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From "Knut Anders Hatlen (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-5283) Crash / process termination during SYSCS_DISABLE_LOG_ARCHIVE_MODE can leave service.properties broken
Date Mon, 17 Oct 2011 07:36:11 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13128710#comment-13128710
] 

Knut Anders Hatlen commented on DERBY-5283:
-------------------------------------------

Patch 1b looks good to me, and the tests look complete. One minor nit: I didn't immediately
understand the abbreviation in the new helper method getSFPath(). Perhaps spell it out or
rename it to getMostAccuratePath()?
                
> Crash / process termination during SYSCS_DISABLE_LOG_ARCHIVE_MODE can leave service.properties
broken
> -----------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-5283
>                 URL: https://issues.apache.org/jira/browse/DERBY-5283
>             Project: Derby
>          Issue Type: Bug
>          Components: Miscellaneous
>    Affects Versions: 10.6.1.0, 10.8.1.2
>         Environment: >sysinfo
> ------------------ Java Information ------------------
> Java Version:    1.6.0_26
> Java Vendor:     Sun Microsystems Inc.
> Java home:       C:\Program Files (x86)\Java\jre6
> Java classpath:  .;C:\Program Files (x86)\Java\jre6\lib\ext\QTJava.zip;C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\bin\../lib/derby.jar;C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\bin\../lib/derbynet.jar;C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\bin\../lib/derbyclient.jar;C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\bin\../lib/derbytools.jar
> OS name:         Windows 7
> OS architecture: x86
> OS version:      6.1
> Java user name:  bmason
> Java user home:  C:\Users\BMASON
> Java user dir:   C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\bin
> java.specification.name: Java Platform API Specification
> java.specification.version: 1.6
> java.runtime.version: 1.6.0_26-b03
> --------- Derby Information --------
> JRE - JDBC: Java SE 6 - JDBC 4.0
> [C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\lib\derby.jar] 10.6.1.0 - (938214)
> [C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\lib\derbytools.jar] 10.6.1.0 - (938214)
> [C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\lib\derbynet.jar] 10.6.1.0 - (938214)
> [C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\lib\derbyclient.jar] 10.6.1.0 - (938214)
> ------------------------------------------------------
> ----------------- Locale Information -----------------
> Current Locale :  [English/New Zealand [en_NZ]]
> Found support for locale: [cs]
>          version: 10.6.1.0 - (938214)
> Found support for locale: [de_DE]
>          version: 10.6.1.0 - (938214)
> Found support for locale: [es]
>          version: 10.6.1.0 - (938214)
> Found support for locale: [fr]
>          version: 10.6.1.0 - (938214)
> Found support for locale: [hu]
>          version: 10.6.1.0 - (938214)
> Found support for locale: [it]
>          version: 10.6.1.0 - (938214)
> Found support for locale: [ja_JP]
>          version: 10.6.1.0 - (938214)
> Found support for locale: [ko_KR]
>          version: 10.6.1.0 - (938214)
> Found support for locale: [pl]
>          version: 10.6.1.0 - (938214)
> Found support for locale: [pt_BR]
>          version: 10.6.1.0 - (938214)
> Found support for locale: [ru]
>          version: 10.6.1.0 - (938214)
> Found support for locale: [zh_CN]
>          version: 10.6.1.0 - (938214)
> Found support for locale: [zh_TW]
>          version: 10.6.1.0 - (938214)
> ------------------------------------------------------
>            Reporter: Brett Mason
>            Assignee: Kristian Waagan
>         Attachments: derby-5283-1a-recover.diff, derby-5283-1b-recover.diff
>
>
> If Derby is terminated while SYSCS_DISABLE_LOG_ARCHIVE_MODE is being called service.properties
can be left in a broken state.
> Depending on timing either of the two cases can happen:
> Case 1:
> "ERROR XBM0S: Unable to rename file 'C:\PATH_TO_DB\service.properties' to 'C:\PATH_TO_DB\service.propertiesold'
" is thrown when next trying to call
> SYSCS_DISABLE_LOG_ARCHIVE_MODE(1). Both "service.properties" and "service.propertiesold"
are present in the database directory. Removing "service.propertiesold" corrects the problem.
> Case 2:
> "SQLException: Database 'C:\PATH_TO_DB' not found" is thrown when booting the database.
The file service.properties does not exist in the database directory but service.propertiesold
does exist. Renaming the file back to "service.properties" corrects the problem.
> As mentioned above both cases have workarounds but they require manual intervention which
is a problem for applications installed to a customer site. It would be great if a more reliable
method to update the file could be found.
> The following sample code will reproduce the issue fairly reliably by terminating the
java process:
> import java.sql.*;
> import org.apache.derby.jdbc.*;
> public class DerbyLogArchiveModeTest {
>     
>     public static void main(String[] args) {
>         final EmbeddedDataSource ds = new EmbeddedDataSource();
>         ds.setDatabaseName("derbyTest");
>         ds.setCreateDatabase("create");
>         try {
>             final Connection conn = ds.getConnection();
>             try {
>                 final Statement stmt = conn.createStatement();
>                 try {
>                     while (true) {
>                         stmt.execute("call SYSCS_UTIL.SYSCS_DISABLE_LOG_ARCHIVE_MODE(1)");
>                     }
>                 } finally {
>                     stmt.close();
>                 }
>             } finally {
>                 conn.close();
>             }
>         } catch (SQLException e) {
>             e.printStackTrace();
>         }
>     }
> }

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