Resource status classification
IMS classifies resource status to determine how much information needs to be stored in the resource structure or in local log records.
- Nonrecoverable Status
- Status only exists when the resource is active. Status is deleted when the resource becomes inactive and is not recovered at terminal logoff, user signoff, or IMS restart.
- Recoverable Status
- Status is recovered, but does not prevent the resource from being deleted across signoff, logoff, or IMS restart.
- Significant Status
- Status
is recovered and the resource is not deleted across signoff, logoff,
or IMS restart. Where the status
is maintained depends on whether the status is command or end-user.
- Command Significant Status
- Status relates to the resource command, such as STOP, TRACE, and MFSTEST. Status recovery is always maintained globally by RM in the resource structure, if defined. Status is unaffected by status recovery mode. Not all statuses set by commands are significant.
- End-User Significant Status
- Status relates to resource work: conversation, STSN, and Fast Path. The status frequently changes, which can affect performance. Therefore, you can specify the status recovery mode as either GLOBAL, LOCAL, or NONE.