Erreur ojdbc7 est introuvable

Bonjour j’ai un problem sur spring boot suite 4 : L’ojdbc7 n’est pas reconnu.

[INFO] Scanning for projects...
[WARNING] 
[WARNING] Some problems were encountered while building the effective model for com.acton:geco:war:0.0.1-SNAPSHOT
[WARNING] 'dependencies.dependency.version' for org.thymeleaf.extras:thymeleaf-extras-springsecurity4:jar is either LATEST or RELEASE (both of them are being deprecated) @ line 101, column 17
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING] 
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING] 
[INFO] 
[INFO] ---------------------------< com.acton:geco >---------------------------
[INFO] Building geco 0.0.1-SNAPSHOT
[INFO] --------------------------------[ war ]---------------------------------
[WARNING] The POM for com.oracle:ojdbc7:jar:12.1.0.1 is missing, no dependency information available
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.394 s
[INFO] Finished at: 2019-06-04T16:23:31+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project geco: Could not resolve dependencies for project com.acton:geco:war:0.0.1-SNAPSHOT: Failure to find com.oracle:ojdbc7:jar:12.1.0.1 in https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException