Optimize Cloud SQL instances with high number of out-of-memory events
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MySQL | PostgreSQL | SQL Server
This page describes the Cloud SQL instance out-of-memory (OOM) optimization recommender which helps you detect instances that have a high number of OOM events within the last seven days.
This recommender detects instances that have
a high number of OOM events. It then provides recommendations on how to optimize such
instances and improve performance. Recommendations are generated daily.
GET https://recommender.googleapis.com/v1/projects/PROJECT-ID/locations/LOCATION/recommenders/google.cloudsql.instance.PerformanceRecommender/recommendations
Replace the following:
PROJECT_ID: Your project ID.
LOCATION: A region where your instances are located, such as us-central1.
If the recommender detects instances with frequent OOM events, it lists them in a table. Each row shows the instance name, a brief recommendation, the current machine type, the recommended machine type, the location, and the last refresh date.
View insights and detailed recommendations
You can view insights and detailed recommendations for instances
that require an OOM optimization using the Google Cloud console,
gcloud CLI, or the Recommender API.
Console
Do one of the following:
On the Performance Recommendations page, click Performance recommendations card, click Frequent Out-of-Memory Best Practice. The recommendation panel appears, which contains insights and detailed recommendations for the instance.
On the Instances page, click Frequent Out-of-Memory Best Practice. The list of instances displays only those instances for which the recommendation applies.
gcloud CLI
To view insights and detailed recommendations about instances that require an OOM optimization, run the
gcloud recommender insights list
command as follows:
LOCATION: A region where your instances are located, such as us-central1.
API
To view insights and detailed recommendations about instances that require an OOM optimization, use the
Recommendations API, call the
insights.list
method as follows:
GET https://recommender.googleapis.com/v1/projects/PROJECT-ID/locations/LOCATION/insightTypes/google.cloudsql.instance.PerformanceInsight/insights
Replace the following:
PROJECT_ID: Your project ID.
LOCATION: A region where your instances are located, such as us-central1.
Apply recommendation
Evaluate the recommendation carefully and do any of the following:
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-28 UTC."],[],[],null,["# Optimize Cloud SQL instances with high number of out-of-memory events\n\n\u003cbr /\u003e\n\nMySQL \\| PostgreSQL \\| SQL Server\n\n\u003cbr /\u003e\n\n|\n| **Preview**\n|\n|\n| This feature is subject to the \"Pre-GA Offerings Terms\" in the General Service Terms section\n| of the [Service Specific Terms](/terms/service-terms#1).\n|\n| You can process personal data for this feature as outlined in the\n| [Cloud Data Processing\n| Addendum](/terms/data-processing-addendum), subject to the obligations and restrictions described in the agreement under\n| which you access Google Cloud.\n|\n| Pre-GA features are available \"as is\" and might have limited support.\n|\n| For more information, see the\n| [launch stage descriptions](/products#product-launch-stages).\n\nThis page describes the Cloud SQL instance out-of-memory (OOM) optimization [recommender](/recommender/docs/overview) which helps you detect instances that have a high number of OOM events within the last seven days.\n\nThis recommender detects instances that have\na high number of OOM events. It then provides recommendations on how to optimize such\ninstances and improve performance. Recommendations are generated daily.\n\nPricing\n-------\n\nThe Cloud SQL OOM optimization recommender is in the *Standard*\n[Recommender pricing tier](/recommender/pricing).\n\nBefore you begin\n================\n\nBefore you can view recommendations and insights, do the following:\n\n- To get the permissions to view and work with insights and recommendations, ensure that you have the required [Identity and Access Management (IAM) roles](/sql/docs/mysql/project-access-control#roles).\n\n For more information about IAM roles, see [IAM basic and predefined roles reference](/iam/docs/understanding-roles) and [Manage access to projects, folders, and organizations](/iam/docs/granting-changing-revoking-access).\n-\n\n\n Enable the Recommender API.\n\n\n [Enable the API](https://console.cloud.google.com/flows/enableapi?apiid=recommender.googleapis.com)\n\nList OOM optimization recommendations for an instance\n-----------------------------------------------------\n\nYou can list OOM optimization recommendations for an instance\nusing the Google Cloud console, [gcloud CLI](/sdk/gcloud), or the Recommender API. \n\n### Console\n\nTo list recommendations about instance performance by using the\n\nGoogle Cloud console, follow these steps:\n\n1. Go to the **Cloud SQL Instances** page.