JSP Error Exception: java.sql.SQLException: Closed Connection

Manoj called me today about this issue. After clone, when application username (SYSADMIN) and password was keyed in by him and he reached the URL

http://justanexample.com/OA_HTML/fndvald.jsp

The following error was shown:

JSP Error

Exception:

java.sql.SQLException: Closed Connection

jserv.log showed:

java.sql.SQLException: Closed Connection
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:269)
at oracle.jdbc.driver.OracleConnection.rollback(OracleConnection.java:1459)
at _oa__html._fndvald._jspService(_fndvald.java:121)
at oracle.jsp.runtime.HttpJsp.service(HttpJsp.java:119)
at oracle.jsp.app.JspApplication.dispatchRequest(JspApplication.java:417)
at oracle.jsp.JspServlet.doDispatch(JspServlet.java:267)
at oracle.jsp.JspServlet.internalService(JspServlet.java:186)
at oracle.jsp.JspServlet.service(JspServlet.java:156)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:588)
at org.apache.jserv.JServConnection.processRequest(JServConnection.java:456)
at org.apache.jserv.JServConnection.run(JServConnection.java:294)
at java.lang.Thread.run(Thread.java:619)

I checked the Database alert log and found that everytime we tried to log in the following error was logged in the DB alert log:

Errors in file /justanexample/dbdata/admin/udump/justanexample_ora_27477.trc:
ORA-07445: exception encountered: core dump [00000001025F3090] [SIGSEGV] [Address not mapped to object] [0x100C100010000] [] []

The trace file showed more details:

ksedmp: internal or fatal error
ORA-07445: exception encountered: core dump [00000001025F3090] [SIGSEGV] [Address not mapped to object] [0x100C100010000] [] []
Current SQL statement for this session:
alter session set max_dump_file_size=unlimited
----- PL/SQL Call Stack -----
object line object
handle number name
441590590 428 package body APPS.FND_TRACE
441e4f050 350 package body APPS.FND_AOLJ_UTIL
441e4f050 236 package body APPS.FND_AOLJ_UTIL
43e89dd08 1 anonymous block

Manoj bounced the database once and these errors stopped coming in alert log. We were able to login to the applications without issues.