Database Administration (XWiki.org)

XWiki uses by default a database to store its data. You will find on this page tips and tricks to administer and tune your database setup. For Installation please check the [[Installation guide>>Documentation.AdminGuide.InstallationWAR||anchor="HInstallandconfigureaRelationalDatabase"]] which contains information on how to setup XWiki for multiple databases.

6

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= Indexes =

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To improve the performance of your XWiki instance when running with many documents you should run the following script to create indexes for your database (this has been tested for MySQL 5.0).

10

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== Indexes for XWiki versions after 4.3 ==

12

13

14

Even though we've configured XWiki to let Hibernate create indexes by default, there are some limitations and some indexes cannot be created automatically for string columns longer than 255 chars ([[MySQL has a limit of 255 characters>>http://dev.mysql.com/doc/refman/5.7/en/column-indexes.html]] - See also [[InnoDB limits>>http://dev.mysql.com/doc/refman/5.7/en/innodb-restrictions.html]]). Thus, at the moment the indexes listed below need to be created manually (for all databases since our default Hibernate configuration file doesn't specify creating indexes for those).

// Required

create index xwl_value on xwikilargestrings (xwl_value(50));

20

create index xwd_parent on xwikidoc (xwd_parent(50));

21

create index xwd_class_xml on xwikidoc (xwd_class_xml(20));

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create index ase_page_date on activitystream_events (ase_page, ase_date);

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create index xda_docid1 on xwikiattrecyclebin (xda_docid);

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create index ase_param1 on activitystream_events (ase_param1(200));

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create index ase_param2 on activitystream_events (ase_param2(200));

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create index ase_param3 on activitystream_events (ase_param3(200));

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create index ase_param4 on activitystream_events (ase_param4(200));

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create index ase_param5 on activitystream_events (ase_param5(200));

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// Only required if you use stats (feature is off by default)

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create index xws_number on xwikistatsdoc (XWS_NUMBER);

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create index xws_classname on xwikistatsdoc (XWS_CLASSNAME);

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create index xwr_number on xwikistatsreferer (XWR_NUMBER);

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create index xwr_classname on xwikistatsreferer (XWR_CLASSNAME);

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create index xwr_referer on xwikistatsreferer (XWR_REFERER(50));

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create index xwv_user_agent on xwikistatsvisit (XWV_USER_AGENT(255));

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create index xwv_cookie on xwikistatsvisit (XWV_COOKIE(255));

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create index xwv_classname on xwikistatsvisit (XWV_CLASSNAME);

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create index xwv_number on xwikistatsvisit (XWV_NUMBER);

Note to XWiki developers: The following indexes could be created automatically though since they're less than 255 characters and thus should be added in a future version of XWiki so that they don't need to be created manually:

43

44

45

create index xws_number on xwikistatsdoc (XWS_NUMBER);

46

create index xws_classname on xwikistatsdoc (XWS_CLASSNAME);

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create index xwr_number on xwikistatsreferer (XWR_NUMBER);

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create index xwr_classname on xwikistatsreferer (XWR_CLASSNAME);

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create index xwv_classname on xwikistatsvisit (XWV_CLASSNAME);

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create index xwv_number on xwikistatsvisit (XWV_NUMBER);

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create index xda_docid1 on xwikiattrecyclebin (xda_docid);

== Indexes for XWiki versions after 3.2 ==

56

57

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create index xwl_value on xwikilargestrings (xwl_value(50));

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create index xwd_parent on xwikidoc (xwd_parent(50));

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create index xwd_class_xml on xwikidoc (xwd_class_xml(20));

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create index xws_number on xwikistatsdoc (XWS_NUMBER);

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create index xws_classname on xwikistatsdoc (XWS_CLASSNAME);

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create index xwr_number on xwikistatsreferer (XWR_NUMBER);

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create index xwr_classname on xwikistatsreferer (XWR_CLASSNAME);

