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Marius Dumitru Florea 1.1 1 {{box cssClass="floatinginfobox" title="**Contents**"}}
2 {{toc/}}
3 {{/box}}
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5 {{warning}}
Thomas Mortagne 9.1 6 If you are migrating from an earlier version than 4.0, and your database contains statistics collected using a version earlier than 2.2, you will probably encounter an issue during our automated database migration. To avoid that issue, you will need to clean up your statistics by executing some SQL commands described in issue [[XWIKI-8129>>https://jira.xwiki.org/browse/XWIKI-8129]]. Be sure to apply these before attempting the migration. If your are in doubt, apply it, these could not hurt. If you don't, you will face duplicate IDs errors during the migration process, and it will fail, preventing you to run your wiki.
Marius Dumitru Florea 1.1 7 {{/warning}}
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9 {{warning}}
Thomas Mortagne 9.1 10 If you are upgrading to this version from an older version which uses Lucene 3.x, you have to manually delete the lucene directory in the xwiki data directory. For example, that could cause Lucene to loop endlessly while trying to index pages, among other things. This is caused by the Lucene migration to 4.0 (see [[XWIKI-8404>>https://jira.xwiki.org/browse/XWIKI-8404]]).
Marius Dumitru Florea 1.1 11 {{/warning}}
12
13 This is the release notes for XWiki Platform, XWiki Enterprise and XWiki Enterprise Manager. They share the same release notes as they are released together and have the same version.
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Vincent Massol 5.1 15 = New and Noteworthy (since XWiki 4.5.3) =
Marius Dumitru Florea 1.1 16
Sergiu Dumitriu 7.1 17 This is a bugfix release for the 4.5.x cycle, hopefully the last on the 4.x cycle. Affected areas include the distribution wizard and the extension manager, Internet Explorer compatibility, Oracle and PostgreSQL compatibility, and multiwiki improvements.
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Thomas Mortagne 9.1 19 [[Full list of issues fixed and Dashboard for 4.5.4>>https://jira.xwiki.org/secure/Dashboard.jspa?selectPageId=11590]].
Marius Dumitru Florea 1.1 20
21 == Full Issue List ==
22
Thomas Mortagne 9.1 23 {{jira style="list" url="https://jira.xwiki.org" fields="type, status, key, summary" source="jql"}}
Vincent Massol 5.1 24 Project in ("XWiki Commons", "XWiki Rendering", "XWiki Platform", "XWiki Enterprise", "XWiki Enterprise Manager") and fixVersion in ("4.5.4") and resolution in ("Fixed") and component not in ("Build, Infrastructure and Tests")
Marius Dumitru Florea 1.1 25 {{/jira}}
26
27 = Translations =
28
29 The following translations have been updated:
30
Sergiu Dumitriu 6.1 31 {{language codes="da,de,fr,lv,pt_BR,ru,sv"/}}
Marius Dumitru Florea 1.1 32
33 = Tested Browsers & Databases =
34
Vincent Massol 5.1 35 {{include reference="TestReports.ManualTestReportXWiki454Summary"/}}
Marius Dumitru Florea 1.1 36
37 = Known issues =
38
Thomas Mortagne 9.1 39 * [[Bugs we know about>>https://jira.xwiki.org/secure/IssueNavigator.jspa?reset=true&jqlQuery=category+%3D+%22Top+Level+Projects%22+AND+issuetype+%3D+Bug+AND+resolution+%3D+Unresolved+ORDER+BY+updated+DESC]]
40 * If you're migrating an XWiki instance using PostgreSQL or Oracle you may get [[this error>>https://jira.xwiki.org/browse/XWIKI-9473]] (fixed in XWiki 5.2). The workaround is to remove the ##hibernate_sequence## sequence prior to starting XWiki (for the main wiki and all subwikis).
Marius Dumitru Florea 1.1 41
42 = Backward Compatibility and Migration Notes =
43
44 == General Notes ==
45
46 {{warning}}
47 PLEASE, BACKUP YOUR DATABASE BEFORE STARTING YOUR WIKI.
48 AUTOMATED MIGRATION PROCEDURE TAKE PLACE AT STARTUP AND YOU MAY NEED TO START OVER IF YOU ENCOUNTER AN UNEXPECTED ISSUE.
49 {{/warning}}
50
51 You may also want to [[import the default wiki XAR>>Main.Download]] in order to benefit from all the improvements listed above.
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53 {{warning}}
54 Always make sure you compare your ##xwiki.cfg## and ##xwiki.properties## files with the newest version since some configuration parameters were added. Note that you should add ##xwiki.store.migration=1## so that XWiki will attempt to automatically migrate your current database to the new schema. Make sure you backup your Database before doing anything.
55 {{/warning}}
56
57 {{warning}}
Thomas Mortagne 9.1 58 If you are migrating from an earlier version than 4.0, and your database contains statistics collected using a version earlier than 2.2, you will probably encounter an issue during our automated database migration. To avoid that issue, you will need to clean up your statistics by executing some SQL commands described in issue [[XWIKI-8129>>https://jira.xwiki.org/browse/XWIKI-8129]]. Be sure to apply these before attempting the migration. If your are in doubt, apply it, these could not hurt. If you don't, you will face duplicate IDs errors during the migration process, and it will fail, preventing you to run your wiki.
Marius Dumitru Florea 1.1 59 {{/warning}}
60
61 {{warning}}
62 If you have encountered an issue with the migration, you may need to start over from a backup. Be careful that during the migration, two new tables have been created (in each xwiki database for a farm) and should be dropped when you restore a backup of a database coming from a version earlier than 4.x. These two tables are DATABASECHANGELOG and DATABASECHANGELOGLOCK. These should only be removed if you restore a pre-4.x database schema. Mixing an old database with these two tables will surely cause issue during schema updates (liquibase checksum failure).
63 {{/warning}}
64
65 == API Breakages ==
66
Vincent Massol 5.1 67 No API breakage since XWiki 4.5.3.

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