RxJS provides several operators for handling errors in Observables. The two main operators for error handling are `catchError` and `retry`. 1. catchError: The `catchError` operator is used to catch errors that may occur in an Observable and handle them in a graceful way. It takes a function as an argument that returns another Observable or throws an error. If the function returns an Observable, the source Observable will be replaced with the returned Observable. If the function throws an error, the error will be propagated to the subscriber. Here is an example: 

import { of } from 'rxjs';
import { catchError } from 'rxjs/operators';

of(1, 2, 3).pipe(
  map(num => {
    if (num === 2) {
      throw new Error('Oops!');
    }
    return num;
  }),
  catchError(err => {
    console.error(err.message);
    return of(4, 5, 6);
  })
).subscribe(
  num => console.log(num),
  err => console.error(err),
  () => console.log('Complete')
);
In this example, the `map` operator throws an error when it encounters the number 2. The `catchError` operator catches the error and logs the error message to the console. It then replaces the source Observable with a new Observable that emits the numbers 4, 5, and 6. 2. retry: The `retry` operator is used to automatically retry an Observable when it encounters an error. It takes an optional argument that specifies the maximum number of retries. Here is an example: 


import { of } from 'rxjs';
import { map, retry } from 'rxjs/operators';

of(1, 2, 3).pipe(
  map(num => {
    if (num === 2) {
      throw new Error('Oops!');
    }
    return num;
  }),
  retry(2)
).subscribe(
  num => console.log(num),
  err => console.error(err),
  () => console.log('Complete')
);
In this example, the `map` operator throws an error when it encounters the number 2. The `retry` operator retries the Observable up to 2 times before propagating the error to the subscriber.