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create index xwr_referer on xwikistatsreferer (XWR_REFERER(50));

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create index xwv_user_agent on xwikistatsvisit (XWV_USER_AGENT(255));

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create index xwv_cookie on xwikistatsvisit (XWV_COOKIE(255));

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create index xwv_classname on xwikistatsvisit (XWV_CLASSNAME);

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create index xwv_number on xwikistatsvisit (XWV_NUMBER);

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create index ase_requestid on activitystream_events (ase_requestid(200));

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create index ase_page_date on activitystream_events (ase_page, ase_date);

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create index xda_docid1 on xwikiattrecyclebin (xda_docid);

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create index ase_param1 on activitystream_events (ase_param1(200));

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create index ase_param2 on activitystream_events (ase_param2(200));

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create index ase_param3 on activitystream_events (ase_param3(200));

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create index ase_param4 on activitystream_events (ase_param4(200));

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create index ase_param5 on activitystream_events (ase_param5(200));

* Most indexes are created automatically starting with XWiki 3.2 and only the indexes listed above need to be created.

82

* For older versions every index must be created manually. You can see the full list of indexes that should be created for older versions below. There is now [[an application>>extensions:Extension.Check Config And Indexes Application]] that runs this script automatically on XE and XEM directly from your wiki.

83

84

85

== Indexes for XWiki versions before 3.2 ==

86

87

88

create index DOC_SPACE on xwikidoc (XWD_WEB);

89

create index DOC_NAME on xwikidoc (XWD_NAME);

90

create index DOC_FULLNAME on xwikidoc (XWD_FULLNAME);

91

create index DOC_TITLE on xwikidoc (XWD_TITLE);

92

create index DOC_PARENT on xwikidoc (XWD_PARENT(50));

93

create index DOC_CREATION_DATE on xwikidoc (XWD_CREATION_DATE);

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create index DOC_DATE on xwikidoc (XWD_DATE);

95

create index DOC_CONTENT_UPDATE_DATE on xwikidoc (XWD_CONTENT_UPDATE_DATE);

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create index DOC_CREATOR on xwikidoc (XWD_CREATOR);

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create index DOC_AUTHOR on xwikidoc (XWD_AUTHOR);

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create index DOC_CONTENT_AUTHOR on xwikidoc (XWD_CONTENT_AUTHOR);

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create index DOC_LANGUAGE on xwikidoc (XWD_LANGUAGE);

100

create index DOC_DEFAULT_LANGUAGE on xwikidoc (XWD_DEFAULT_LANGUAGE);

101

create index DOC_CLASS_XML on xwikidoc (XWD_CLASS_XML(20));

102

create index DOC_MINOREDIT on xwikidoc (XWD_MINOREDIT);

103

create index DOC_HIDDEN on xwikidoc (XWD_HIDDEN);

104

create index OBJ_NAME on xwikiobjects (XWO_NAME);

105

create index OBJ_CLASSNAME on xwikiobjects (XWO_CLASSNAME);

106

create index OBJ_NUMBER on xwikiobjects (XWO_NUMBER);

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108

create index XWINT_NAME on xwikiintegers (XWI_NAME);

109

create index XWINT_VALUE on xwikiintegers (XWI_VALUE);

110

create index XWLONG_NAME on xwikilongs (XWL_NAME);

111

create index XWLONG_VALUE on xwikilongs (XWL_VALUE);

112

create index XWFLOAT_NAME on xwikifloats (XWF_NAME);

113

create index XWFLOAT_VALUE on xwikifloats (XWF_VALUE);

114

create index XWDOUBLE_NAME on xwikidoubles (XWD_NAME);

115

create index XWDOUBLE_VALUE on xwikidoubles (XWD_VALUE);

116

create index XWDATE_NAME on xwikidates (XWS_NAME);

117

create index XWDATE_VALUE on xwikidates (XWS_VALUE);

118

create index XWSTR_NAME on xwikistrings (XWS_NAME);

