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Posted to dev@tomcat.apache.org by "Konstantin Kolinko (Confluence)" <no...@apache.org> on 2019/11/24 19:30:08 UTC
[CONF] Apache Tomcat > Database
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[Database](https://cwiki.apache.org/confluence/display/TOMCAT/Database?src=mail&src.mail.product=confluence-
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| | | | |  | | Konstantin
Kolinko edited this page
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| | Here's the version comment
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| | |  | | Konstantin
Kolinko edited at [07:22
PM](https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=103098844)
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| | | Add a permalink. Fix formatting. Convert links to https.
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| | Here's what changed:
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_Permalink_ to this page: [
https://cwiki.apache.org/confluence/x/3CklBg](https://cwiki.apache.org/confluence/x/3CklBg)
## Preface
This page is to discuss database error and DBCP. Until more content can appear
here, here are some links to the mail archives to perform some searches:
* [database](https://marc.info/?l=tomcat-user&w=2&r=1&s=database&q=b)
* [datasource](https://marc.info/?l=tomcat-user&w=2&r=1&s=datasource&q=b)
* [oracle](https://marc.info/?l=tomcat-user&w=2&r=1&s=oracle&q=b)
* [mysql](https://marc.info/?l=tomcat-user&w=2&r=1&s=mysql&q=b)
* [dbpool](https://marc.info/?l=tomcat-user&w=2&r=1&s=dbpool&q=b)
Other Links of interest:
* [JNDI Datasource HOW-TO](https://tomcat.apache.org/tomcat-9.0-doc/jndi-datasource-examples-howto.html)
## Questions
1. [Is it safe to use JDBC-ODBC bridge in production environment?](/confluence/pages/viewpage.action?pageId=103098844)
2. [How to use Orache thin driver?](/confluence/pages/viewpage.action?pageId=103098844)
3. [How to use JDBC 3 driver with Tomcat 8?](/confluence/pages/viewpage.action?pageId=103098844)
## Answers
### |
Anchor
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| | Q1
---|---
| Q1
Is it safe to use JDBC-ODBC bridge in production environment?
No, do not use JDBC-ODBC bridge bundled with Sun's JDK with Tomcat. It was
never meant for a production server environment. If you ask a question about
it, everyone will tell you to not use it. If you do need to use ODBC, there
are 3rd party drivers which do a pretty good job at being thread safe.
###
Anchor
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| | Q2
---|---
| Q2
How to use Orache thin driver?
If you use the oracle Oracle thin driver, be sure to rename it to a jar file
from a zip file. Tomcat only auto-magically loads files ending in .jar placed
in a lib directory. It ignores all other file extensions.
###
Anchor
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| | Q3
---|---
| Q3
How to use JDBC 3 driver with Tomcat 8 / DBCP 2?
One of the connection pool implementations in Tomcat 8 is DBCP 2, and DBCP 2
calls Connection.isValid(int) method when no validationQuery is specified.
IsValid(int) method is introduced with JDBC 4. If you must use JDBC 3 driver
with Tomcat 8 / DBCP 2, make sure that you specify `validationQuery` attribute
in pool configuration.
...
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