While creating database in couchDB it shows
This database failed to load.
Not able to find any reason.
My couchDb is single node cluster DB
Related
Background
I have a NodeJS server powered by ExpressJS that fetches data from Oracle database. I manage the database with Oracle SQL Developer tool. There is a database called MCF01 created using Database Configuration Assistant with pluggable database also named MCF01.
I connect to it using SYSTEM and the admin password both inside Oracle SQL Developer tool and from my server:
Now I created a table named CM_ITM_ALL:
CREATE TABLE "SYS"."CM_ITM_ALL" ...
I can without a problem query inside CM_ITM_ALL from Oracle SQL Developer tool like so:
Problem
I cannot execute the same query SELECT ITM_NM FROM CM_ITM_ALL WHERE ITM_NUM='a800004' using my nodejs server. What is the problem here?
Here is the error message from the Oracle via my server:
[Error: ORA-00942: table or view does not exist] {
errorNum: 942,
offset: 19
}
Table does exist. Connection is not a problem as it is giving out the table does not exist error. Otherwise it would give out wrong credentials error.
What I tried
Appending SYS into the query: SELECT ITM_NM FROM SYS.CM_ITM_ALL WHERE ITM_NUM='a800004'
Quoting the table name inside the query to SELECT ITM_NM FROM 'SYS'.'CM_ITM_ALL' WHERE ITM_NUM='a800004'
Dev environment
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0
NodeJS v16.13.0
ExpressJs 4.17.2
node-oracledb 5.3.0
Oracle SQL Developer 21.4.2
Use-case: I am trying to write data from a nodejs process running locally (on a docker container) to my locally running postgres server (no docker container). The nodejs process is able to connect to the server (setting the address to host.docker.internal solved that problem) however, when I attempt a simple "SELECT * FROM contact LIMIT 1" query, this error is returned:
{"type":"postgres error","request":"SELECT * FROM contact",
"error":{
"name":"error","length":106,
"severity":"ERROR",
"code":"42P01",
"position":"15",
"file":"parse_relation.c",
"line":"1376",
"routine":"parserOpenTable"}}
The relation error suggests the table is not found-- I created this table using a postgres client (postico) and have been able to successfully query the table's contents with other pg clients as well
I see multiple posts are suggesting running the sequelize db:migrate command, but would this be the right solution here?
I did not create a model nor a migration, and created the table directly in the table. Is there something else I may be overlooking that is producing this error?
I was working in my express project and suddenly I got Database related error.
When I refreshed my mongoDB database it shows me an error related to DATA Destroyed.I was shocked .But I was having backup of my DB collections so I droped my database and did restore again but then also I got the same error after some .
When I tried to hit the API it works and fetch data.But in my mongo compass it shows null .
This happens me a lot in past two days.some times DB shows non of the data but when I tried to hit the API it works and fetch data some times & some times it shows error.
Is there any permanent solution for this?
Versions of packages I'm using :
mongoose: 5.6.1
Node : 1.18.10
Express: 4.16.3
In Fauxton, I've setup a replication rule from a CouchDB v1.7.1 database to a new CouchDB v2.3.0 database.
The source does not have any authentication configured. The target does. I've added the username and password to the Job Configuration.
It looks like the replication got stuck somewhere in the process. 283.8 KB (433 documents) are present in the new database. The source contains about 18.7 MB (7215 docs) of data.
When restarting the database, I'm always getting the following error:
[error] 2019-02-17T17:29:45.959000Z nonode#nohost <0.602.0> --------
throw:{unauthorized,<<"unauthorized to access or create database
http://my-website.com/target-database-name/">>}:
Replication 5b4ee9ddc57bcad01e549ce43f5e31bc+continuous failed to
start "https://my-website.com/source-database-name/ "
-> "http://my-website.com/target-database-name/ " doc
<<"shards/00000000-1fffffff/_replicator.1550593615">>:<<"1e498a86ba8e3349692cc1c51a00037a">>
stack:[{couch_replicator_api_wrap,db_open,4,[{file,"src/couch_replicator_api_wrap.erl"},{line,114}]},{couch_replicator_scheduler_job,init_state,1,[{file,"src/couch_replicator_scheduler_job.erl"},{line,584}]}]
I'm not sure what is going on here. From the logs I understand there's an authorization issue. But the database is already present (hence, it has been replicated partially already).
What does this error mean and how can it be resolved?
The reason for this error is that the CouchDB v2.3.0 instance was being re-initialized on reboot. It required me to fill-in the cluster configuration again.
Therefore, the replication could not continue until I had the configuration re-applied.
The issue with having to re-apply the cluster configuration has been solved in another SO question.
I already have my Solr configured and running in the port 8983. Initially i indexed all the data in the MongoDB using data import handler. But now I realized that for every update and new insertion to automatically index we need a Mongo connector . I followed these links: Mongo Connector and Usage-with-Solr.
I am getting struck at the point
python mongo_connector.py -m localhost:27017 -t http://localhost:8983/solr
It shows error
python: can't open file 'mongo_connector.py': [Errno 2] No such file or directory
how to integrate a collection named food with the mongodb collection testfood such that new insertions and update automatically reflects in solr.