119

create index XWSTR_VALUE on xwikistrings (XWS_VALUE);

120

create index XWLS_NAME on xwikilargestrings (XWL_NAME);

121

create index XWLS_VALUE on xwikilargestrings (XWL_VALUE(50));

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123

create index xwr_isdiff on xwikircs(xwr_isdiff);

124

create index xws_name on xwikistatsdoc (XWS_NAME);

125

create index xws_number on xwikistatsdoc (XWS_NUMBER);

126

create index xws_classname on xwikistatsdoc (XWS_CLASSNAME);

127

create index xws_action on xwikistatsdoc (XWS_ACTION);

128

create index xws_page_views on xwikistatsdoc (XWS_PAGE_VIEWS);

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create index xws_unique_visitors on xwikistatsdoc (XWS_UNIQUE_VISITORS);

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create index xws_period on xwikistatsdoc (XWS_PERIOD);

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create index xws_visits on xwikistatsdoc (XWS_VISITS);

132

create index xwr_number on xwikistatsreferer (XWR_NUMBER);

133

create index xwr_name on xwikistatsreferer (XWR_NAME);

134

create index xwr_classname on xwikistatsreferer (XWR_CLASSNAME);

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create index xwr_referer on xwikistatsreferer (XWR_REFERER(50));

136

create index xwr_page_views on xwikistatsreferer (XWR_PAGE_VIEWS);

137

create index xwr_period on xwikistatsreferer (XWR_PERIOD);

138

create index xwv_start_date on xwikistatsvisit (XWV_START_DATE);

139

create index xwv_name on xwikistatsvisit (XWV_NAME);

140

create index xwv_page_views on xwikistatsvisit (XWV_PAGE_VIEWS);

141

create index xwv_page_saves on xwikistatsvisit (XWV_PAGE_SAVES);

142

create index xwv_downloads on xwikistatsvisit (XWV_DOWNLOADS);

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create index xwv_end_date on xwikistatsvisit (XWV_END_DATE);

144

create index xwv_ip on xwikistatsvisit (XWV_IP);

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create index xwv_user_agent on xwikistatsvisit (XWV_USER_AGENT(255));

146

create index xwv_cookie on xwikistatsvisit (XWV_COOKIE(255));

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create index xwv_unique_id on xwikistatsvisit (XWV_UNIQUE_ID);

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create index xwv_classname on xwikistatsvisit (XWV_CLASSNAME);

149

create index xwv_number on xwikistatsvisit (XWV_NUMBER);

150

151

create index xdd_fullname1 on xwikirecyclebin (xdd_fullname);

152

create index xdd_language on xwikirecyclebin (xdd_language);

153

create index xdd_date on xwikirecyclebin (xdd_date);

154

create index xdd_deleter on xwikirecyclebin (xdd_deleter);

155

create index xda_docid1 on xwikiattrecyclebin (xda_docid);

156

create index xda_doc_name on xwikiattrecyclebin (xda_doc_name);

157

create index xda_filename on xwikiattrecyclebin (xda_filename);

158

create index xda_date on xwikiattrecyclebin (xda_date);

159

create index xda_deleter on xwikiattrecyclebin (xda_deleter);

160

161

create index ase_requestid on activitystream_events (ase_requestid(200));

162

create index ase_stream on activitystream_events (ase_stream);

163

create index ase_date on activitystream_events (ase_date);

164

create index ase_type on activitystream_events (ase_type);

165

create index ase_application on activitystream_events (ase_application);

166

create index ase_user on activitystream_events (ase_user);

167

create index ase_wiki on activitystream_events (ase_wiki);

168

create index ase_space on activitystream_events (ase_space);

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create index ase_page on activitystream_events (ase_page);

170

create index ase_page_date on activitystream_events (ase_page, ase_date);

= Sanity Checks =

To verify the consistency of your XWiki database you can run the sanity check script. The script will select rows that are inconsistent with the logics of XWiki. If no rows are selected, it means the script itself can not detect any error.

