Re: SQL Error on fetch
Re: SQL Error on fetch
- Subject: Re: SQL Error on fetch
- From: OCsite via Webobjects-dev <email@hidden>
- Date: Tue, 4 Feb 2020 22:23:53 +0100
Gino,
I can be completely wrong, but it looks like two problem logs interspersed,
which stinks by a threading issue, along with the fact it happens
intermittently.
If possible, I'd check race conditions and try to synchronize (or lock) where
needed.
Quite possibly someone other would give a much better advice, just a quick-look
idea.
All the best,
OC
> On 4 Feb 2020, at 22:00, Gino Pacitti via Webobjects-dev
> <email@hidden> wrote:
>
> Hi
> Has anyone encountered this sort of error before?
>
> It does not happen all the time but just on occasion.
>
> mysql Ver 14.14 Distrib 5.7.28, for Linux (x86_64) using EditLine wrapper
>
> Java 8
>
> mysql-connector-java-8.0.19.jar
>
> This is my connection URL
> jdbc:mysql://127.0.0.1/<DATABASE>_UTF_8?capitalizeTypeNames=true&useUnicode=true&characterEncoding=UTF-8&characterSetResults=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false&sendFractionalSeconds=false&autoReconnect=true&useServerPrepStmts=false&rewriteBatchedStatements=true&useCompression=true
>
> <mysql://127.0.0.1/_UTF_8?capitalizeTypeNames=true&useUnicode=true&characterEncoding=UTF-8&characterSetResults=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false&sendFractionalSeconds=false&autoReconnect=true&useServerPrepStmts=false&rewriteBatchedStatements=true&useCompression=true>
>
> And here is the error
> Unexpected exception encountered during
> query.java.lang.NullPointerExceptionat
> com.mysql.jdbc.SQLError.createSQLException(SQLError.java:965)com.mysql.jdbc.SQLError.createSQLException(SQLError.java:965)
> at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:898)
> at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:887)
> at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:861)
> at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2532)
> at
> com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1903)
> at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1242)
> at
> com.webobjects.jdbcadaptor.JDBCChannel._bindInputVariablesWithBindingsAndExecute(JDBCChannel.java:265)
> at
> com.webobjects.jdbcadaptor.JDBCChannel._evaluateExpression(JDBCChannel.java:337)
> at
> com.webobjects.jdbcadaptor.JDBCChannel.evaluateExpression(JDBCChannel.java:296)
> at
> er.extensions.jdbc.ERXJDBCAdaptor$Channel.evaluateExpression(ERXJDBCAdaptor.java:283)
> at
> com.webobjects.jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:220)
> at
> er.extensions.jdbc.ERXJDBCAdaptor$Channel.selectAttributes(ERXJDBCAdaptor.java:200)
> at
> com.webobjects.eoaccess.EODatabaseChannel._selectWithFetchSpecificationEditingContext(EODatabaseChannel.java:897)
> at
> com.webobjects.eoaccess.EODatabaseChannel.selectObjectsWithFetchSpecification(EODatabaseChannel.java:234)
> at
> com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecificationEditingContext(EODatabaseContext.java:3055)
> at
> com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecification(EODatabaseContext.java:3195)
> at
> com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488)
> at
> com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4069)
> at er.extensions.eof.ERXEC.objectsWithFetchSpecification(ERXEC.java:1307)
> at
> com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4444)
> at
> er.extensions.eof.ERXFetchSpecification.fetchObjects(ERXFetchSpecification.java:155)
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