ORA-01157 Recovery

Extract Oracle Data When ORA-01157 Blocks Startup

When Oracle cannot identify or lock a datafile, normal startup and export may be blocked. DBRECOVER can inspect DBF files directly and show whether table rows can still be exported.

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Common symptom

ORA-01157: cannot identify/lock data file 5
ORA-01110: data file 5: '/oracle/oradata/users01.dbf'
ORA-01116: error in opening database file
                

Before You Try Extraction

Preserve the available files first. If storage or filesystem issues caused the error, copy DBF files to stable storage before running recovery software.

Locate the missing or inaccessible datafile path from ORA-01110.
Check whether SYSTEM, SYSAUX, USERS, and application tablespace files exist.
Use copies of datafiles, not live production files.
Run the trial against the files that actually contain target tables.

Purchase After A Concrete Preview

The DBRECOVER license unlocks export. The trial should first show target schemas, table names, row counts, or sample records.

Confirm the exact Oracle DB_NAME before checkout.
Buy only when recoverable data is visible.
Use emergency support for unclear file sets or high-risk cases.
Use the 7-day refund form if the licensed export does not meet your needs.

Check The Affected DBF Files

Download the trial to see whether useful rows remain extractable after ORA-01157.

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