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* If you use **MySQL** as your database:

178

** The following [[sanity check script>>attach:sanitycheck.sql]] has been tested for **MySQL 5.0** (also been reported to work with MS-SQL)

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** Another [[script>>attach:sanitycheckMySQL4.sql]] is a variant of the previous script for **MySQL 4.x** replacing some syntax with more ancient one (still reports errors in one command)

180

* If you use **postgresql** as your database:

181

** Here is a [[modified version of the sanity check script>>attach:sanitycheck_postgresql.sql]], to be run in the "query" tool of pgAdmin. It is the same as the script for MySQL, except that the syntax for SQL comments is different.

182

** pgAdmin is the GUI tool provided with postgresql to access the database. Run pgAdmin, select the ##xwiki## database, and choose the "Query" option in the "Tools" menu. Then just open the script and click on the play icon ("Execute query").

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= Database browsing =

== DbVisualizer ==

[[DbVisualizer>>http://www.dbvis.com/download/]] natively supports these DBs:

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* DB2 for Windows/Linux

* JavaDB/Derby

* MySQL

* PostgreSQL

* [[and more>>http://www.dbvis.com/features/tour/supported-databases/]]

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Any DB using the corresponding JDBC driver:

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* Example: HSQLDB by using the driver bundled with XWiki

