dml itil

Tags: star rollback troubleshooting Flash back here requires and restores the OSIDownloadgit clone https://github.com/danfengcao/binlog2sql.git PrincipleUsing Python to connect to the specified library, read the table structure of the table to be recovered, and the corresponding Binlog log, in case the Binlog is in row format and DML records all the field values, the set and where field values are swapped in place, and the SQL that is stitched togethe

The Oracle audit technique is used to track the DML action of the oracle background database create or replace package when is procedure pro_monitor_drop_policy (object_schema in varchar2); procedure when (object_schema in varchar2); procedure when; procedure pro_monitor_add_main; end;/create or replace package body aa_pkg_monitor_business_ SQL is/* truncate table sys. fga_log $; select t. * from dba_fga_audit_trail t; */procedure pro_monitor_drop_pol

TABLESPACE is read only, and DML and DDL operations can be performed (some examples) create a test table space create tablespace tablespacereadonly datafile '/u02/oradata/orcl/tablespacereadonly01.dbf' size 1 m autoextend on next 1 m maxsize unlimited; create user ureadonly identified by "123456" default tablespace tablespacereadonly; Authorize the test user www.2cto.com grant connect, resource to uoffline;Create table t01 (id integer, name varchar2 (

Source: CCID In a production environment, the data of a certain table or table may be modified for some reason, but it is difficult to find out which user and process to modify. This is a headache for DBAs (DBAs do not know the entire code logic very well ). To locate the "problem" statement, you can choose from the following methods: log miner, detail granularity audit, and trigger. Log miner requires archiving logs (not all systems can do this) and a considerable disk space. The advantage is t

1. Statement Review1) Use the insert statement to add a new row to the table. Insert into table [(column [, column...])]Values (value [, value...]);With this syntax, only one row can be inserted at a time:Example:Insert into dept (deptno, dname, Loc)Values (70, 'public relations ', 'shenyang '); 2) use the update statement to modify existing rows.Update tableSet column = value [, column = value,...][Where condition];-You can modify multiple rows at a time.-If the WHERE clause is used, you can sp

Oracle9i automatically captures DML statements through trigger SQL> Create Table T1 (a number); the table has been created. SQL> Create Table t_ SQL (username varchar2 (30 ),2 client_ip varchar2 (20), SQL _text varchar2 (4000 ),3 table_name varchar2 (30), owner varchar2 (30); the table has been created. SQL> Create or replace trigger capt_ SQL2 before delete or insert or update on T13 declare4 N n

DML performance is low. One of the most serious causes is the existence of useless indexes. All SQL insert, update, and delete operations will become slower when they need to modify a large number of indexes when each row of data is changed.Many Oracle administrators assign an index to a column of WHERE statements in an SQL query. Although this method can make SQL run faster, the function-based Oracle index makes it possible for database administrator

delimited fields terminated by ' \ t ' location '/user /hive/warehouse/workdb/emp '; View table type: DESC formatted empl; Delete test, delete the table's metadata, and do not delete the real table, solve the problem partition table (patitioned) with the increase in time, The accumulation of analysis files will also increase, resulting in the analysis of the table will be increased, if you put in a directory query more or less affect the efficiency of execution, but if the partition based on ti

Perform Oracle operations with DML in the following internal order:1. The corresponding transaction is allocated a rollback segment (undo segment ).2. After a rollback segment is allocated, create the transaction table slot (transaction table slot) on the rollback segment header ).3. After the transaction table is created, TXID (TransactionID) is generated, and then TXID is allocated to the current transaction. This value points to the exact location

Management Process GGSCI (linux2) 6> edit params mgr Port 7809Dynamicportlist 7810-7830Purgeoldextracts/u01/app/ogg/dirdat/rt *, usecheckpoints, minkeepdays 7, minkeepfiles 20 Save and exit Start mgr Process GGSCI (linux2) 25> start mgr 3. Configure the replicate Process 1) edit the replicate Configuration GGSCI (linux2) 26> edit params rp01 Replicat rp01SETENV (NLS_LANG = "AMERICAN_AMERICA.ZHS16GBK ")Userid ogg, password oggDboptions suppresstriggersAssumetargetdefsMap user1.table1, target use

