oracle to mongodb migration

1 in data migration, users first have the right to modify the database, and the table space to create, delete and other rights For example: SELECT * from Dba_tab_privs where grantee= ' SCOT '; ---View Scott permissions (SYS user logon) Display results as: SELECT * from Dba_role_privs where grantee= ' SCOT '; --View Scott role Display results as: (1) If the user is locked through the following statement to unlock the table

1. Oracle has no database Concept Therefore, we can use user as a substitute for the database. For example, our previous SQL statement is Select AA, BB, CC from librarya. tablea Now, we create a user named librarya Then we use this user to construct tables, indexes, and so on. 2. Oracle recognizes empty strings as dbnull. DB2 or treats them as empty strings.Therefore, all the programs to be migrated

problem resolution.Next choose the data source service, I choose Oracle, then need to load OJDBC, there are two buttons below, usually choose to load from the hard disk,If add failsThen copy the jar package directly to the \java\lib in the tool root directory and restart the tool to take effect.Error when connecting to an Oracle server, such asThere are two kinds of reasons: 1. Database connection paramete

') Loop V_query_table_sql:=V_query_base_sql||C_tabs.table_name|| " '"; ExecuteImmediate V_query_table_sqlBulkCollect intotable_array; forIinchtable_array.first. Table_array.last Loop--Dbms_output.put_line (table_array (i). column_name | | ': ' | | Table_array (i). data_type); ifTable_array (i). data_type= 'DATE' ThenV_alter_sql:= 'ALTER TABLE' ||Table_array (i). table_name|| 'Modify' ||Table_array (i). column_name|| 'timestamp'; Dbms_output.put_line (Table_array (i). column_name|| ':

Just to the company, the leader gave me a task: The DB2 database data into the Oracle database, I try the following methods, very fast. Also import the Db2jcc.jar, Db2jcc_license_cu.jar, ojdbc14.jar three corresponding jar packages.Data migration:1, in the DB2 database through the following table query the structure of the tableSELECTTabName TAB,--table English nameColName COL,--column nameCaseWhen Typename

Tags: column mysq ICP TE ever port Comm Spec defaultSource-side Oracle 11.2.0.4 ogg12cip:10.200.3.193 System CentOS 7.11. Create a source table and some initialization dataSu-oracleSqlplus/as SYSDBASql>alter database add supplemental log data;Sql>select supplemental_log_data_min from V$database;Sql>alter database forcelogging;Sql> select Supplemental_log_data_min from V$database;NOsql> ALTER DATABASE add supplemental log data;Database altered.sql> alt

\ORADATA\AGRISK\REDO01. LOG ' to ' F:\APP\ADMINISTRATOR\ORADATA\AGRISK\REDO01. LOG '; the database has changed. sql>alterdatabaserenamefile ' D:\APP\ADMINISTRATOR\ORADATA\AGRISK\REDO02. LOG ' to ' F:\APP\ADMINISTRATOR\ORADATA\AGRISK\REDO02. LOG '; the database has changed. sql>alterdatabaserenamefile ' D:\APP\ADMINISTRATOR\ORADATA\AGRISK\REDO03. LOG ' to ' F:\APP\ADMINISTRATOR\ORADATA\AGRISK\REDO03. LOG '; the database has changed.After confirming the success of the modification, start the datab

PRIOR TABLE_NAME = table_nameand Prior RN = rn-1) TSB;5. Migrating basic types of indexesExecute the following SQLSelect ' Alter index ' | | index_name | | ' Rebuild tablespace target tablespace name; ' From user_indexesExport the result set, and then in the exported file inside the query stitching SQL all copied to plsql inside execution, if you encounter a prompt to skip directly.6. Data exportBecause when the index is migrated, the impact on the index value, if the use of ordinary exp comman

Welcome to the Oracle community forum and interact with 2 million technical staff. You can combine the above methods to migrate mode objects, such as using the Export Import method for small tables and modes, large tables are connected to databases using the parallel direct loading and insertion method. 3. create an index and activate constraints (system downtime required) * Method 1: Use the preceding Welcome to the

Oracle 11 tablespace dbf File migration When the disk space of the oracle data file is insufficient or the dbf file needs to be migrated to another location in other cases, the procedure is as follows: 1. sqlplus sys/sys as sysdba 2. shutdown immediate 3. copy the dbf file to a new location. 4. startup mount; 5. alter database rename file 'e: \

Java code for data migration between different oracle tablespaces -- migrate data in the database testdb and the username testuser's default (users) tablespace to the tablespace (newtablespace) -- 1. log on to the testdb database as a system user, create a directory (testdir), and grant the read and write permissions to the testuser user www.2cto.com create or replace directory testdir as 'e: \ temp '; gran

program for win) - --SCHEMAS: Source SCHEMAS to import the --exclude: Excluding specific objects - --REMAP_TABLESPACE=RMB3:RMB: Modify user tablespace (source table space: Destination tablespace)Wuyi --Remap_schema: Modify user Schema (source schema: Destination schema), meaning to move user data from the source schema to the destination schema the --DumpFile: The name of the data file to import - --logfile: File name of the import log Wu - About --Supplement $ --V

Oracle partition table data migration and Management Automation Process The following process is centered on the company's Oracle Database runtime environment. It is mainly written to achieve automation.Process completion tasks include1. automatically add partitions from the previous day to partition by Time2. automatically delete T_partition_1 Partition Table 6

SOURCE end: 12C RAC primay backup fileTarget side: 12C Single InstancePartial Summary:1 Pfile Modification2 Disable Redo Thread N3 Drop logfile Group N4 Rename LogFile5 Cancel Log Remote transferIf primary is in Maximum availablity mode, the control file will detect log_archive_dest_n in case the log transfer is normal? So without processing will be an error:LGWR (ora-16072): Minimum of 1 LGWR standby database requiredHowever, since the target side is a single instance, it is non-DG, so the DG m

Row migrations cannot be avoided, and increasing the size of each block can reduce the likelihood of row migration, but can also result in greater space waste. This balancing point needs to be determined according to the application. "Row Migration", Oracle data Saved by block, if a piece of data disk space can not save a data (such as the previous 1K, now updat

Tags: ref str Space Center Data Migration count target parallel OCAORACLE across Schema The Data MigrationThe test environment server is not enough, and colleagues need a new Oracle environment, the production environment to pull the data to build an internal system to run; this instance is not frequently used and requires a lot of resources, so prepare to reopen a new instance on the original, low-load