Basic Commands

Owned by Jakub Sejba
Last updated: Oct 13, 2015 by Miroslav Sivon (Deactivated)
5 min read

All keywords are case-insensitive.

The following list of commands is meant to be an overview of basic and most used Dbvisit Replicate commands. For details (and the full list of commands) see Full Command-Line Reference.

Managing the processes

There is no 'Start process_name' command. 
The processes cannot be started from the dbvrep console. Start the process from the command line using the --daemon option instead.

[oracle@src ~]$ dbvrep --daemon --ddcfile /home/oracle/TESTSUITE1/TESTSUITE1-MINE.ddc start MINE
Initializing......done
DDC loaded from database (230 variables).
Dbvisit Replicate version
Copyright (C) Dbvisit Software Limited. All rights reserved.
DDC file /home/oracle/TESTSUITE1/TESTSUITE1-MINE.ddc loaded.
Starting process MINE...started

SHUTDOWN process_name

Connect to MINE/APPLY/FETCHER and request it to shut down.
SHUTDOWN ALL means requesting all processes defined in DDC to shut down.

dbvrep> shutdown all
Dbvisit Replicate APPLY process shutting down.
Dbvisit Replicate FETCHER process shutting down.
Dbvisit Replicate MINE process shutting down.

PAUSE process_name

Connect to the FETCHER/MINE/APPLY process and pause the process.

dbvrep> pause apply
Apply requested to pause

RESUME process_name

Connect to the FETCHER/MINE/APPLY process and resume the process.

dbvrep> resume apply
Apply requested to resume

Managing conflicts

LIST CONFLICT

List the current conflict(s). This information is obtained from Dbvisit Replicate internal table DBRSAPPLY_CONFLICT_LOG on the APPLY side.

dbvrep> list conflict current
Information for conflict 8576010028511:
Table: SCOTT.CONF at transaction 0009.02f.00003ffc at SCN 29913656
SQL text (with replaced bind values): insert into SCOTT."CONF"
(ID,VALUE)
values
(3,
'c')
Error: ORA-00001: unique constraint (SCOTT.PK_ID) violated
Handled as: RETRY

 

After the all conflicts were resolved:

dbvrep> list conflict last
Information for conflict 8576010038761:
Table: SCOTT.CONF at transaction 0002.000.00004102 at SCN 29918665
SQL text (with replaced bind values): insert into SCOTT."CONF"
(ID,VALUE)
values
(6,
'f')
Error: ORA-00001: unique constraint (SCOTT.PK_ID) violated
Handled as: RETRY
Resolved at: 15.12.2012 01:00:34
Resolved as: STATEMENT IGNORED

 

 

In 2-way replication if there is a conflict with APPLY1, then the CHOOSE REPLICATION command first has to be issued before the list conflict command will list the actual conflict of the APPLY1 process. See the CHOOSE REPLICATION command. 

 

RESOLVE

Contacts APPLY and resolves current conflict.

dbvrep> resolve conflict 8576010038761 as ignore
Conflict resolution set.
 
OR
 
dbvrep> resolve conflict 0 as ignore
Conflict resolution set.

Managing the replication

LIST PROGRESS

Show tabular overview of MINE/APPLY records processed and conflicts. You can optionally specify a schema to filter the results to a particular database schema (this is source schema if renaming is used). Use ALL to see everything including Dbvisit Replicate internal tables.

dbvrep> list progress
Progress of replication TESTSUITE1: total/this execution
--------------------------------------------------------------------------------------------------------------------------------------------
SCOTT.CONF: 100% Mine:4/4 Unrecov:0/0 Applied:4/4 Conflicts:0/0 Last:15/12/2012 03:02:53/OK
SCOTT.CONF2: 100% Mine:6/6 Unrecov:0/0 Applied:6/6 Conflicts:0/0 Last:15/12/2012 03:02:53/OK
--------------------------------------------------------------------------------------------------------------------------------------------
2 tables listed.

LIST STATS

Display statistics for number of rows processed/minute and/or lag between MINE and APPLY. The lag can be displayed in terms of time or SCN difference; the number of rows per minute can be shown globally or for specified table.
By default, the number of rows processed/minute represents APPLY performance; use LIST STATS TOTAL MINE to see MINE statistics.

dbvrep> list stats total
APPLY: Cumulative totals for all tables:
*** Total statistics since 15.12.2012 02:26:15 (last 24 hours) ***
Total inserts/minute: 659.20
Total updates/minute: 5.99
Total deletes/minute: 0.00
Total operations/minute: 665.19
Total commits/minute: 18.64
Total rollbacks/minute: 18.64
*** Total statistics since 15.12.2012 03:57:13 (last 1 hour) ***
Total inserts/minute: 0.08
Total updates/minute: 0.08
Total deletes/minute: 0.00
Total operations/minute: 0.16
Total commits/minute: 22.13
Total rollbacks/minute: 22.13
*** Total statistics since 15.12.2012 04:53:15 (last 5 minutes) ***
Total inserts/minute: 0.00
Total updates/minute: 0.00
Total deletes/minute: 0.00
Total operations/minute: 0.00
Total commits/minute: 24.50
Total rollbacks/minute: 24.50
*** Total statistics since 15.12.2012 02:26:15 (since last started) ***
Total inserts/minute: 659.20
Total updates/minute: 5.99
Total deletes/minute: 0.00
Total operations/minute: 665.19
Total commits/minute: 18.64
Total rollbacks/minute: 18.64
*** Total statistics since 15.12.2012 02:26:15 (whole history) ***
Total inserts/minute: 659.20
Total updates/minute: 5.99
Total deletes/minute: 0.00
Total operations/minute: 665.19
Total commits/minute: 18.64
Total rollbacks/minute: 18.64

PREPARE

This adds tables or schemas to the replication. Prepares a schema/table for replication and declares that their content is in sync as of now. If a schema is prepared and DDL replication is enabled, new tables created in this schema in future will be also prepared and replicated.

