I am facing this exception a lot now,
in context with path [/aa-sport] threw exception
[com.orientechnologies.orient.core.exception.ODatabaseException: Error on
retrieving record #27:165831 (cluster: event)] with root cause
com.orientechnologies.common.concur.OTimeoutException: Can not lock record
for 2000 ms. seems record is deadlocked by other record
at
com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.acquireReadLock(OAbstractPaginatedStorage.java:1308)
at
com.orientechnologies.orient.core.tx.OTransactionAbstract.lockRecord(OTransactionAbstract.java:120)
at
com.orientechnologies.orient.core.id.ORecordId.lock(ORecordId.java:282)
at
com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.lockRecord(OAbstractPaginatedStorage.java:1784)
at
com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.readRecord(OAbstractPaginatedStorage.java:1424)
at
com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.readRecord(OAbstractPaginatedStorage.java:697)
at
com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.executeReadRecord(ODatabaseDocumentTx.java:1572)
at
com.orientechnologies.orient.core.tx.OTransactionNoTx.loadRecord(OTransactionNoTx.java:80)
at
com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.load(ODatabaseDocumentTx.java:1437)
at
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.readRecord(ONetworkProtocolBinary.java:1453)
at
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.executeRequest(ONetworkProtocolBinary.java:346)
at
com.orientechnologies.orient.server.network.protocol.binary.OBinaryNetworkProtocolAbstract.execute(OBinaryNetworkProtocolAbstract.java:216)
at
com.orientechnologies.common.thread.OSoftThread.run(OSoftThread.java:65)
I have a web app running on tomcat 7.0.59 and 2.0.2 OrientDB.
I am initializing the DB once tomcat starts
db = getOObjectDatabaseTx();
db.setAutomaticSchemaGeneration(true);
db.getEntityManager().registerEntityClasses("com.sport.server.model");
public OObjectDatabaseTx getOObjectDatabaseTx() {
return
OObjectDatabasePool.global().acquire(PropertiesManager.getInstance().getProperty(ENDPOINT_URL),
PropertiesManager.getInstance().getProperty(DB_USERNAME),
PropertiesManager.getInstance().getProperty(DB_PASSWORD));
}
Please help me in this.. And let me know if I am doing something wrong
here. I have a scheduler running to update the DB every couple of secs.
This exception happens when I try to read from the DB while writing is
occurring. I believe..
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