Wiki source code of Database Administration

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author	version	line-number	content
		1	{{box cssClass="floatinginfobox" title="Contents"}}
		2	{{toc/}}
		3	{{/box}}
		4
		5	XWiki uses by default a database to store its data. You will find on this page tips and tricks to administer and tune your database setup. For Installation please check the [[Installation guide>>Documentation.AdminGuide.InstallationWAR\|\|anchor="HInstallandconfigureaRelationalDatabase"]] which contains information on how to setup XWiki for multiple databases.
		6
		7	= Indexes =
		8
		9	To improve the performance of your XWiki instance when running with many documents you should run the following script to create indexes for your database (this has been tested for MySQL 5.0).
		10
		11	== Indexes for XWiki versions after 4.3 ==
		12
		13	{{info}}
		14	Even though we've configured XWiki to let Hibernate create indexes by default, there are some limitations and some indexes cannot be created automatically for string columns longer than 255 chars ([[MySQL has a limit of 255 characters>>http://dev.mysql.com/doc/refman/5.7/en/column-indexes.html]] - See also [[InnoDB limits>>http://dev.mysql.com/doc/refman/5.7/en/innodb-restrictions.html]]). Thus, at the moment the indexes listed below need to be created manually (for all databases since our default Hibernate configuration file doesn't specify creating indexes for those).
		15	{{/info}}
		16
		17	{{code}}
		18	// Required
		19	create index xwl_value on xwikilargestrings (xwl_value(50));
		20	create index xwd_parent on xwikidoc (xwd_parent(50));
		21	create index xwd_class_xml on xwikidoc (xwd_class_xml(20));
		22	create index ase_page_date on activitystream_events (ase_page, ase_date);
		23	create index xda_docid1 on xwikiattrecyclebin (xda_docid);
		24	create index ase_param1 on activitystream_events (ase_param1(200));
		25	create index ase_param2 on activitystream_events (ase_param2(200));
		26	create index ase_param3 on activitystream_events (ase_param3(200));
		27	create index ase_param4 on activitystream_events (ase_param4(200));
		28	create index ase_param5 on activitystream_events (ase_param5(200));
		29	// Only required if you use stats (feature is off by default)
		30	create index xws_number on xwikistatsdoc (XWS_NUMBER);
		31	create index xws_classname on xwikistatsdoc (XWS_CLASSNAME);
		32	create index xwr_number on xwikistatsreferer (XWR_NUMBER);
		33	create index xwr_classname on xwikistatsreferer (XWR_CLASSNAME);
		34	create index xwr_referer on xwikistatsreferer (XWR_REFERER(50));
		35	create index xwv_user_agent on xwikistatsvisit (XWV_USER_AGENT(255));
		36	create index xwv_cookie on xwikistatsvisit (XWV_COOKIE(255));
		37	create index xwv_classname on xwikistatsvisit (XWV_CLASSNAME);
		38	create index xwv_number on xwikistatsvisit (XWV_NUMBER);
		39	{{/code}}
		40
		41	{{info}}
		42	Note to XWiki developers: The following indexes could be created automatically though since they're less than 255 characters and thus should be added in a future version of XWiki so that they don't need to be created manually:
		43
		44	{{code}}
		45	create index xws_number on xwikistatsdoc (XWS_NUMBER);
		46	create index xws_classname on xwikistatsdoc (XWS_CLASSNAME);
		47	create index xwr_number on xwikistatsreferer (XWR_NUMBER);
		48	create index xwr_classname on xwikistatsreferer (XWR_CLASSNAME);
		49	create index xwv_classname on xwikistatsvisit (XWV_CLASSNAME);
		50	create index xwv_number on xwikistatsvisit (XWV_NUMBER);
		51	create index xda_docid1 on xwikiattrecyclebin (xda_docid);
		52	{{/code}}
		53	{{/info}}
		54
		55	== Indexes for XWiki versions after 3.2 ==
		56
		57	{{code}}
		58	create index xwl_value on xwikilargestrings (xwl_value(50));
		59	create index xwd_parent on xwikidoc (xwd_parent(50));
		60	create index xwd_class_xml on xwikidoc (xwd_class_xml(20));
		61	create index xws_number on xwikistatsdoc (XWS_NUMBER);
		62	create index xws_classname on xwikistatsdoc (XWS_CLASSNAME);
		63	create index xwr_number on xwikistatsreferer (XWR_NUMBER);
		64	create index xwr_classname on xwikistatsreferer (XWR_CLASSNAME);
