Properties installed with Developer Sandboxes
The system properties available in Developer Sandboxes govern application behavior, enabling developers to configure and optimize their testing environments effectively.
Note: To open the System Properties [sys_properties] table, enter sys_properties.list in the navigation filter.
These properties are available for Developer Sandboxes.
|
Property |
Description |
Details |
|---|---|---|
|
|
Turns on sandboxes for the instance. The com.glide.dsb plugin doesn't enable sandboxes automatically.Type: true or false |
Set to true before you add the instance through license management. |
|
|
Number of nodes that run as a controller.- Type: number
|
Important: Reconfigure this property after installing the com.glide.dsb plugin to ensure the correct number of controller nodes for your sandbox capacity. Failure to reconfigure this property after installation can result in incorrect sandbox availability. |
|
|
Time in minutes that a node is considered healthy. An unhealthy node that's assigned to a sandbox can be remediated by assigning it to another sandbox. Remediation is the process of detecting a sandbox that should be running on a node but isn't, and then assigning another node to run on the sandbox.
|
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|
|
Number of seconds between status checks for a node expected to go offline in the sys_cluster_state table, which contains the nodes that are assigned to an instance.- Type: number
|
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|
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Number of minutes to wait for a node to shutdown, and have a Status of Offline in sys_cluster_state table.- Type: number
|
|
|
|
Default table config in Developer Sandboxes.- Type: string
|
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|
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Number of concurrent table creations in a sandbox.- Type: number
|
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Number of data copy plans to run concurrently during sandbox creation.- Type: number
|
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|
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Number of data copiers running at a time for each table.- Type: number
|
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Number of retries the Developer Sandboxes destroy code attempts to do clean up any leftover Developer Sandboxes tables.- Type: number
|
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|
|
Tables that will be preserved for recreating developer sandboxes post clone.- Type: string
|
Comma-delimited list of tables to preserve. If a table has is referenced here, its content in each sandbox is saved and preserved during clones, then restored post-clone in the re-created sandbox(es). This property is effective only when Developer Sandboxes are enabled via the glide.dev_sandbox.enabled property, and impacts only sandboxes. |
|
|
Frequency in seconds that the controller node checks if a sandbox has completed exporting its altered update sets.This property is used only when exporting sandbox update sets before an instance upgrade begins.
|
Decreasing the value may help the upgrade go faster but at the cost of extra checks. |
|
|
How long the controller node waits for a sandbox to export its altered update sets before an instance upgrade.If the timeout limit is reached, the upgrade continues regardless of export state.
|
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|
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Maximum limit of concurrent sandbox allocations/retirements events.- Type: number
|
Increasing the value enables more concurrent allocations/retirement, but could overload the database. |
|
|
Percentage of the sandboxes on the instance that are pre-created and kept in the pool for faster allocation.- Type: number
|
The pool never exceeds the number of sandboxes that aren't yet allocated. |
|
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Number of minutes that a pooled sandbox stays unclaimed before it's retired and replaced.- Type: number
|
|
---
title: Properties installed with Developer Sandboxes
description: The system properties available in Developer Sandboxes govern application behavior, enabling developers to configure and optimize their testing environments effectively.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/application-development/developer-sandboxes/dsb-properties-installed.html
release: australia
product: Developer Sandboxes
classification: developer-sandboxes
topic_type: reference
last_updated: "2026-10-20"
reading_time_minutes: 4
breadcrumb: [Install and configure, Developer Sandboxes, Build, AI Workflow Factory Prime, Agentic app development, Building applications]
---
# Properties installed with Developer Sandboxes
The system properties available in Developer Sandboxes govern application behavior, enabling developers to configure and optimize their testing environments effectively.
**Note:** To open the System Properties \[sys\_properties\] table, enter `sys_properties.list` in the navigation filter.
These properties are available for Developer Sandboxes.
