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CA APM 10.7 Oracle Error In Logs

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Article ID: 186549

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Updated On:

Products

CA Application Performance Management Agent (APM / Wily / Introscope) CA Application Performance Management (APM / Wily / Introscope) INTROSCOPE DX Application Performance Management

Issue/Introduction

EMService log shows the following type of errors...

INFO   | jvm 1    | 2020/03/01 07:31:03 | 3/01/20 07:31:02.999 AM EST [WARN] [C3P0PooledConnectionPoolManager[identityToken->xxxxxxxxxxxxxxx, dataSourceName->cemDataSource]-HelperThread-#2] [com.mchange.v2.resourcepool.BasicResourcePool] com[email protected]34b23783 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (3). Last acquisition attempt exception: 
INFO   | jvm 1    | 2020/03/01 07:31:03 | java.sql.SQLRecoverableException: IO Error: NL Exception was generated
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:489)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:553)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:254)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:528)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:146)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:195)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:211)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1086)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1073)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:44)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1810)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:648)
INFO   | jvm 1    | 2020/03/01 07:31:03 | Caused by: oracle.net.ns.NetException: NL Exception was generated
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at oracle.net.resolver.AddrResolution.resolveAddrTree(AddrResolution.java:648)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:443)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:693)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at oracle.net.ns.NSProtocol.connect(NSProtocol.java:251)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1140)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:340)
INFO   | jvm 1    | 2020/03/01 07:31:03 |  ... 12 more

Environment

Release : 10.7.0

Component : APM Introscope

Resolution

MOM unable to connect to Oracle DB for unknown reason.
Restart of Introscope Enterprise Manager service resolved the problem.