GET https://recommender.googleapis.com/v1beta1/projects/PROJECT-ID/locations/LOCATION/recommenders/google.cloudsql.instance.PerformanceRecommender.MySqlHighNumberOfTablesBestPractice/recommendations
GET https://recommender.googleapis.com/v1beta1/projects/PROJECT-ID/locations/LOCATION/insightTypes/google.cloudsql.instance.PerformanceRecommender.MySqlHighNumberOfTables/insights
次のように置き換えます。
PROJECT_ID: プロジェクト ID。
LOCATION: us-central1 などのリージョン。
次の表では、パフォーマンス改善に役立つ Cloud SQL の上位テーブル Recommender が生成する分析情報と推奨事項を示します。サブタイプは、gcloud CLI と API の結果に表示されます。
テーブルの数をすぐに減らすことができない場合は、innodb_file_per_table フラグを OFF に設定することで、テーブル数が多い場合にインスタンスが受ける影響を軽減できます。innodb_file_per_table フラグの値を OFF にする方法については、データベース フラグを構成するをご覧ください。ただし、この設定はインスタンスを SLA 準拠に戻すものではありません。運用ガイドラインをご確認ください。
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["わかりにくい","hardToUnderstand","thumb-down"],["情報またはサンプルコードが不正確","incorrectInformationOrSampleCode","thumb-down"],["必要な情報 / サンプルがない","missingTheInformationSamplesINeed","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-09-04 UTC。"],[],[],null,["# Manage high number of tables\n\n\u003cbr /\u003e\n\nMySQL \\| PostgreSQL \\| SQL Server\n\n\u003cbr /\u003e\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| 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\nThe Cloud SQL high-number-of-tables [recommender](/recommender/docs/overview) helps you detect instances\nwhose table count is too high and close to the SLA limit. It then provides recommendations\non how to optimize such instances and improve instance performance.\n\nThis page describes how the high-number-of-tables recommender works and how\nyou can use it.\n\nHow it works\n------------\n\nIf you have 50,000 or more database tables on a single instance, it could result\nin the instance becoming unresponsive or unable to perform maintenance operations,\nand the instance is not covered by the SLA.\n\nThe Cloud SQL high-number-of-tables recommender analyzes metrics for the number\nof tables on a Cloud SQL MySQL instance. If the number of tables is larger than or\nequal to 80% of the SLA limit, which allows for 50,000 tables, the instance is considered\nto have a high number of tables.\n| **Note:** Recommendations are generated daily.\n\nPricing\n-------\n\nThe Cloud SQL high-number-of-open-tables recommender is in the *Standard* [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 [roles](/sql/docs/mysql/project-access-control#roles).\n\n For more information about roles, see [understanding roles](/iam/docs/understanding-roles) and [granting IAM permissions](/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 Improve Instance Performance recommendations\n-------------------------------------------------\n\nYou can list the Improve Instance Performance recommendations by\nusing the Google Cloud console, [gcloud CLI](/sdk/gcloud), or the Recommender API.\n\nThe improve instance performance recommendations are shown only if you have instances that\nare nearing performance threshold limits. \n\n### Console\n\nTo list recommendations about instance performance by using the\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)\n2. Click **View all** on the Manage high number of tables recommendations banner.\n\nAlternatively, follow these steps:\n\n1. Go to the **Recommendation Hub** . See also [Getting started with Recommendation Hub](/recommender/docs/recommendation-hub/identify-configuration-problems).\n\n [Go to the Recommendation Hub](https://console.cloud.google.com/home/recommendations/)\n2. In the **Improve Cloud SQL Instance Performance** card, click **View all**.\n\n3. Select the instances with **Manage high number of tables** recommendation.\n\n### gcloud CLI\n\nTo list Improve Instance Performance recommendations by 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_HIGH_NUMBER_OF_TABLES_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, such as `us-central1`\n\n### API\n\nTo list Improve Instance Performance recommendations by using the\n[Recommendations API](/recommender/docs/using-api), call the\n[`recommendations.list`](/recommender/docs/reference/rest/v1beta1/projects.locations.recommenders.recommendations/list)\nmethod as follows: \n\n```\nGET https://recommender.googleapis.com/v1beta1/projects/PROJECT-ID/locations/LOCATION/recommenders/google.cloudsql.instance.PerformanceRecommender.MySqlHighNumberOfTablesBestPractice/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, such as `us-central1`.