Psqlexception Error Deadlock Detected
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Operationalerror: Deadlock Detected
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Postgresql Deadlock
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Hint: See Server Log For Query Details.
4 down vote favorite 1 I'm trying to insert some files into a Postgres database. Since lots of duplication is expected, we put the files themselves into the file table, then link them to the section of the database we're using with the output_file table. As the file table is also referenced by tables other than output_file (for example, the similar input_file table), one of its postgresql deadlock detected columns is a reference count, which is updated by a trigger when rows are inserted into output_file (and the other tables, too, although they aren't being used at the times the problem occurs). CREATE TABLE file ( file_id serial PRIMARY KEY, --other columns occurences integer NOT NULL DEFAULT 0 ); CREATE TABLE output_file ( output_file_id serial PRIMARY KEY, --other columns file_id integer REFERENCES file NOT NULL ); CREATE OR REPLACE FUNCTION file_insert() RETURNS opaque AS ' BEGIN UPDATE file SET occurences = occurences + 1 WHERE file.file_id = NEW.file_id; RETURN NEW; END; ' LANGUAGE plpgsql; CREATE TRIGGER output_file_insert AFTER INSERT ON output_file FOR EACH ROW EXECUTE PROCEDURE file_insert(); The code that inserts the files is shown below, and is all one transaction. private void insertFiles(Set
Sign in Pricing Blog Support Search GitHub select for update postgres This repository Watch 38 Star 128 Fork 77 IQSS/dataverse Code Issues 706 Pull requests 13 Projects 1 Pulse Graphs New issue PSQLException: ERROR: deadlock detected running integration tests #2460 Open pdurbin opened this Issue Aug 14, 2015 · 7 comments Projects None http://stackoverflow.com/questions/6841703/why-are-my-queries-deadlocking yet Labels Component: API Status: Triaged Type: Bug Milestone No milestone Assignees No one assigned 6 participants Institute for Quantitative Social Science member pdurbin commented Aug 14, 2015 Running integration tests such as mvn test -Dtest=SearchIT is causing deadlocks. I'm https://github.com/IQSS/dataverse/issues/2460 not sure why. An example stacktrace is below. These integration tests are normal API calls. I'm not touching the database directly or anything. I'm on commit 35c42ad. Passing to @scolapasta for review. [2015-08-14T16:57:04.687-0400] [glassfish 4.1] [WARNING] [] [org.eclipse.persistence.session.file:/Users/pdurbin/NetBeansProjects/dataverse/target/dataverse-4.2/WEB-INF/classes/_VDCNet-ejbPU] [tid: _ThreadID=142 _ThreadName=http-listener-1(3)] [timeMillis: 1439585824687] [levelValue: 900] [[ Local Exception Stack: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.DatabaseException Internal Exception: org.postgresql.util.PSQLException: ERROR: deadlock detected Detail: Process 18486 waits for ShareLock on transaction 2306911; blocked by process 18491. Process 18491 waits for ShareLock on transaction 2306909; blocked by process 18486. Hint: See server log for query details. Error Code: 0 Call: UPDATE DVOBJECT SET PERMISSIONINDEXTIME = ? WHERE (ID = ?) bind => [2 parameters bound] Query: UpdateObjectQuery([Dataset id:846 ]) at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:340) at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.processExceptionForCommError(DatabaseAccessor.java:1611) at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:898) at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeNoSelect(DatabaseAccessor.j
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multiple threads 6 posts / 0 new Log in or register to post comments Last post Thu, 05/23/2013 - 10:05 #1 zaki Offline Last seen: 3 years 4 months ago Joined: 04/08/2013 - 07:22 Posts: 3 Deadlock while updating process variable (runTimeService.setVariable()) from multiple threads Using runTimeService.setVariable(myExecutionId, myVariableName, someValue); to set the processVariable from multiple threads results in a database deadlock. Running Activiti version: 5.12.1 12:42:34:185 WARN [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (http--0.0.0.0-8080-2) SQL Error: 0, SQLState: 40P01 12:42:34:187 ERROR [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (http--0.0.0.0-8080-2) ERROR: deadlock detected Detail: Process 31789 waits for ShareLock on transaction 90486; blocked by process 31791. Process 31791 waits for ShareLock on transaction 90485; blocked by process 31789. Hint: See server log for query details. 12:42:34:191 ERROR [org.activiti.engine.impl.interceptor.CommandContext] (http--0.0.0.0-8080-2) Error while closing command context: org.apache.ibatis.exceptions.PersistenceException: ### Error updating database. Cause: org.hibernate.exception.GenericJDBCException: ERROR: deadlock detected Detail: Process 31789 waits for ShareLock on transaction 90486; blocked by process 31791. Process 31791 waits for ShareLock on transaction 90485; blocked by process 31789. Hint: See server log for query details. ### The error may involve org.activiti.engine.impl.persistence.entity.VariableInstanceEntity.updateByteArray_postgres-Inline ### The error occurred while setting parameters ### SQL: update ACT_GE_BYTEARRAY set REV_ = ?, BYTES_ = ? where ID_ = ? and REV_ = ? ### Cause: org.hibernate.exception.GenericJDBCException: ERROR: deadlock detected Detail: Process 31789 waits for ShareLock on transaction 90486; blocked by process 31791. Process 31791 waits for ShareLock on transaction 90485; blocked by process 31789. Hint: See server lo