Jobs

This section describes and illustrates how to monitor and manage jobs. A job is a process that performs a certain task, such as capturing changes, refreshing data, integrating changes, comparing data. At any moment a job has a certain state. Jobs are managed by the Scheduler. Jobs running through the Scheduler have their output appended to the hub log, and in case of a job failure, the hub will automatically retry the job.

The Jobs page displays a list of all jobs managed by a hub, as well as various options to manage jobs. It also displays the following information about each job:

Field	Description
TYPE	A job type (Activate, Capture, Refresh, Integrate, Compare, Statistics gather)
CHANNEL	The name of a channel, to which a job belongs.
LOCATIONS	The name of a location, to which a job belongs.
STATE	A job state: ALERTING - if a job fails to run successfully, the Scheduler will change its state first to ALERTING, then RETRY and will eventually run again. DISABLED - if the job is disabled, it cannot be resumed, as opposed to SUSPENDED. DONE - for Activate, Refresh and Compare jobs, this state indicates that the most recent event of the corresponding type has been completed. ERROR - error(s) occurred during job execution. FAILED - the job execution is canceled. HANGING - If a job stays in state RUNNING for too long, it may be marked with state HANGING; if it finishes successfully, it will become PENDING. PENDING - the job is yet to be executed. READY - the job execution is completed. RETRYING - that the job failed and is restarted at least once during the job processing. RUNNING - the job execution is in progress. SUSPENDED - the job execution is paused and can be unsuspended, which means that it will go into PENDING or RUNNING state. WAITING - the job will run at a scheduled time.
RECENT ERRORS	The time when the most recent error occurred. If there are any job errors or warnings, the following notification is displayed at the top of the page. Click the View Scheduler Log button to open the Log Viewer dialog displaying information about all the job errors on the hub. Click the Clear All button to hide all the current errors and warnings from the page. After clearing the errors and warnings, only new ones will be displayed in the RECENT ERRORS column from now on. You can hide a specific error by clicking the cross icon next to it.
LATENCY	The time taken for a transaction committed on a source system to be replicated (captured and integrated) to a target system. This value allows you to analyze the delay in data replication. The graph is a link to the Statistics page of the corresponding channel.
VOLUME	An average number of integrated changes per the time range selected in the Graph Range filter.
CHANGES QUEUED	The number of captured changes queued on a hub to be integrated into a target location.
CAPTURE REWIND	Capture rewind shows you which period the job covered/captured since the last activation. It is only available for capture jobs. For example, if capture rewind is 6 days, that means that this capture job captured all changes that happened in the last 6 days. For a frozen hub, this time interval ends when the hub was frozen.

Filtering Jobs

By default, the page displays data about all jobs in the current hub. The top panel with multiple filtering options will help you to narrow down the data to view only the information you need.

Channels selector allows you to display only jobs related to a selected channel.
Locations selector allows you to display only jobs related to a selected location
Type selector allows you to display only jobs of a selected type(s).
Graph Range selector allows you to select the time range for the graphs displayed in the Latency and Changes Processed columns. The graphs will automatically update to show only that chosen period of time. Note that the Graph Range selector is not displayed when the two columns (LATENCY and CHANGES PROCESSED) are set to be hidden in the Columns menu.
Search field provides a full-text search across all records in the Jobs table to quickly find all occurrences of a word/number you type.

The panel also shows the total number of jobs currently displayed on the page including inactive jobs (jobs that have no events to process and no pending errors).

Managing Jobs

The following options to manage jobs are available at the top-right menu, as well as under the More options menu .

To select multiple jobs in one go, select the first job, hold the Shift key and then select the last job - all jobs in between the first and the last will be selected.

Option	Description
View Hub Log	View the runtime information and errors related to the entire hub in the Log Viewer dialog.
Suspend Jobs	Suspend a job or multiple jobs at once. `Since v6.1.0/3` When you suspend capture and/or integrate jobs in the RUNNING state, HVR enables a so-called 'graceful suspension' - a process that waits until the replication job cycle is completed before moving the job into the SUSPEND state. This ensures that no pending transactions are left as the job stops at the end of a cycle. During graceful suspension, the following dialog appears. Once the safe suspension is done, the dialog is closed automatically. There is also an option to do force suspend which will suspend the job immediately by killing the job process. However, note that the force suspension may leave the job in the PENDING state. For more information about job states, see section Scheduler - Job States.
Start Jobs	Start a job or multiple jobs at once. The job's current status will change to RUNNING.
Delete Jobs	Delete a job or multiple jobs at once.
Show Stats Job	Show the Stats Gathering job in the list of jobs.
Hide Stats Job (unless errors)	Hide the Stats Gathering job from the list of jobs unless there are errors on the hub. This option is displayed when the Show Stats Job option is enabled.
Freeze Hub	This will stop the Scheduler and stop all the jobs running on the hub. For more information, see Hub States.
Job System Attributes	Set a job attribute for SYSTEM job group. This opens the Job System Attributes dialog, where you can set default attributes for all jobs in the hub.
Job System Environment Variables	Set an environment variable for SYSTEM job group. This opens the Job System Environment Variables dialog, where you can set default environment variables for all jobs in the hub.
Show Start Page	Open the Start Page. This is a landing page that opens when you first access HVR web user interface. This page offers a starting point for new users that helps them build up a channel in the HVR Hub.

Every job has its own View Log button that opens the Log Viewer dialog showing the job's runtime information and errors, and also the More Options menu allowing you to manage every job separately.

Option	Description
Start Job	Changes the job state to RUNNING.
Suspend/Unsuspend Jobs	Suspend or unsuspend the job. `Since v6.1.0/3` When you suspend capture and/or integrate jobs in the RUNNING state, HVR enables a so-called 'graceful suspension' - a process that waits until the replication job cycle is completed before moving the job into the SUSPEND state. This ensures that no pending transactions are left as the job stops at the end of a cycle. During graceful suspension, the following dialog appears. Once the safe suspension is done, the dialog is closed automatically. There is also an option to do force suspend which will suspend the job immediately by killing the job process. However, note that the force suspension may leave the job in the PENDING state. For more information about job states, see section Scheduler - Job States.
Delete Job	Delete a job from the channel.
Go to Event	Open the Event Details page for the recent event associated with the job (applies only to the Activate, Compare, and Refresh jobs if they have DONE or RUNNING state).
Cancel Event	If the event is executed by the corresponding job, this execution is stopped. The event is canceled by setting the event status to CANCELED. Only events in the ACTIVE state can be canceled (e.g. activate, refresh or compare events). A canceled event will not be executed anymore.
Job Attributes	This opens the Job Attributes dialog, where you can set attributes for a specific job.
Environment Variables	This opens the Job Environment Variables dialog, where you can set environment variables for a specific job.
New Refresh	Start the refresh job once again. This applies only to a Refresh job.
New Compare	Start the compare job once again. This applies only to a Compare job.