\n\nIf the recommender detects instances with high number of tables, it lists them in a\ntable with other performance recommendations.\nEach row shows the instance ID, a brief recommendation, database engine, the location, and the last refresh date.\n\nView insights and detailed recommendations\n------------------------------------------\n\nYou can view insights and detailed recommendations about instances\nthat have a high number of tables by using the Google Cloud console,\n`gcloud CLI`, or the Recommender API. \n\n### Console\n\nTo view insights and detailed recommendations about instances that are close to the performance threshold by using the Google Cloud console, click the recommendation\nlink in the list of instances.\n\n### gcloud CLI\n\nTo view insights and detailed recommendations about instances that are close to the performance threshold by using `gcloud CLI`, 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_HIGH_NUMBER_OF_TABLES\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, such as `us-central1`.\n\n### API\n\nTo view insights and detailed recommendations about instances that are close to the performance threshold\nby using the [Recommendations API](/recommender/docs/using-api),\ncall the [`insights.list`](/recommender/docs/reference/rest/v1beta1/projects.locations.insightTypes.insights/list)\nmethod as follows: \n\n```\nGET https://recommender.googleapis.com/v1beta1/projects/PROJECT-ID/locations/LOCATION/insightTypes/google.cloudsql.instance.PerformanceRecommender.MySqlHighNumberOfTables/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, such as `us-central1`.\n\nThe following table lists the insight and recommendation that the Cloud SQL\nhigh-number-of-open-tables recommender generates to help you improve performance.\nThe subtypes are visible in the `gcloud CLI` and API results.\n\nApply recommendations\n---------------------\n\nEvaluate the recommendations carefully and do any of the following:\n\n- To examine the instance, click **View instance** . See [Optimize the performance of your instance](#optimize-performance)\n and follow the recommendations.\n\n- To dismiss the recommendation so that it's de-emphasized and appears dimmed,\n click **Dismiss**.\n\n- To close the panel without applying or dismissing the recommendation, click\n **Cancel**.\n\n### Optimize the performance of your instance\n\n- [Edit](/sql/docs/mysql/edit-instance) your instance to increase the number of vCPUs\n to at least 32 cores and the memory size to at least 200 GB.\n This increases the instance's [table limit](/sql/docs/mysql/quotas#table_limit) from 50,000 to 500,000.\n\n | **Caution:** This operation can lead to an increase in cost. Additionally, it triggers a restart, which can cause downtime on the instance.\n- Drop unnecessary tables:\n\n ```\n DROP TABLE TABLE_NAME; \n ```\n\n Replace the following:\n - \u003cvar translate=\"no\"\u003eTABLE_NAME\u003c/var\u003e: Name of the table you intend to drop.\n- Reduce the number of tables per instance by splitting the database across multiple instances to keep the number of tables in each\n instance within the recommended limits.\n\n- If you cannot immediately reduce the number of tables, you can reduce the likelihood\n of your instance being impacted by the high table\n count by setting the `innodb_file_per_table` flag to OFF. To turn off the value of\n the `innodb_file_per_table` flag, see [Configure a database flag](/sql/docs/mysql/flags?hl=en#config).\n However, this setting does not bring the instance back into SLA compliance.\n See these [operational guidelines](/sql/docs/mysql/operational-guidelines?hl=en#tables).\n\n- Use a general tablespace to create tables or move existing tables to a general tablespace.\n To learn more, see [MySQL documentation on general tablespaces](https://dev.mysql.com/doc/refman/8.0/en/general-tablespaces.html).\n\nWhat's next\n-----------\n\n- [Increase the table open cache size](/sql/docs/mysql/recommender-high-number-of-open-tables)\n- [Monitor disk availability](/sql/docs/mysql/using-ood-recommender)\n- [Identify idle Cloud SQL instances](/sql/docs/mysql/recommender-sql-idle)\n- [Reduce overprovisioned Cloud SQL instances](/sql/docs/mysql/recommender-sql-overprovisioned)\n- Explore [Google Cloud recommenders](/recommender/docs/recommenders)"]]
