Selectively allowing changes to a system

A data processing system comprising:

• a processor configured to initiate executable operations comprising:
• identifying a first change to a first portion of the system;
• identifying at least a second portion of the system that is, at least in part, dependent on the first portion;
• identifying at least one user who is assigned responsibility for maintaining the first portion or the second portion of the system, and determining an availability of the user to maintain the first portion or the second portion of the system during a time period beginning when the first change is initially scheduled for introduction into the system;
• and
• responsive to determining that the user is not sufficiently available to maintain the first portion or the second portion of the system during the time period, preventing the first change from being introduced into the system as initially scheduled for introduction into the system.

A computer program product for managing changes to a system, the computer program product comprising:

• a computer-readable storage medium having stored thereon program code that, when executed, configures a processor to perform executable operations comprising:
• identifying a first change to a first portion of the system;
• identifying at least a second portion of the system that is, at least in part, dependent on the first portion;
• identifying at least one user who is assigned responsibility for maintaining the first portion or the second portion of the system, and determining an availability of the user to maintain the first portion or the second portion of the system during a time period beginning when the first change is initially scheduled for introduction into the system;
• and
• responsive to determining that the user is not sufficiently available to maintain the first portion or the second portion of the system during the time period, preventing the first change from being introduced into the system as initially scheduled for introduction into the system.