当你遇到“unable to obtain connection from database”的错误时,可以按照以下步骤进行排查和解决: 检查数据库服务是否正在运行: 确保数据库服务已经启动并且正在运行。你可以通过操作系统的服务管理器或命令行工具来检查数据库服务的状态。 例如,对于MySQL数据库,你可以在命令行中使用以下命令检查服务状态(Linux/macOS...
问题列一遍，然后没有解答。几个都是这样。。。
A connection pool is a cache of database connections for reuse when future requests to the database need them. When the system runs out of available connections, and could not obtain a new connection from the connection pool, the bel...
https://harmonyosdevelopertest.devccsrnd.hwcloudtest.cn:3087/cn/docs/documentation/doc-guides-V3/...
DEBUG: Unable to resolve location classpath:db/callback. ERROR: Unexpected error org.flywaydb.core.internal.exception.FlywaySqlException: Unable to obtain connection from database (jdbc:mysql://epimiso-ap-ps1a:3376/misodb?useSSL=true&user=miso-lims&password=***&autoreconnect=true&useUnicode...
and from JBoss EAP 7, we have seen the below exception in the log: Raw java.sql.SQLException: IJ031012: Unable to obtain lock in 60 seconds: org.jboss.jca.adapters.jdbc.local.LocalManagedConnection at org.jboss.jca.adapters.jdbc.BaseWrapperManagedConnection.tryLock(BaseWrapperManagedConnection.ja...
WARN [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator] (ServerService Thread Pool -- 63) HHH000342: Could not obtain connection to query metadata : Unable to resolve name [org.hibernate.dialect.MariaDB53Dialect] as strategy [org.hibernate.dialect.Dialect] 14:45:16,816 ERROR [org...
If the ECS does not have an IP address, check whether DHCP has been enabled for the required subnet. Switch to the subnet details page and check whether the DHCP function has been enabled. For details, see Why Does My ECS Fail to Obtain an IP Address?Checking...
When "lazy refresh" strategy is enabled, the connector to check and refresh the certificate while opening a database connection, instead of using a scheduled task. SeeRefresh Strategy for Serverless Compute. To enable the lazy refresh strategy, add the JDBC connection propertycloudSqlRefreshStrategy...
您好，远程模拟器的资源在渐渐变少，您可以考虑使用本地模拟器或真机