<table id="table_ek4_ct3_xhc"><thead><tr><th>
Property
</th><th>
Description
</th><th>
Details
</th></tr></thead><tbody><tr><td>
`glide.dev_sandbox.enabled`
</td><td>
Turns on sandboxes for the instance. The com.glide.dsb plugin doesn't enable sandboxes automatically.Type: true or false
</td><td>
Set to true before you add the instance through license management.
</td></tr><tr><td>
`glide.dev_sandbox.num.controller`
</td><td>
Number of nodes that run as a controller.- Type: number
- Default value: 2
</td><td>
- Can't be 0.
- Increasing converts unassigned nodes to controller nodes.
- Decreasing converts unassigned nodes to nodes.
- More controller nodes mean you get fewer sandboxes.
**Important:** Reconfigure this property after installing the com.glide.dsb plugin to ensure the correct number of controller nodes for your sandbox capacity. Failure to reconfigure this property after installation can result in incorrect sandbox availability.
</td></tr><tr><td>
`glide.dev_sandbox.node.healthy_time_min`
</td><td>
Time in minutes that a node is considered healthy. An unhealthy node that's assigned to a sandbox can be remediated by assigning it to another sandbox. Remediation is the process of detecting a sandbox that should be running on a node but isn't, and then assigning another node to run on the sandbox.
- Type: number
- Default value: 10
</td><td>
- Increasing this value keeps a sandbox node up longer, so remediation happens less frequently.
- Decreasing it takes a node down faster, so remediation occurs more frequently.
- Do not set this value lower than the time it takes a node to restart, roughly 3 minutes. During a restart, the node is still considered healthy to prevent the remediator from reassigning sandboxes to another node.
</td></tr><tr><td>
`glide.dev_sandbox.node.poll_interval_seconds`
</td><td>
Number of seconds between status checks for a node expected to go offline in the sys\_cluster\_state table, which contains the nodes that are assigned to an instance.- Type: number
- Default value: 10
</td><td>
- Generally doesn't need to be changed.
- Used during sandbox retirement to determine how often a node is checked for being set to offline.
- Increasing means the polling happens more often.
- Decreasing means that the polling happens less often.
</td></tr><tr><td>
`glide.dev_sandbox.node.poll_timeout_min`
</td><td>
Number of minutes to wait for a node to shutdown, and have a **Status** of Offline in sys\_cluster\_state table.- Type: number
- Default value: 2
</td><td>
- Generally doesn't need to be changed.
- Used during sandbox retirement to determine how long to check for a sandbox node to be set to offline.
- Increasing means the polling happens longer.
- Decreasing means that the polling completes faster.
</td></tr><tr><td>
`glide.dev_sandbox.default_table_config`
</td><td>
Default table config in Developer Sandboxes.- Type: string
- Default value: shared\_table
- Other possible values:
- shared\_table
- full\_copy
- zero\_copy
</td><td>
- The full\_copy value isolates tables but uses much more database space and can make sandbox creation slower, especially with large datasets.
- The zero\_copy value also isolates tables with less initial disk space, but starts empty and may consume more space as data is added.
</td></tr><tr><td>
`glide.dev_sandbox.dsb_db_copier_threads`
</td><td>
Number of concurrent table creations in a sandbox.- Type: number
- Default value: 1
- Other possible values: 1-5
</td><td>
- Increasing threads can create more contention and load when creating sandboxes.
- **Warning:** Do not change this value without consulting your account manager.
</td></tr><tr><td>
`glide.db.dsb.data_copy_processor.threads `
</td><td>
Number of data copy plans to run concurrently during sandbox creation.- Type: number
- Default value: 1
- Other possible values: 1-5
</td><td>
- This value is multiplied by the glide.dev\_sandbox.dsb\_db\_copier\_threads value.
- Increasing threads can create more contention and load when creating sandboxes.
- **Warning:** Do not change this value without consulting your account manager.
