客户对DWS执行并发insert overwrite操作,报错:org.postgresql.util.PSQLException: ERROR: tuple concurrently updated。 原因分析 客户作业存在并发操作,同时对一张表执行两个insert overwrite操作。 一个cn在执行: TRUNCATETABLEBI_MONITOR.SAA_OUTBOUND_ORDER_C
"tuple concurrently updated"); break; case TM_Deleted: elog(ERROR, "tuple concurrently deleted"); break; default: elog(ERROR, "unrecognized heap_update status: %u", result); break; } }
UPDATE, DELETE */#define ShareUpdateExclusiveLock 4/* VACUUM (non-FULL), ANALYZE, CREATE* INDEX CONCURRENTLY */#define ShareLock 5/* CREATE INDEX (WITHOUT CONCURRENTLY) */#define ShareRowExclusiveLock 6/* like EXCLUSIVE MODE, but allows ROW* ...
heap_lock_tuple的逻辑: HeapTupleSatisfiesUpdate:HeapTupleBeingUpdated:已插入,正在被修改,还没有提交。多个事务在lock元组,而且至少有一个在运行仅仅有一个事务在修改元组,但还没有提交 拿锁,修改pg_multixact, 修改flag, 放锁 tuple锁 PostgreSQL中的行锁 coltpython:Postgresql锁机制 modb.pro/db/70021一文搞懂...
PostgreSQL是一种开源的关系型数据库管理系统(RDBMS),它支持高级的SQL查询语言和广泛的数据类型。级联更新是指在更新一行数据时,同时更新该行中的多个列。 在PostgreSQL 11...
Ideally, this would be 0, but it depends on the activity on the table. That will show here if you are constantly modifying and querying the same pages. If that is not the case, the visibility map needs to be updated. This is done by vacuum (which is why we turned autovacuum off ...
table_name:Name of the table colocation of which will be updated. colocate_with:The table to which the table should be colocated with. If you want to break the colocation of a table, you should specifycolocate_with => 'none'. Return value ...
i.e. the number of tuples present in the table before the processing started. On the other hand,ins,updanddelare the numbers of tuples inserted, updated and deleted by applications during the table processing. (These "concurrent data changes" must also be incorporated into the squeezed table...
1 REINDEX SCHEMA public Recreate all indices in database postgres: 1 REINDEX DATABASE postgres Recreate all indices on system catalogs in database postgres: 1 REINDEX SYSTEM postgres Updated on April 17, 2025 Was this helpful?Yes NoProvide feedback about this article ...
longer running, but its parent has not updated its state yet. It is not necessary to update a subtransaction’s transaction status to subcommit, so we can just defer it until main transaction commit. The main role of marking transactions as sub-committed is to provide an atomic commit proto...