Ogg configuration review (dml> ddl> sequnce), dmlsequnce SQL> @ sequence. sqlPlease enter the name of a schema for the GoldenGate database objects: goldengateSetting schema name to GOLDENGATEUPDATE_SEQUENCE STATUS: line/pos Error ---------- warn No errors No errorsGETSEQFLUSHLine/pos Error ---------- warn No errors No errorsSEQTRACELine/pos E Rror ---------- ------------------------------------------------------------------- No errors No errorsREPLI

There are two options for designing DML triggers: Execute the instead trigger instead of the usual trigger operation. You can also define the insteadTriggers. These triggers can extend the update types supported by the view. Execute the after Trigger After executing the insert, update, or delete statement operation. The specified after is the same as the specified. AfterTriggers can only be specified on tables. The following table compares the fun

Use of DML (Database operating language) in SQL 1. Insert statement:INSERT [INTO] table [(column1, column2, column3,...)] VALUES (value1, value2, value3 ,...);Example: insert into user VALUES (NULL, 'test', '20140901 ');Example: insert into user (username, password) VALUES ('test', '123 ');There is actually another way:Example: insert into user SET username = 'test', password = '000000 '; 2. query statement:SELECT [option] item [INTO file_details] FRO

DML performance is low. One of the most serious causes is the existence of useless indexes. All SQL insert, update, and delete operations will become slower when they need to modify a large number of indexes when each row of data is changed. Many Oracle administrators assign an index to a column of WHERE statements in an SQL query. Although this method can make SQL run faster, the function-based Oracle index makes it possible for database administrato

0 0 1Tr_aaa3_4 823673982 0 0 0 1 1Tr_aaa3_5 839674039 0 0 0 0 1Tr_aaa3_6 855674096 0 0 0 0 1tr_aaa3_7 871674153 0 0 1 0 1Tr_aaa3_8 887674210 0 0 0 0 1Finally we scrambled into a insteatof trigger. See what the order of execution is.CREATE TR

00000000000000b0:48484848 48484848 48484848 48484848† Hhhhhhhhhhhhhhhh 00000000000000c0:48484848 48484848 48c10000 00010015†hhhhhhhhh .... 00000000000000d0:00020000†††††††††††††††††††††††††††† ....As you can see from the above, when I insert the deleted "H" into the data page again, I find that "H" is in the slot1 position of the data page No. 201, and someone is wondering, why not slot0??? Think about it really can tell us a truth, that is, SQL is not case-sensitive, so "H" and "H" are

US LIFT joins User_role x on US. pk_id = x.fk_user_idNatural join: Equivalent connectionCommon statements:Update tb5 set name= ' xxxx ' where name= ' XJ ';Update tb5 set gender= ' F ' ORDER by name limit 1;: Only modify the first post sorted with limit 1.Show global variables like ' query_cache% ';: Query cache size, as long as the value greater than 0 is open cache, 0 means cache is offSELECT @ @GLOBAL. query_cache_size;: You can also see if the cache is enabled.Select Current_time ();: Displa

When we create a database and a table that stores the data, we need to add new data to the table, delete the unwanted data, and back up the data. The DML language is used to manipulate the data.One: Insert inserts data1, inserting a single row of dataInsert into table name (list name) values (value); Note the insertion value "" Here is not the same as null.2, inserting multiple rows of dataInsert into new table name (list name) Select old list name fr

--Create TABLE t_hq_bm2--CREATE TABLE t_hq_bm2 as SELECT * from T_HQ_BM;Commit;--Add line contents--INSERT into T_HQ_BM2 values (' 107 ', ' Research department ', ' 147258369 ');Commit;--delete line with department code 107--Delete t_hq_bm2 where bumenbm = ' 107 ';Commit;--Add line contents--INSERT INTO T_HQ_BM2 (Bumenbm,lianxidh) VALUES (' 107 ', ' 147258369 ');Commit; update all contact numbers for 123456789UpdateT_hq_bm2SetLianxidh= '123456789';Commit;--Update the department Code of 106 conta

2007-03-07 12:25 DML performance is low, one of the most serious reasons is the existence of useless indexes. All SQL inserts, updates, and deletions become slower when they need to modify a large number of indexes when each row of data is changed. Many Oracle managers will assign indexes to an SQL query if they see a column in the where statement. While this approach allows SQL to run faster, a functionally based Oracle index makes it poss