</td></tr><tr><td>
`glide.db.dsb.data_copy_processor.chunk_copy.threads`
</td><td>
Number of data copiers running at a time for each table.- Type: number
- Default value: 5
- Other possible values: 1-5
</td><td>
- This value is multiplied by the glide.dev\_sandbox.dsb\_db\_copier\_threads and glide.db.dsb.data\_copy\_processor.threads values.
- Decreasing this value slows down sandbox creation.
</td></tr><tr><td>
`glide.dev_sandbox.cleanup_retries`
</td><td>
Number of retries the Developer Sandboxes destroy code attempts to do clean up any leftover Developer Sandboxes tables.- Type: number
- Default value: 3
</td><td>
</td></tr><tr><td>
`glide.dev_sandbox.backup_tables`
</td><td>
Tables that will be preserved for recreating developer sandboxes post clone.- Type: string
- Default value: sys\_repo\_config
</td><td>
Comma-delimited list of tables to preserve. If a table has is referenced here, its content in each sandbox is saved and preserved during clones, then restored post-clone in the re-created sandbox\(es\).
This property is effective only when Developer Sandboxes are enabled via the glide.dev\_sandbox.enabled property, and impacts only sandboxes.
</td></tr><tr><td>
`glide.dev_sandbox.export.poll_interval_seconds`
</td><td>
Frequency in seconds that the controller node checks if a sandbox has completed exporting its altered update sets.This property is used only when exporting sandbox update sets before an instance upgrade begins.
- Type: number
- Default value: 10
</td><td>
Decreasing the value may help the upgrade go faster but at the cost of extra checks.
</td></tr><tr><td>
`glide.dev_sandbox.export.poll_timeout_min`
</td><td>
How long the controller node waits for a sandbox to export its altered update sets before an instance upgrade.If the timeout limit is reached, the upgrade continues regardless of export state.
- Type: number
- Default value: 10
</td><td>
- Decreasing the value may result in unexported updates.
- Increasing the value helps to ensure that changes are exported, but can delay the upgrade.
</td></tr><tr><td>
`glide.dev_sandbox.lifecycle.max_concurrent_events`
</td><td>
Maximum limit of concurrent sandbox allocations/retirements events.- Type: number
- Default value: 5
</td><td>
Increasing the value enables more concurrent allocations/retirement, but could overload the database.
</td></tr><tr><td>
`glide.dev_sandbox.pool.factor`
</td><td>
Percentage of the sandboxes on the instance that are pre-created and kept in the pool for faster allocation.- Type: number
- Default value: 100
- Other possible values: 0-100
</td><td>
The pool never exceeds the number of sandboxes that aren't yet allocated.
</td></tr><tr><td>
`glide.dev_sandbox.pool.keep_alive_minutes`
</td><td>
Number of minutes that a pooled sandbox stays unclaimed before it's retired and replaced.- Type: number
- Default value: 1440 \(24 hours\)
- Other possible values: 1-525600
</td><td>
- Decreasing the value refreshes pooled sandboxes more often, so they stay closer to the current base instance state.
- Increasing the value keeps pooled sandboxes longer.
</td></tr></tbody>
</table>**Parent Topic:**[Developer Sandboxes installation and configuration](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/application-development/developer-sandboxes/dsb-configuring-landing.md)
| title | Properties installed with Developer Sandboxes |
| description | The system properties available in Developer Sandboxes govern application behavior, enabling developers to configure and optimize their testing environments effectively. |
| locale | en-US |
| canonical_url | https://www.servicenow.com/docs/r/australia/application-development/developer-sandboxes/dsb-properties-installed.html |
| release | australia |
| product | Developer Sandboxes |
| classification | developer-sandboxes |
| topic_type | reference |
| last_updated | 2026-10-20 |
| reading_time_minutes | 4 |
| breadcrumb | Install and configureDeveloper SandboxesBuildAI Workflow Factory PrimeAgentic app developmentBuilding applications |