Oracle 8.1.5, ORA-03113: end-of-file on communicat

Question

My Environment:
====================
Unix Solaris 7
jre 1.1.6; using native threads (sparc)
Oracle 8i 8.1.5
Netscape Enterprise Server 3.6
Servlet Exec 2.0.2 plugin for NE Server
LD_LIBRARY_PATH is set to include oracle libraries.
CLASSPATH is set to include oracle classes111.zip
and nls_charset10.zip.
Include sample program JdbcCheckup confirmed that
oracle installation is correct.
Problem:
========
Our servlet accesses Oracle DB using oci8 drivers.
We are able to succesfully run simple queries
(accessing only 1 table) with result set containing
upto 9882 rows. However, a more complicated query,
accessing 3 tables (one table contains 9882 rows)
and performing a join, usually fails. By some miracle,
it run couple of times after we accessed the same tables
a few times with some simple queries (probably, some data
were cached by Oracle and succesfully reused).
Query fails with the message specified in the subject:
SQLException: ORA-03113: end-of-file on communication channel
If we try to repeat the same query with the same connection,
we get:
ORA-01041: internal error. hostdef extension doesn't exist
Any ideas ? Thanks.
Bozhena Bidyuk
Here is a stack trace for ORA-03113:
at oracle.jdbc.oci8.OCIDBAccess.check_error(OCIDBAccess.java)
at oracle.jdbc.oci8.OCIDBAccess.fetch(OCIDBAccess.java)
at
oracle.jdbc.driver.OracleStatement.doExecuteQuery(OracleStatement
.java)
at
oracle.jdbc.driver.OracleStatement.doExecute(OracleStatement.java
at
oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleSta
tement.java)
at
oracle.jdbc.driver.OracleStatement.executeQuery(OracleStatement.j
ava)
at JdbcDbs.doQuery(JdbcDbs.java)
at HandleRequests.doQuery(HandleRequests.java)
at HandleRequests.process(HandleRequests.java)
at DataPortServlet.service(DataPortServlet.java)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:588)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:588)
at
newatlanta.servletexec.ServletThread.run(ServletThread.java:122)
null

Answer 1

jreynolds wrote:
I've already given the developers a changed version that works, but here's the part I don't understand. When it's run as is I get the Ora-03113, but if I change the alias in the subquery select to og (the outer query alias), this sql runs. What is it about selecting the subquery column that is used in the where portion of the exists that makes oracle 9.2.0.1 on windows 2003 enterprise server lose the connection.
Any ideas would be greatly appreciated.
thanks in advance.You're using an unpatched base release and simply hitting a bug that causes the server foreground process that serves your request to fail with an exception that causes the operating system to kill the corresponding process (e.g. segment access violation, general protection fault, you name it).
As a workaround use the rewritten query you've already found out but you should consider to install at least the 9.2.0.8 patch set to prevent most of such nasty bugs in the future.
Regards,
Randolf
Oracle related stuff blog:
http://oracle-randolf.blogspot.com/
SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/