- prepare environment
# pyvenv3 ve-ora2pg# source ve-ora2pg/bin/activate# pip install -r requirements.txt
- usage
- example:
python ora2pg.py --replace-query \ "foo[select * from foo where bar='bar']" \ "foo2[select * from foo2 where bar='bar']" \ --use-copy \ -l foo,bar,example \ --log-file=/tmp/ora2pg.log \ pq:https://postgresql-connect-string oracle-connect-string
Use --processes and --use-copy parameters to speedup copying large amount of data. Processes means number of processes to decode data for PG, not number of parallel queries.
usage: ora2pg.py [-h] [--truncate-tables] [--disable-triggers]
[--batch-copy-rowcount BATCH_ROWCOUNT]
[--table-list TABLES_TO_COPY] [--use-copy]
[--log-file LOG_FILE] [--exclude-list EXCLUDE_LIST]
[--skip-count]
[--replace-query [REPLACE_QUERY [REPLACE_QUERY ...]]]
[--force] [--processes PROCESSES] [--fk-drop] [--cmp]
[--cmp-tab-list] [--seq-last-number-fix]
pg_uri ora_uri
positional arguments:
pg_uri PG connect string, pq:https://...
ora_uri ORA connect string
optional arguments:
-h, --help show this help message and exit
--truncate-tables, -z
truncate tables before copy
--disable-triggers, -t
disable triggers before copy
--batch-copy-rowcount BATCH_ROWCOUNT, -b BATCH_ROWCOUNT
number of rows to copy at once, default=6000
--table-list TABLES_TO_COPY, -l TABLES_TO_COPY
--use-copy use PG COPY command to copy data
--log-file LOG_FILE log file, default=ora2pg.log
--exclude-list EXCLUDE_LIST, -x EXCLUDE_LIST
Exclude table list (comma separated). Copy all tables
in schema excluding this list
--skip-count Do not perform counting rows before copy. Disables
progress bar.
--replace-query [REPLACE_QUERY [REPLACE_QUERY ...]]
replase query for table, format: table_name[select *
from table_name where cond=some_value]
--force Don't ack, just do
--processes PROCESSES
Number of processes to decode data to COPY in PG,
default=1
--fk-drop, -f Drop foreign keys in PG and exit
--cmp Count rows in PG & ORA DBs and exit
--cmp-tab-list Compare table list - user input and oracle user_tables
and exit
--seq-last-number-fix
Update sequences last numbers and exit
usage: gen_pg_tabs.py [-h] [-l OBJECT_LIST] [-v] [-p] [-f] [-t] [-i] [-s]
[-d DEST_DIR] [-m]
connect_string
positional arguments:
connect_string ORACLE connect string as for SQL Plus
optional arguments:
-h, --help show this help message and exit
-l OBJECT_LIST, --object-list OBJECT_LIST
object list to export, comma separate names
-v, --verbose
-p, --primary-keys add primary keys directives in to create table
definition
-f, --foreign-keys add foreign keys directives in to create table
definition
-t, --export-tables export tables
-i, --export-indexes export indexes
-s, --export-sequences
export sequences
-d DEST_DIR, --destination-dir DEST_DIR
save tables, indexes and etc in separate files under
DEST_DIR/1Tab, DEST_DIR/1Tind, ...
-m, --sequence-strart-last-number