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From "Thomas Dudziak (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DDLUTILS-29) "Stream is already closed" with Oracle
Date Thu, 13 Jul 2006 07:47:35 GMT
     [ http://issues.apache.org/jira/browse/DDLUTILS-29?page=all ]

Thomas Dudziak updated DDLUTILS-29:

    Component: Core - Oracle

> "Stream is already closed" with Oracle
> --------------------------------------
>          Key: DDLUTILS-29
>          URL: http://issues.apache.org/jira/browse/DDLUTILS-29
>      Project: DdlUtils
>         Type: Bug

>   Components: Core - Oracle
>  Environment: Using oracle10g jdbc client driver  with oracle 8i server
>     Reporter: Alexandre Borgoltz
>     Assignee: Thomas Dudziak
>  Attachments: oracle_COLUMN_DEF_bug.patch
> I get a SQLException stating that the "stream is already closed".
> It occurs in at org.apache.ddlutils.io.JdbcModelReader.getValueAsString
> for the "COLUMN_DEF" column.
> Here is the stack trace - as you can see, I am using the ant task, with the sample xml
provided on DdlUtils' site.
> java.sql.SQLException: Le flux de données est déjà fermé
> at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
> at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:162)
> at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:227)
> at oracle.jdbc.driver.LongAccessor.getBytes(LongAccessor.java:166)
> at oracle.jdbc.driver.LongAccessor.getString(LongAccessor.java:207)
> at oracle.jdbc.driver.T4CLongAccessor.getString(T4CLongAccessor.java:390)
> at oracle.jdbc.driver.OracleResultSetImpl.getString(OracleResultSetImpl.java:355)
> at oracle.jdbc.driver.OracleResultSet.getString(OracleResultSet.java:1559)
> at org.apache.ddlutils.io.JdbcModelReader.getValueAsString(JdbcModelReader.java:494)
> at org.apache.ddlutils.io.JdbcModelReader.getColumnsForTable(JdbcModelReader.java:277)
> at org.apache.ddlutils.io.JdbcModelReader.getTables(JdbcModelReader.java:205)
> at org.apache.ddlutils.io.JdbcModelReader.getDatabase(JdbcModelReader.java:140)
> at org.apache.ddlutils.task.DatabaseToDdlTask.readSchema(DatabaseToDdlTask.java:194)
> at org.apache.ddlutils.task.DatabaseToDdlTask.execute(DatabaseToDdlTask.java:214)
> I have tested it with 8i, 9i and 10g versions of the client oracle driver - same result.
> It highly looks like this is a bug in oracle's drivers management of Long fields. 
> My tests proved that resultset.getString("COLUMN_DEF") :
> +can't be called twice (if .next() is not called obviously)
> +always fails for primary fields with 9i- drivers
> +fails if called after e.g. .getString("IS_NULLABLE") with 10g drivers
> +works OK if called first *with 10g drivers*
> So what I did is modify
> JdbcModelReader.getColumnsForTable(DatabaseMetaData, String)
> and move the call of
> getValueAsString(..., "COLUMN_DEF", ...)
> to be the first one called. This works perfectly on my platform now.
> I'll attach the corresponding patch

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