select pg_terminate_backend(pid) from pg_stat_activity where usename='admin'; -- 杀死admin账户的当前连接(我这里业务账号用的是admin) 10、查询最大连接数 1 show max_connections; 11、导出数据到csv文件 1 copy (select * from test) to '/data/test.csv' with csv header; 12、查询最消耗CPU...
I then ran this command to kill off all active connections: SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE -- don't kill my own connection! pid <> pg_backend_pid() -- don't kill the connections to other databases AND datname = 'vapor_database'; Finally, a third reque...
event_source,PostgreSQL,Sets the application name used to identify PostgreSQL messages in the event log. exit_on_error,off,Terminate session on any error. extra_float_digits,0,Sets the number of digits displayed for floating-point values. force_parallel_mode,off,Forces use of parallel query faci...
执行explain或explain (buffers true, analyze true, verbose true)命令,查看SQL的执行计划(前者不会实际执行SQL,后者会实际执行而且能得到详细的执行信息),对其中的Table Scan涉及的表,建立索引。 重新编写SQL,去除掉不必要的子查询、改写UNION ALL、使用JOIN CLAUSE固定连接顺序等,都是进一步深度优化SQL的手段,这里不...
select pg_cancel_backend(pid) from pg_stat_activity where query like '%<query text>%' and pid != pg_backend_pid(); select pg_terminate_backend(pid) from pg_stat_activity where query like '%<query text>%' and pid != pg_backend_pid(); 如果这些SQL确实是业务上必需的,则需要对他们做...
SELECT pg_terminate_backend(pid);其中,pid 是执行语句的后台进程 id,通过上文中的查询可以获得。 📝关于如何查看和终止 PostgreSQL 连接会话的详细内容,可以参考这篇文章。查看版本例如,以下语句可以查看 PostgreSQL 服务器的版本:hrdb=> SELECT version();...
(): std::bad_alloc > > DETAIL: parameters: $1 = '1', $2 = '1748010445', $3 = '0', $4 = '1000' > terminate > called after throwing an instance of 'std::bad_alloc' terminate called > after throwing an instance of 'std::bad_alloc' what(): what(): > std::bad_allocstd...
{ /* Set BM_VALID, terminate IO, and wake up any waiters */ TerminateBufferIO(bufHdr, false, BM_VALID); } VacuumPageMiss++; if (VacuumCostActive) VacuumCostBalance += VacuumCostPageMiss; TRACE_POSTGRESQL_BUFFER_READ_DONE(forkNum, blockNum, smgr->smgr_rnode.node.spcNode, smgr->smgr_...
This implementation will terminate the TLS connection at the gateway, meaning the encrypted connections ends at the gateway and downstream data is proxied unencrypted. We'll assume that the TLS cert used by the server has a wildcard for *.db.example.com, though if you wanted to send separate...
The PostgreSQL Operator lets you force all remote connections to occur over TLS by using the --tls-only flag. For example, using the setup above, you can force TLS in a PostgreSQL cluster by executing the following command: pgo create cluster hippo \ --tls-only \ --server -ca-secret=...