Create a new schema on both Source and Target database.

SQL> conn sys/oracle@src as sysdba
Connected.
SQL> create user new_schema identified by new_schema;
User created.
SQL> grant connect, resource to new_schema;
Grant succeeded.
SQL> conn sys/oracle@trg as sysdba
Connected.
SQL> create user new_schema identified by new_schema;
User created.
SQL> grant connect, resource to new_schema;
Grant succeeded.

 

Prepare the schema:

dbvrep> prepare schema new_schema
Connecting to running mine [new_schema]: [Schema prepared (2 internal records).]

 

The PREPARE command enables DDL replication unless NODDL option is specified. Therefore a new table will be automatically prepared and replicated to the Target database:

SQL> conn new_schema/new_schema@src
Connected.
SQL> create table tab1 (i number primary key, a varchar2(5));
Table created.
SQL> insert into tab1 values (1, 'a');
1 row created.
SQL> commit;
Commit complete.
dbvrep> list progress
Progress of replication TESTSUITE1: total/this execution
------------------------------------------------------------------------------------------------------------------
NEW_SCHEMA.TAB1:	100%	Mine:1/1	Unrecov:0/0 Applied:1/1	 Conflicts:0/0	Last:18/12/2012 14:36:10/OK
------------------------------------------------------------------------------------------------------------------
1 tables listed.

It's not necessary to replicate the whole schema. Dbvisit Replicate can also replicate individual tables.

 

There are some prerequisites to preparing the table. The table needs to exist on both the source and target, appropriate privileges have to be given to the Dbvisit Replicate owner and historical data needs to be loaded to the target table. For details please see Manually Replicating new objects (adding new tables).

 

 

dbvrep> prepare table oe.promotions
Connecting to running apply [oe.promotions]: [Apply table added.]
Connecting to running mine [oe.promotions]: [Table prepared (4 internal records).]
Table oe.promotions instantiated at SCN 33550622
SQL> insert into oe.promotions values (5, 'test promo');
dbvrep> list progress
Progress of replication TESTSUITE1: total/this execution
--------------------------------------------------------------------------------------------------------------------------------------------
OE.PROMOTIONS: 100% Mine:1/1 Unrecov:0/0 Applied:1/1 Conflicts:0/0 Last:21/12/2012 02:57:51/OK
--------------------------------------------------------------------------------------------------------------------------------------------
1 tables listed.

UNPREPARE

Removes tables or schemas from the replication. Unprepares a schema/table for replication and declares that this object should no longer be replicated. 

dbvrep> unprepare table oe.promotions
dbvrep> unprepare schema new_schema
dbvrep>

LIST PREPARE

Shows a list of prepared tables and schemas.

Managing the settings

SET

Sets configuration variable in memory and DDC DB. This setting will be permanent. See memory_set for setting in memory only and which are not permanent.

dbvrep> set MINE.MINE_PLOG = /home/oracle/TESTSUITE1/mine/%S.%E
Variable MINE_PLOG set to /home/oracle/TESTSUITE1/mine/%S.%E for process MINE.

SHOW

With no parameter or with ALL, shows all configuration variables, as they are seen by current process. It does not reread DDC file nor DDC DB to update the settings.
With variable, shows variable value. (For * and also for all processes.)

dbvrep> show setup_script_path
MINE.SETUP_SCRIPT_PATH = /home/oracle/TESTSUITE1
FETCHER.SETUP_SCRIPT_PATH = /home/oracle/TESTSUITE1
*.SETUP_SCRIPT_PATH =
APPLY.SETUP_SCRIPT_PATH = /home/oracle/TESTSUITE1

HELP

Shows general help, help for specific command or help for a variable.

dbvrep> help list
LIST: Reports.
LIST MINE|APPLY REDOLOGS|PLOGS: Display status of plogs and redologs on mine/apply.
LIST PROGRESS [schema | PLSQL]: show table of current progress of mine/apply. This can be shown on-line in the status bar by setting DDC variable STATUS_BAR to 'LIST' or 'STATUS+LIST'; full list of PL/SQL replication is stored in DBRSAPPLY_DDL_HISTORY.
LIST PREPARE: show tables prepared for replication.
LIST OBSOLETE REDO [THREAD thread]: show which redo logs are no longer needed by mine.
LIST CONFLICT { id|CURRENT|LAST }: show information about conflict (current one, last one or by specified id).
LIST STATUS: show status bar text.
LIST STATS {ALL|TIME|SCN|TOTAL|TOTAL mine/apply | schema.table }: list statistics for all tables or specified table - number of operations per minute and/or process lags in seconds or SCNs.

2-way or One-to-many replication

CHOOSE REPLICATION

By default all commands in the Dbvisit Replicate console work with the default processes MINE and APPLY. The choose replication command is useful when working with 2-way or one-to-many replication where there are multiple processes such as MINE, APPLY, MINE1 and APPLY1.

 

The CHOOSE REPLICATION command selects all processes for the indicated replication (so both MINE and APPLY processes).

 

Example:

dbvrep> CHOOSE REPLICATION MINE1

The above command will choose the replication pair that is associated with MINE1. Typically this is MINE1->APPLY1.

 

The CHOOSE REPLICATION command is needed prior to issuing commands to list conflicts, resolve conflicts and set conflicts with the APPLY1 process.