@@FETCH_STATUS in nested loops @@ServerName returns wrong value in SQL SERVER 2008 ##TempTable and INSERT-SELECT FROM an existing Table with an IDENTITY column %rowtype equivalent in SQL server ++ operator in TSQL - bug or feature? 2 tables referencing each other using foreign key.is it ...
真实的闪回场景中,最关键的是能快速筛选出真正需要回滚的SQL。 我们使用开源工具binlog2sql来进行实战演练。binlog2sql由美团点评DBA团队(上海)出品,多次在线上环境做快速回滚。 首先我们安装binlog2sql: ? 12shell> git clone https://github.com/danfengcao/binlog2sql.git &&cdbinlog2sqlshell> pipinstall-r...
STATEMENT:将 MySQL server 上执行的一个个 更新数据的 SQL statement 以文本的形式写到 binlog 中去,甚至还包括可能没有任何更新的语句也会记录在里面,比如一个删掉 test 表中一行不存在的语句(Rows changes: 0)。在这种格式下,所有的 DML 更新语句会以Query的事件类型(event type) 记录到 binlog 文件中,刚...
MRP0: Background Media Recovery cancelled with status 16037 Errors in file /u01/app/oracle/diag/rdbms/xffdg/xff/trace/xff_pr00_17876.trc: ORA-16037: user requested cancel of managed recovery operation Managed Standby Recovery not using Real Time Apply Recovery interrupted! Recovered data files ...
SQL> create or replace PROCEDURE p_test_del(in_put varchar2) as 2 begin 3 dbms_output.put_line(in_put); 4 end; 5 / Procedure created. SQL> set serveroutput on SQL> exec p_test_del('www.xifenfei.com'); www.xifenfei.com
txid_status(bigint) reports thecommitstatusofa recenttransaction. Applications may use ittodetermine whether atransactioncommittedorabortedwhenthe applicationanddatabaseserverbecome disconnectedwhileaCOMMITisinprogress. The statusofatransactionwill be reportedaseitherinprogress,committed,oraborted, provided that th...
mysql>showtables;+---+|Tables_in_test|+---+|kk||t1||t2||t3||t4||t5||t6||t7||t8|+---+9rowsinset(0.00sec) mysql>select*fromt8;+---+---+|id|name|+---+---+|1|jack||2|jack||3|jack||4|jack|+---+---+4rowsinset(0.00sec) mysql>insertintot8values(5,'steven');...
#180928 5:46:15 server id 117 end_log_pos 123 CRC32 0x14b8489c Start: binlog v 4, server v 5.7.22-log created 180928 5:46:15 at startup # Warning: this binlog is either in use or was not closed properly. ROLLBACK/*!*/; ...
Allocated 3981204 bytes in shared pool for flashback generation buffer Flashback Database Enabled at SCN 867006 Completed: alter database flashback on 此时,备库并没有开启闪回,需要在备库上手动开启闪回: SQL> alter database flashback on;
SQL> SELECT TO_CHAR(STANDBY_BECAME_PRIMARY_SCN) FROM V$DATABASE; 1. Step 2 Flash back the failed primary database. Shut down the old primary database (if necessary), mount it, and flash it back to the value for STANDBY_BECAME_PRIMARY_SCN that was determined in Step 1. SQL> SHUT...