実行中にハングするコンソールアプリケーションがあります。これが私の設定です:
cfg.setProperty("hibernate.connection.driver_class", "com.mysql.jdbc.Driver");
cfg.setProperty("hibernate.connection.url", "jdbc:mysql://localhost:3306/db?user=db&password=db");
cfg.setProperty("hibernate.connection.username", "db");
cfg.setProperty("hibernate.connection.password", "db");
cfg.setProperty("hibernate.connection.pool_size", "5");
cfg.setProperty("hibernate.connection.autocommit", "false");
cfg.setProperty("hibernate.c3p0.min_size", "5");
cfg.setProperty("hibernate.c3p0.max_size", "20");
cfg.setProperty("hibernate.c3p0.timeout", "300");
cfg.setProperty("hibernate.c3p0.max_statements", "50");
cfg.setProperty("hibernate.c3p0.idle_test_period", "3000");
これが私のスタックトレースです:
"main" prio=10 tid=0x000000000168f800 nid=0x1c37 in Object.wait() [0x00007fa60d0ad000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000007400f4c68> (a com.mchange.v2.resourcepool.BasicResourcePool)
at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1315)
at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:557)
- locked <0x00000007400f4c68> (a com.mchange.v2.resourcepool.BasicResourcePool)
at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:477)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:525)
at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)
at org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:84)
at org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.obtainConnection(AbstractSessionImpl.java:281)
at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:297)
at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection(LogicalConnectionImpl.java:169)
at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doBegin(JdbcTransaction.java:67)
at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.begin(AbstractTransactionImpl.java:160)
at org.hibernate.internal.SessionImpl.beginTransaction(SessionImpl.java:1392)
at org.kriyak.parser.IndexArchiveRapid.indexFile(IndexArchiveRapid.java:70)
at org.kriyak.parser.IndexArchiveRapid.main(IndexArchiveRapid.java:53)
私は1つのconenctonだけを開きます、そして私がそれらを漏らしているようには見えません。また、私は1つのスレッドを使用します。メモリ使用量を除いて、mysql設定を調整していません。Mysqlはコンソールから正常に動作します。なぜこれが起こるのでしょうか?これはc3p0エラーですか?