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Posted to dev@tomcat.apache.org by bu...@apache.org on 2003/05/05 16:36:50 UTC
DO NOT REPLY [Bug 19671] New: -
Reloading a webapp does not release DLLs
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=19671
Reloading a webapp does not release DLLs
Summary: Reloading a webapp does not release DLLs
Product: Tomcat 4
Version: 4.1.24
Platform: PC
OS/Version: Windows NT/2K
Status: NEW
Severity: Major
Priority: Other
Component: Catalina
AssignedTo: tomcat-dev@jakarta.apache.org
ReportedBy: rnaegele@mgm-edv.de
When a webapp is reloaded, either explicitly via manager or automatically
because the context is reloadable, native libraries (DLLs) are not released.
In our concrete case, we use Oracle IFS via JDBC OCI driver. After a reload of
the webapp, we get the following exception:
java.lang.UnsatisfiedLinkError: Native Library D:\ora9ias\BIN\ocijdbc9.dll
already loaded in another classloader
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1437)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1397)
at java.lang.Runtime.loadLibrary0(Runtime.java:788)
at java.lang.System.loadLibrary(System.java:832)
at oracle.jdbc.oci8.OCIDBAccess.logon(OCIDBAccess.java:300)
at oracle.jdbc.driver.OracleConnection.(OracleConnection.java:355)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:457)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:332)
at java.sql.DriverManager.getConnection(DriverManager.java:512)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at oracle.ifs.server.LibraryConnection.(LibraryConnection.java:245)
at
oracle.ifs.server.ConnectionPool.constructLibraryConnection(ConnectionPool.java:712)
at
oracle.ifs.server.ConnectionPool.createLibraryConnection(ConnectionPool.java:673)
at oracle.ifs.server.ConnectionPool.(ConnectionPool.java:311)
at
oracle.ifs.server.S_LibraryService.resetConnectionPools(S_LibraryService.java:3204)
at oracle.ifs.server.S_LibraryService.(S_LibraryService.java:1051)
at oracle.ifs.server.S_LibraryService.startService(S_LibraryService.java:1408)
at oracle.ifs.beans.LibraryService.startService(LibraryService.java:255)
at oracle.ifs.beans.LibraryService.startService(LibraryService.java:303)
...
As a workaround, we put the classes12.jar into <TOMCAT_HOME>\shared\lib, which
is not really a good solution but works for now since there are no other webapps
running on this tomcat which might cause conflicts.
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