Encountering "SQLServerException: The statement is closed." after update of JBoss EAP and/or update of the Microsoft SQL Server JDBC driver

Solution Verified - Updated -


  • JBoss is configured with prepared-statement-cache-size > 0 (i.e. to enable pool-managed prepared statement caching)
  • When a prepared statement is used a second time (after having previously been used in a different transaction or request context), the Microsoft SQL Server driver raises the exception below

    ... com.microsoft.sqlserver.jdbc.SQLServerException: The statement is closed.
            at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:234)
            at com.microsoft.sqlserver.jdbc.SQLServerStatement.checkClosed(SQLServerStatement.java:1065)
  • Issue encountered after update to later JBoss EAP 7.3 / 7.4 patch level OR update to SQL Server JDK 11 driver (from JDK 8 or earlier)
    • The issue did not occur with older JBoss EAP 7.3.7 or earlier nor with the 7.4 GA.
    • The issue did not occur with SQL Server JDK 8 driver versions.


  • Red Hat JBoss Enterprise Application Platform (EAP)
    • 7.3.8 or later
    • 7.4.1 or later
  • Microsoft SQL Server driver built for JDK 9 or later
  • JDK 11

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