IBM Support

Oracle Rollback Segment Errors

Troubleshooting


Problem

Resolutions for the following errors: ORA-01547 failed to allocate extent of size x in tablespace y ORA-01555 snapshot too old ORA-01556 maximum number of extents exceeded ORA-01562 failed to extend rollback segment

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Historical Number

M01765

Document Information

Modified date:
18 September 2025

UID

swg21262109