command line.

You can use the following designations in timing expressions:

DAY OF MONTH
BUSINESS_DAY OF WEEK
BUSINESS_DAY OF MONTH
WEEK OF MONTH
WEEK OF QUARTER
WEEK OF YEAR
MONTH OF QUARTER
MONTH OF YEAR
WEEKEND OF MONTH
WEEKEND OF QUARTER
WEEKEND OF YEAR

Examples of timing specified as a given point or range follow:

Ranges	Examples
Range Entire Day	To define a range that spans the entire day of 15 February 2003, enter the following: 2/15/2003
Range Between 15:00 and 0:00	To define a smaller range than the previous example, covering the time between 15:00 and 00:00 on 15 February 2003, enter the following: 2/15/2003 AFTER 15:00 To specify midnight, use 00:00, not 24:00.
Exact Time	To define a precise point in time on 15 February 2003, enter the following: 2/15/2003 AT 15:00 If you use the command AT, the service runs only at the specified time.
Sequence of Points	You can use the following to specify a sequence of points: EVERY MONDAY EVERY WEEK EVERY BUSINESS_DAY FROM 7:00 AM TO 3:00 PM EVERY MONDAY OR WEDNESDAY OR FRIDAY EVERY APRIL AND OCTOBER EVERY WEEK DURING JANUARY FROM MONDAY TO THURSDAY EVERY 2 HOURS You cannot mix AND and OR operators in the same timing expression.

Use the following special timing expressions only with services that are part of procedures. They let you specify the timing of a service in relation to the beginning or end of another service in the procedure. You identify services by their service ID (step) number within the procedure:

Examples	Statements
Beginning of Service When Step 3 Ends	To define the beginning of the service at the time when Step 3 ends, enter the following: AFTER END OF 3
Beginning of Service in Relation to Another Service in Same Procedure	To define the beginning of the service in relation to another service in the same procedure, enter the following: BEFORE START OF 5

Examples

Statements

Beginning of Service When Step 3 Ends

To define the beginning of the service at the time when Step 3 ends, enter the following:

AFTER END OF 3

Beginning of Service in Relation to Another Service in Same Procedure

To define the beginning of the service in relation to another service in the same procedure, enter the following:

BEFORE START OF 5

You can assign an absolute time to only one service per procedure; the timing of all other services is then derived from this absolute time. If Step 5 is scheduled to begin at 14:00, and the current step must be executed before Step 5 begins, the system subtracts the estimated time of execution of the current step from 14:00 to determine the start time of the current step.