Ora2Pg is a free tool used to migrate an Oracle database to a PostgreSQL compatible schema. It connects your Oracle database, scan it automatically and extracts its structure or data, it then generates SQL scripts that you can load into PostgreSQL.
I am using Ora2Pg v23.2 running inside a docker container. Image is docker.io/georgmoser/ora2pg:latest.
Ora2Pg is used for migrating data from a oracle table with about 27 million entries. Due to some difficulties with dates and times, i need to do the migration in steps of one month at a time, so i am using WHERE clauses.
The export/import runs like a charm, however, the progess bar does not show the "real" progress, but always shows percentages from the total number of rows in the table.
This is the output when the export/import job has finished:
[========================>] 1/1 tables (100.0%) end of scanning.
[> ] 1068511/27485030 rows (3.9%) Table LOGENTRY (455 recs/sec)
[> ] 1068511/27485030 total rows (3.9%) - (2347 sec., avg: 455 recs/sec).
[========================>] 27485030/27485030 rows (100.0%) on total estimated data (2347 sec., avg: 11710 recs/sec)
As you can see, there were just about 1 Million records processed, but the progress bar did not run up to 100%.
I know it is just a minor issue, but it would be nice to see the actual numbers to estimate how long the process will run.
This is expected, Ora2Pg base the row count on Oracle statistic during data export and of course it has no idea of the WHERE clause cardinality. Running a real row count is too much time expensive.
Hi!
I am using Ora2Pg v23.2 running inside a docker container. Image is docker.io/georgmoser/ora2pg:latest. Ora2Pg is used for migrating data from a oracle table with about 27 million entries. Due to some difficulties with dates and times, i need to do the migration in steps of one month at a time, so i am using WHERE clauses. The export/import runs like a charm, however, the progess bar does not show the "real" progress, but always shows percentages from the total number of rows in the table. This is the output when the export/import job has finished:
[========================>] 1/1 tables (100.0%) end of scanning. [> ] 1068511/27485030 rows (3.9%) Table LOGENTRY (455 recs/sec) [> ] 1068511/27485030 total rows (3.9%) - (2347 sec., avg: 455 recs/sec). [========================>] 27485030/27485030 rows (100.0%) on total estimated data (2347 sec., avg: 11710 recs/sec)
As you can see, there were just about 1 Million records processed, but the progress bar did not run up to 100%.
I know it is just a minor issue, but it would be nice to see the actual numbers to estimate how long the process will run.
Greetings