# CronJob Allows Concurrent Runs | ZopNight

> A slow run overlaps the next one, so two copies process the same work and can corrupt shared state or duplicate an external effect.

Source: https://zop.dev/zopnight/rules/cronjob-allows-concurrent-runs

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_Governance · Low severity_

## CronJob Allows Concurrent Runs

A slow run overlaps the next one, so two copies process the same work and can corrupt shared state or duplicate an external effect.

- 3 — clouds covered
- Low — severity
- Compliance — where it shows up
- Manual — fix, change spelled out

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## Found, explained, handed over.

Where the estate departs from your policies, frameworks and tagging rules.

- 01. Detect — ZopNight checks this automatically across AWS, Azure and Google Cloud, with read-only access to the account.
- 02. Explain — Every finding says exactly what to change: Forbid concurrent runs on the cronjob.
- 03. Fix — The finding opens with the change already spelled out, so the fix is one ticket, not an investigation.

- applies_to_fallback: Any resource in the account
- where_it_appears: The Compliance tab of Recommendations, with every affected resource listed.

## Related

- [CronJob Never Scheduled](https://zop.dev/zopnight/rules/cronjob-never-scheduled)
- [Suspended CronJob](https://zop.dev/zopnight/rules/suspended-cronjob)
- [ResourceQuota Exhausted](https://zop.dev/zopnight/rules/resourcequota-exhausted)
- [ResourceQuota Near Limit](https://zop.dev/zopnight/rules/resourcequota-near-limit)
- [Snowflake Large Cold Table](https://zop.dev/zopnight/rules/snowflake-large-cold-table)
- [Snowflake Steady Baseline, Consider Capacity Pricing](https://zop.dev/zopnight/rules/snowflake-steady-baseline-consider-capacity-pricing)

## See the governance findings in your account.

Connect a read-only role and the first pass runs on your own estate. This check, and the rest of the catalogue, with it.

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