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Sakai 11.x SQLTRansientConnectionExceptions
2016-05-13 13:17:49,041 WARN org.sakaiproject.event.impl.ClusterEventTracking$$EnhancerBySpringCGLIB$$d42ec2bd org.sakaiproject.event.impl.ClusterEventTracking - org.sakaiproject.event.impl.ClusterEventTracking$$EnhancerBySpringCGLIB$$d42ec2bd@15998ce3.writeBatchEvents: java.sql.SQLTransientConnectionException: sakai - Connection is not available, request timed out after 30000ms.
java.sql.SQLTransientConnectionException: sakai - Connection is not available, request timed out after 30000ms.
at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196)
at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:147)
at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:99)
at org.sakaiproject.db.impl.BasicSqlService.borrowConnection(BasicSqlService.java:260)
at org.sakaiproject.event.impl.ClusterEventTracking.writeBatchEvents(ClusterEventTracking.java:400)
at org.sakaiproject.event.impl.ClusterEventTracking.run(ClusterEventTracking.java:570)
at java.lang.Thread.run(Thread.java:745)
2016-05-13 13:16:20,714 WARN catalina-exec-44 org.sakaiproject.db.impl.BasicSqlService - Sql.dbRead: sql: select RESOURCE_ID from CONTENT_RESOURCE where (RESOURCE_ID = ?) /group/c90cd601-4b9b-44de-b1a3-1b2b4eeab3c8/Carillon.jpg
java.sql.SQLTransientConnectionException: sakai - Connection is not available, request timed out after 30000ms.
at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196)
at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:147)
at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:99)
at org.sakaiproject.db.impl.BasicSqlService.borrowConnection(BasicSqlService.java:260)
at org.sakaiproject.db.impl.BasicSqlService.dbRead(BasicSqlService.java:540)
at org.sakaiproject.db.impl.BasicSqlService.dbRead(BasicSqlService.java:471)
at org.sakaiproject.util.BaseDbDualSingleStorage.checkResource(BaseDbDualSingleStorage.java:336)
at org.sakaiproject.content.impl.DbContentService$DbStorage.checkResource(DbContentService.java:1539)
at org.sakaiproject.content.impl.BaseContentService$2.handleAccess(BaseContentService.java:7405)
at org.sakaiproject.access.tool.AccessServlet.dispatch(AccessServlet.java:348)
at org.sakaiproject.access.tool.AccessServlet.doGet(AccessServlet.java:194)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
at org.sakaiproject.vm.ComponentServlet.service(ComponentServlet.java:56)
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