Cramer’s week ahead: Falling oil could help stocks but Fed is the next big test

CNBC's Jim Cramer on Friday said falling oil prices helped revive the stock market, but warned that next week's Federal Reserve meeting could quickly change the outlook for investors.

"Thank heavens oil went down today," the " Mad Money " host said. "It changed everything."

Stocks rebounded Friday as oil prices retreated , helping the major averages recover some of their losses after four straight down sessions. The Dow Jones Industrial Average traded 509 points higher, or 0.98%, while the S&P 500 and Nasdaq Composite gained 0.86% and 0.96%, respectively.

Technology stocks helped lead the recovery, thanks to positive updates from Adobe and Oracle after the bell Thursday. Cramer said the reports breathed new life into beaten-down enterprise software and data center stocks, pointing to Dell , Vertiv , Cisco , Marvell , GE Vernova and Hewlett Packard Enterprise as potential beneficiaries. Cramer's Charitable Trust , the portfolio run by CNBC's Investing Club, owns shares of GE Vernova.

With few major earnings reports on tap, Cramer said next week's market action will largely hinge on oil prices and interest rates.

The first major variable is the war in Iran. Cramer said progress toward peace could send oil prices sharply lower, helping ease inflation and pressure on interest rates. But he warned renewed fighting could quickly reverse Friday's relief.

"If Iran decides to attack a carrier group with drone swarms, though, then oil will spike, interest rates fly up, and the stock market will get clobbered," he said.

Investors will also turn their attention to Salesforce's annual Dreamforce conference, which kicks off Monday in San Francisco. Cramer will interview CEO Marc Benioff on Wednesday and other executives at the event throughout the week.