		65	create index xwr_referer on xwikistatsreferer (XWR_REFERER(50));
		66	create index xwv_user_agent on xwikistatsvisit (XWV_USER_AGENT(255));
		67	create index xwv_cookie on xwikistatsvisit (XWV_COOKIE(255));
		68	create index xwv_classname on xwikistatsvisit (XWV_CLASSNAME);
		69	create index xwv_number on xwikistatsvisit (XWV_NUMBER);
		70	create index ase_requestid on activitystream_events (ase_requestid(200));
		71	create index ase_page_date on activitystream_events (ase_page, ase_date);
		72	create index xda_docid1 on xwikiattrecyclebin (xda_docid);
		73	create index ase_param1 on activitystream_events (ase_param1(200));
		74	create index ase_param2 on activitystream_events (ase_param2(200));
		75	create index ase_param3 on activitystream_events (ase_param3(200));
		76	create index ase_param4 on activitystream_events (ase_param4(200));
		77	create index ase_param5 on activitystream_events (ase_param5(200));
		78	{{/code}}
		79
		80	{{info}}
		81	* Most indexes are created automatically starting with XWiki 3.2 and only the indexes listed above need to be created.
		82	* For older versions every index must be created manually. You can see the full list of indexes that should be created for older versions below. There is now [[an application>>extensions:Extension.Check Config And Indexes Application]] that runs this script automatically on XE and XEM directly from your wiki.
		83	{{/info}}
		84
		85	== Indexes for XWiki versions before 3.2 ==
		86
		87	{{code}}
		88	create index DOC_SPACE on xwikidoc (XWD_WEB);
		89	create index DOC_NAME on xwikidoc (XWD_NAME);
		90	create index DOC_FULLNAME on xwikidoc (XWD_FULLNAME);
		91	create index DOC_TITLE on xwikidoc (XWD_TITLE);
		92	create index DOC_PARENT on xwikidoc (XWD_PARENT(50));
		93	create index DOC_CREATION_DATE on xwikidoc (XWD_CREATION_DATE);
		94	create index DOC_DATE on xwikidoc (XWD_DATE);
		95	create index DOC_CONTENT_UPDATE_DATE on xwikidoc (XWD_CONTENT_UPDATE_DATE);
		96	create index DOC_CREATOR on xwikidoc (XWD_CREATOR);
		97	create index DOC_AUTHOR on xwikidoc (XWD_AUTHOR);
		98	create index DOC_CONTENT_AUTHOR on xwikidoc (XWD_CONTENT_AUTHOR);
		99	create index DOC_LANGUAGE on xwikidoc (XWD_LANGUAGE);
		100	create index DOC_DEFAULT_LANGUAGE on xwikidoc (XWD_DEFAULT_LANGUAGE);
		101	create index DOC_CLASS_XML on xwikidoc (XWD_CLASS_XML(20));
		102	create index DOC_MINOREDIT on xwikidoc (XWD_MINOREDIT);
		103	create index DOC_HIDDEN on xwikidoc (XWD_HIDDEN);
		104	create index OBJ_NAME on xwikiobjects (XWO_NAME);
		105	create index OBJ_CLASSNAME on xwikiobjects (XWO_CLASSNAME);
		106	create index OBJ_NUMBER on xwikiobjects (XWO_NUMBER);
		107
		108	create index XWINT_NAME on xwikiintegers (XWI_NAME);
		109	create index XWINT_VALUE on xwikiintegers (XWI_VALUE);
		110	create index XWLONG_NAME on xwikilongs (XWL_NAME);
		111	create index XWLONG_VALUE on xwikilongs (XWL_VALUE);
		112	create index XWFLOAT_NAME on xwikifloats (XWF_NAME);
		113	create index XWFLOAT_VALUE on xwikifloats (XWF_VALUE);
		114	create index XWDOUBLE_NAME on xwikidoubles (XWD_NAME);
		115	create index XWDOUBLE_VALUE on xwikidoubles (XWD_VALUE);
		116	create index XWDATE_NAME on xwikidates (XWS_NAME);
		117	create index XWDATE_VALUE on xwikidates (XWS_VALUE);
		118	create index XWSTR_NAME on xwikistrings (XWS_NAME);
		119	create index XWSTR_VALUE on xwikistrings (XWS_VALUE);
		120	create index XWLS_NAME on xwikilargestrings (XWL_NAME);
		121	create index XWLS_VALUE on xwikilargestrings (XWL_VALUE(50));
		122
		123	create index xwr_isdiff on xwikircs(xwr_isdiff);
		124	create index xws_name on xwikistatsdoc (XWS_NAME);
		125	create index xws_number on xwikistatsdoc (XWS_NUMBER);
		126	create index xws_classname on xwikistatsdoc (XWS_CLASSNAME);
		127	create index xws_action on xwikistatsdoc (XWS_ACTION);
		128	create index xws_page_views on xwikistatsdoc (XWS_PAGE_VIEWS);
		129	create index xws_unique_visitors on xwikistatsdoc (XWS_UNIQUE_VISITORS);
		130	create index xws_period on xwikistatsdoc (XWS_PERIOD);
		131	create index xws_visits on xwikistatsdoc (XWS_VISITS);
		132	create index xwr_number on xwikistatsreferer (XWR_NUMBER);