\n\n[Go to Cloud SQL Instances](https://console.cloud.google.com/sql/instances)\n\n1. Click **Expand Details** on the **Improve instance health by investigating issues and acting on recommendations** banner.\n\nAlternatively, follow these steps:\n\n1. Go to the **Recommendation Hub** . See also [Find and apply recommendations with the Recommendations](/recommender/docs/recommendation-hub/identify-configuration-problems).\n\n2. Click **Performance** in the **All recommendations** card.\n\n### gcloud CLI\n\nTo list OOM optimization recommendations for an instance using gcloud CLI, run the\n[`gcloud recommender recommendations list`](/sdk/gcloud/reference/recommender/recommendations/list)\ncommand as follows: \n\n```\ngcloud recommender recommendations list \\\n--project=PROJECT_ID \\\n--location=LOCATION \\\n--recommender=google.cloudsql.instance.PerformanceRecommender \\\n--filter=recommenderSubtype=MYSQL_FREQUENT_OUT_OF_MEMORY_BEST_PRACTICE\n```\n\nReplace the following:\n\n- \u003cvar translate=\"no\"\u003ePROJECT_ID\u003c/var\u003e: Your project ID.\n- \u003cvar translate=\"no\"\u003eLOCATION\u003c/var\u003e: A region where your instances are located, such as `us-central1`.\n\n### API\n\nTo list OOM optimization recommendations for an instance using the\n[Recommendations API](/recommender/docs/using-api), call the\n[`recommendations.list`](/recommender/docs/reference/rest/v1/projects.locations.recommenders.recommendations/list)\nmethod as follows: \n\n```\nGET https://recommender.googleapis.com/v1/projects/PROJECT-ID/locations/LOCATION/recommenders/google.cloudsql.instance.PerformanceRecommender/recommendations\n```\n\nReplace the following:\n\n- \u003cvar translate=\"no\"\u003ePROJECT_ID\u003c/var\u003e: Your project ID.\n- \u003cvar translate=\"no\"\u003eLOCATION\u003c/var\u003e: A region where your instances are located, such as `us-central1`.\n\nIf the recommender detects instances with frequent OOM events, it lists them in a table. Each row shows the instance name, a brief recommendation, the current machine type, the recommended machine type, the location, and the last refresh date.\n\nView insights and detailed recommendations\n------------------------------------------\n\nYou can view insights and detailed recommendations for instances\nthat require an OOM optimization using the Google Cloud console,\n[gcloud CLI](/sdk/gcloud), or the Recommender API. \n\n### Console\n\nDo one of the following:\n\n- On the **Performance Recommendations** page, click **Performance recommendations** card, click **Frequent Out-of-Memory Best Practice**. The recommendation panel appears, which contains insights and detailed recommendations for the instance.\n\n- On the **Instances** page, click **Frequent Out-of-Memory Best Practice**. The list of instances displays only those instances for which the recommendation applies.\n\n### gcloud CLI\n\nTo view insights and detailed recommendations about instances that require an OOM optimization, run the\n[`gcloud recommender insights list`](/sdk/gcloud/reference/recommender/insights/list)\ncommand as follows: \n\n```\ngcloud recommender insights list \\\n--project=PROJECT-ID \\\n--location=LOCATION \\\n--insight-type=google.cloudsql.instance.PerformanceInsight \\\n--filter=insightSubtype=MYSQL_FREQUENT_OUT_OF_MEMORY\n```\n\nReplace the following:\n\n- \u003cvar translate=\"no\"\u003ePROJECT_ID\u003c/var\u003e: Your project ID.\n- \u003cvar translate=\"no\"\u003eLOCATION\u003c/var\u003e: A region where your instances are located, such as `us-central1`.\n\n### API\n\nTo view insights and detailed recommendations about instances that require an OOM optimization, use the\n[Recommendations API](/recommender/docs/using-api), call the\n[`insights.list`](/recommender/docs/reference/rest/v1/projects.locations.insightTypes.insights/list)\nmethod as follows: \n\n```\nGET https://recommender.googleapis.com/v1/projects/PROJECT-ID/locations/LOCATION/insightTypes/google.cloudsql.instance.PerformanceInsight/insights\n```\n\nReplace the following:\n\n- \u003cvar translate=\"no\"\u003ePROJECT_ID\u003c/var\u003e: Your project ID.\n- \u003cvar translate=\"no\"\u003eLOCATION\u003c/var\u003e: A region where your instances are located, such as `us-central1`.\n\nApply recommendation\n--------------------\n\nEvaluate the recommendation carefully and do any of the following:\n\n- For more information, see [Optimize instance high memory usage](/sql/docs/mysql/optimize-high-memory-usage).\n- To dismiss the recommendation so that it's de-emphasized and appears dimmed, click **Dismiss**.\n- To close the panel without applying or dismissing the recommendation, click **Cancel**.\n\nWhat's next\n-----------\n\n- [Google Cloud recommenders](/recommender/docs/recommenders)\n- [About database observability](/sql/docs/mysql/observability)"]]