方法服务器日志中充斥着大量数据库相关错误，例如 Windchill PDMLink 中的“连接已关闭”错误。

• MethodServer 日志中充斥着数据库连接错误：

2024-01-18 15:09:11,265 ERROR [com.ptc.core.components.dataUtilities.worker-16] com.ptc.core.components.beans.DataUtilityBean Org1User10 - Exception happened calling setModelData for DataUtility : com.ptc.windchill.enterprise.wip.datautilities.ShareStatusDataUtility@4e18191b (wt.pom.pomResource/0) wt.pom.PersistenceException: A persistence error occurred. System message follows:
Nested exception is: wt.pom.DatastoreException: A SQL error has occurred for the statement "SELECT ...". Database system message follows:
Nested exception is: java.sql.SQLRecoverableException: Closed Connection

• 这似乎只会影响com.ptc.core.components.dataUtilities.worker-*线程
• 线程在数据库连接错误发生之前就被中断了：

2024-01-18 15:09:09,669 WARN  [com.ptc.core.components.dataUtilities.worker-12] wt.method.server Org1User9 - Interrupting thread com.ptc.core.components.dataUtilities.worker-16
2024-01-18 15:09:09,669 WARN  [com.ptc.core.components.dataUtilities.worker-12] wt.pds.queryCancel Org1User9 - QueryContext.cancel(): cancelling

• 以下是一个使用示例：
  • 在执行跳转到下一页的操作时，间歇性出现错误“状态/家庭共享”列显示“??? 符号”。
  • 用户在产品文件夹页面加载滚动时遇到“？？？”和红眼错误。
  • 错误堆栈跟踪：

2023-12-14 14:58:26,712 ERROR [com.ptc.core.components.dataUtilities.worker-60] com.ptc.core.components.beans.DataUtilityBean Z10736 - Exception happened calling setModelData for DataUtility : com.ptc.windchill.enterprise.wip.datautilities.ShareStatusDataUtility@62d326b1 (wt.pom.pomResource/0) wt.pom.PersistenceException: A persistence error occurred. System message follows:
Nested exception is: wt.pom.DatastoreException: A SQL error has occurred for the statement "SELECT A0.classnamekeyroleBObjectRef,A0.idA3B5,A0.classnamekeyroleAObjectRef,A0.idA3A5 FROM CheckoutLink A0 WHERE ((A0.idA3A5 IN (?,?,?,?,?,?,?,?,?,?,?,?,?,...,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)))". Database system message follows:
Nested exception is: java.sql.SQLRecoverableException: Closed Connection

或者

 Nested exception is: wt.pom.DatastoreException: A SQL error has occurred. Database system message follows: Nested exception is: java.sql.SQLRecoverableException: IO Error: Socket read interrupted

• Task 表中的列值为空或显示乱码，带有问号“ ??? ”。

ava.lang.NullPointerException
at com.ptc.windchill.enterprise.work.assignmentslist.dataUtilities.AssignmentsSubjectNameDataUtility.getWorkItemSubjectDisplayName(AssignmentsSubjectNameDataUtility.java:186)
at com.ptc.windchill.enterprise.work.assignmentslist.dataUtilities.AssignmentsSubjectNameDataUtility.handleAssignmentSubject(AssignmentsSubjectNameDataUtility.java:144)
at com.ptc.windchill.enterprise.work.assignmentslist.dataUtilities.AssignmentsSubjectNameDataUtility.getDataValue(AssignmentsSubjectNameDataUtility.java:122)

• 打开文件夹浏览器时，状态栏显示“???”，并出现警告“尝试获取字形时发生异常：null”。