MongoDB: db.getLastError() method
db.getLastError
The db.getLastError() method is used to check and return the status of the last operation.
Syntax:
db.getLastError(>w>, >wtimeout>)
Parameters:
| Name | Description | Required / Optional |
Type |
|---|---|---|---|
| w | The write concern’s w value. | Optional | int or string |
| wtimeout | The time limit in milliseconds. | Optional | int |
Example: MongoDB: db.getLastError() method
The following example will display the error information on the previous write operation.
db.getLastError(2);
Output:
> db.getLastError(2);
2016-01-13T13:09:04.997+0530 getlasterror failed: {
"connectionId" : 1,
"n" : 0,
"badGLE" : {
"getlasterror" : 1,
"w" : 2
},
"ok" : 0,
"errmsg" : "cannot use 'w' > 1 when a host is not replicated",
"code" : 2
} at src/mongo/shell/db.js:533
Retrieve the restaurants data from here
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