		133	create index xwr_name on xwikistatsreferer (XWR_NAME);
		134	create index xwr_classname on xwikistatsreferer (XWR_CLASSNAME);
		135	create index xwr_referer on xwikistatsreferer (XWR_REFERER(50));
		136	create index xwr_page_views on xwikistatsreferer (XWR_PAGE_VIEWS);
		137	create index xwr_period on xwikistatsreferer (XWR_PERIOD);
		138	create index xwv_start_date on xwikistatsvisit (XWV_START_DATE);
		139	create index xwv_name on xwikistatsvisit (XWV_NAME);
		140	create index xwv_page_views on xwikistatsvisit (XWV_PAGE_VIEWS);
		141	create index xwv_page_saves on xwikistatsvisit (XWV_PAGE_SAVES);
		142	create index xwv_downloads on xwikistatsvisit (XWV_DOWNLOADS);
		143	create index xwv_end_date on xwikistatsvisit (XWV_END_DATE);
		144	create index xwv_ip on xwikistatsvisit (XWV_IP);
		145	create index xwv_user_agent on xwikistatsvisit (XWV_USER_AGENT(255));
		146	create index xwv_cookie on xwikistatsvisit (XWV_COOKIE(255));
		147	create index xwv_unique_id on xwikistatsvisit (XWV_UNIQUE_ID);
		148	create index xwv_classname on xwikistatsvisit (XWV_CLASSNAME);
		149	create index xwv_number on xwikistatsvisit (XWV_NUMBER);
		150
		151	create index xdd_fullname1 on xwikirecyclebin (xdd_fullname);
		152	create index xdd_language on xwikirecyclebin (xdd_language);
		153	create index xdd_date on xwikirecyclebin (xdd_date);
		154	create index xdd_deleter on xwikirecyclebin (xdd_deleter);
		155	create index xda_docid1 on xwikiattrecyclebin (xda_docid);
		156	create index xda_doc_name on xwikiattrecyclebin (xda_doc_name);
		157	create index xda_filename on xwikiattrecyclebin (xda_filename);
		158	create index xda_date on xwikiattrecyclebin (xda_date);
		159	create index xda_deleter on xwikiattrecyclebin (xda_deleter);
		160
		161	create index ase_requestid on activitystream_events (ase_requestid(200));
		162	create index ase_stream on activitystream_events (ase_stream);
		163	create index ase_date on activitystream_events (ase_date);
		164	create index ase_type on activitystream_events (ase_type);
		165	create index ase_application on activitystream_events (ase_application);
		166	create index ase_user on activitystream_events (ase_user);
		167	create index ase_wiki on activitystream_events (ase_wiki);
		168	create index ase_space on activitystream_events (ase_space);
		169	create index ase_page on activitystream_events (ase_page);
		170	create index ase_page_date on activitystream_events (ase_page, ase_date);
		171	{{/code}}
		172
		173	= Sanity Checks =
		174
		175	To verify the consistency of your XWiki database you can run the sanity check script. The script will select rows that are inconsistent with the logics of XWiki. If no rows are selected, it means the script itself can not detect any error.
		176
		177	* If you use MySQL as your database:
		178	The following [[sanity check script>>attach:sanitycheck.sql]] has been tested for MySQL 5.0** (also been reported to work with MS-SQL)
		179	Another [[script>>attach:sanitycheckMySQL4.sql]] is a variant of the previous script for MySQL 4.x** replacing some syntax with more ancient one (still reports errors in one command)
		180	* If you use postgresql as your database:
		181	** Here is a [[modified version of the sanity check script>>attach:sanitycheck_postgresql.sql]], to be run in the "query" tool of pgAdmin. It is the same as the script for MySQL, except that the syntax for SQL comments is different.
		182	** pgAdmin is the GUI tool provided with postgresql to access the database. Run pgAdmin, select the ##xwiki## database, and choose the "Query" option in the "Tools" menu. Then just open the script and click on the play icon ("Execute query").
		183
		184	= Database browsing =
		185
		186	== DbVisualizer ==
		187
		188	[[DbVisualizer>>http://www.dbvis.com/download/]] natively supports these DBs:
		189
		190	* DB2 for Windows/Linux
		191	* JavaDB/Derby
		192	* MySQL
		193	* PostgreSQL
		194	* [[and more>>http://www.dbvis.com/features/tour/supported-databases/]]
		195
		196	Any DB using the corresponding JDBC driver:
		197
		198	* Example: HSQLDB by using the driver bundled with XWiki